WO2004101899A1 - Built-up type reinforced earth retaining wall for planting, and methods of constructing and repairing the same - Google Patents

Abstract

Disclosed herein is a built-up type reinforced earth retaining wall for planting. The built-up type reinforced earth retaining wall comprise a steel lattice frame constituting the front of the retaining wall and reinforcing materials connected to the lattice frame and buried under a banking portion such that the lattice frame can be supported with frictional resistance and passive resistance, wherein the lattice frame (10) assembled with vertical members (12) and horizontal steel flats (14) such that the horizontal steel flats (14) are sloped upward to an upper portion of the front of the vertical members (12), and each of the horizontal steel flats (14) is formed at opposite sides thereof with side connecting portions (15) and (15') having steps bent up and down, respectively, so that soil can be prevented from flowing out to the outside by a sloped attaching angel of the horizontal steel flats (14), vegetation is allowed between upper and lower horizontal steel flats (14) on a vertically established retaining wall, and so that partial repair of the retaining wall is easy when the lattice frame is damaged.

Description

BUILT-UP TYPE REINFORCED EARTH RETAINING WALL FOR

PLANTING, AND METHODS OF CONSTRUCTING AND REPAIRING THE

SAME

[Technical Field]

The present invention relates to a built-up type reinforced earth

retaining wall for planting, and methods of constructing and repairing the

retaining wall. More particularly, the present invention relates to an

economical, highly safe built-up type reinforced earth retaining wall for

planting, which comprises a steel lattice frame constituting the front of the

retaining wall and reinforcing materials connected to the lattice frame and

buried under a banking portion such that the lattice frame and the banking

portion are supported with frictional resistance and passive resistance,

wherein the lattice frame is enhanced in its structure so that soil is effectively

prevented from flowing out without providing additional non-woven fabrics or

a vegetation mat, vegetation is allowed on a vertically established retaining wall, a round shaped retaining wall is also established corresponding to the

topography of the retaining wall location, and so that partial repair and

reconstruction can be easily performed without digging out the reinforced

banking portion, and methods of constructing and repairing the retaining wall.

[Background Art] As a conventional technology in the art related to the present

invention, Japanese patent Laid-open publication No. (Hei)9-3287β1 is

shown in Fig. 20. In Fig. 20, a retaining wall of Japanese patent Laid-open

publication No. (Hei)9-328761 is provided with a steel lattice frame at the

front of the retaining wall and chains as reinforcing materials for a banking

portion. Specifically, the retaining wall comprises a lattice frame 4 in which

a plurality of vertical steel flats 4a and a plurality of horizontal steel rods 4b

cross each' other to have a lattice shape, a vegetation mat 5 attached to the

rear side of the lattice frame 4, and chain-shaped reinforcing materials 7

connected to the vertical steel flats 4a at regular intervals and buried in a

horizontally stretched state under the banking portion 6 at the rear side of the

lattice frame 4. Since the lattice shaped steel lattice frame 4 and the

vegetation mat of the retaining wall allow vegetation on the front of the

retaining wall and the front of the retaining wall is supported by frictional

resistance of the banking portion and the chain-shaped reinforcing materials

7, the retaining wall provides a base advantageous for fixing and raising a

plant on the front of the retaining wall, thereby providing an environmentally

friendly engineering structure for planting.

Meanwhile, Korean Utility Model Registration No. 232630, Korean

Patent Laid-open Publication Nos. 2002-68936 and 2003-11206 of Yong-Ma

Corporation in Korea provide technologies for solving some problems of

Japanese patent Laid-open publication No. (Hei)9-328761. According to Korean Utility Model Registration No. 232630, instead of the chain-shaped

reinforcing materials, Geogrid reinforcing materials are used for banking

portion, thereby ensuring economical construction and safety of the retaining

wall structure. According to Korean Patent Laid-open Publication No. 2002-

68936, when the vertical steel flats of the steel lattice frame constituting the

front of the retaining wall are connected up and down, the vertical steel flats

are connected by connection clips whose side portions are manufactured in a

separated state, thereby preventing displacement of connected portions of

the vertical steel flats. According to Korean Patent Laid-open Publication

No. 2003-11206, since the vertical steel flats of the invention are respectively

formed with vertically elongated slit holes such that a bolt for connecting the

vertical steel flats can pass there through, when the vertical steel flats of the

steel lattice frame constituting the front of the retaining wall are connected up

and down using the bolt to pass through the slit holes, downward movement

of the bolt connecting the vertical steel flats up and down inside clearances of

the slit holes forces the upper side vertical steel flat to move down, thereby preventing the connected portions of the vertical steel flat from being displaced or broken.

By these technologies, since constitution itself of the steel lattice

frame and the vegetation mat constituting the front of the retaining wall is remarkably lighter than concrete blocks or the retaining wall, not only are

easy conveyance and efficient construction in practice provided, but also a

highly environmentally friendly property, that conventional blocks or panel built-up type reinforced earth retaining wall cannot provide, is also provided.

Thus, application of these technologies is tending to increase.

However, there are some problems in the conventional technologies.

According to the conventional technologies, when establishing the steel

lattice frame, after the plurality of vertical steel flats 4a for vertical connection

and the plurality of horizontal steel rods 4b for horizontal connection are

primarily assembled in the lattice shape, a lattice-shaped steel net must be

secondarily provided at an adjacent rear part thereof. Further, in order to

prevent soil inside the retaining wall from flowing out to the outside through

the lattice frame, the vegetation mat must be provided inside the lattice

frame. Particularly, when destruction of the retaining wall occurs due to

decrepitude of the vegetation mat or other reasons after the construction,

the soil can flow out through the destructed portion of the lattice frame.

Further, when the lattice frame is vertically established, the banking portion

acting as a foundation for the vegetation is also formed vertically, so that the plants cannot regularly root in a vertically established banking portion,

thereby making it impossible to vertically grow the plants. Additionally,

when the retaining wall has a round shape, there is a need to provide an

additional lattice frame having horizontal steel rods, which are bent corresponding to the roundness of the retaining wall.

[Disclosure of the Invention] The present invention has been made to solve the above problems,

and it is an object of the present invention to provide an economical, highly

safe built-up type reinforced earth retaining wall for planting, which

comprises a steel lattice frame constituting the front of the retaining wall and

reinforcing materials connected to the lattice frame and buried under a

banking portion such that the lattice frame and the banking portion are

supported with frictional resistance and passive resistance, wherein the

lattice frame is enhanced in its structure, so that soil can be effectively

prevented from flowing out without additional non-woven fabrics or a

vegetation mat in the lattice frame, vegetation is allowed in a vertically

established retaining wall, a round shaped retaining wall can also be

established corresponding to the topography of the retaining wall location, a

protection wall or a soundproofing wall can be continuously established on

the retaining wall only with members for constructing the retaining wall

without additional separate members as well as without time delay, and so

that partial repair and reconstruction can be easily performed without

digging out the reinforced banking portion, and methods of constructing and

repairing the retaining wall.

It is another object of the present invention to provide a

environmentally friendly built-up type reinforced earth retaining wall for

planting, which includes a lattice frame having a large surface area per unit

area and a large vegetation area, so that street noise and environmental

pollutants can be effectively reduced. In accordance with one aspect of the present invention, the above

and other objects can be accomplished by the provision of a built-up type

retaining wall for planting, comprising a steel lattice frame constituting the

front of the retaining wall and reinforcing materials connected to the lattice

frame and buried under a banking portion such that the lattice frame can be

supported with frictional resistance and passive resistance, wherein the

lattice frame is assembled in a lattice shape with a plurality of vertical

members and a plurality of horizontal steel flats such that the horizontal

steel flats are sloped upward to an upper portion of the front of the vertical

members, thereby preventing soil from flowing out to the outside through

the lattice frame, each of the vertical members being formed with upper and

lower connecting portions at the upper and lower ends of the vertical

member, and each of the horizontal steel flats being formed at opposite

sides thereof with side connecting portions stepped up and down such that

when one of the horizontal steel flats is connected with adjacent horizontal steel flats, the horizontal steel flats form a straight line.

In accordance with another aspect of the present invention, there is provided a method of constructing a built-up type retaining wall for planting

having the above structure, comprising the steps of: a) forming a foundation

where the retaining wall is to be constructed; b) alternately establishing standard type lattice frames and B type (bottom or base type) lattice frames

with nuts and bolts such that the standard type and B type lattice frames are

continuously adjoined to each other in the horizontal direction to form a lower end of the retaining wall, followed by hardening soil at the rear of the

lattice frame in a state that the lattice frame is supported by temporary

supporters at the front or at the rear of the lattice frame in order to prevent

the lattice frame from falling down; c) connecting the reinforcing materials to

the reinforcing material connecting holes at a lower side of each piece of

the lattice frame with joints, followed by pulling the reinforcing materials with

a predetermined tension, pouring soil thereon again and hardening the soil;

and d) continuously repeating the step c) in a state that after placing a new

standard type lattice frame between the pieces of the lattice frame at the

lower end of the retaining wall and assembling the new standard type lattice

frame to the B-type lattice frame previously built up at a lower side of the

new standard type lattice frame, the new standard type lattice frame is

connected to the previously established standard type lattice frame at

opposite sides of the new standard type lattice frame using a temporary fixing clamp so as to prevent it from falling down.

In accordance with yet another aspect of the present invention,

there is provided a method of repairing the retaining wall established by the

above construction method, comprising the steps of: disconnecting bolts

and nuts fastened to the upper and lower connecting portions of the vertical members adjacent to the impaired pieces of the lattice frame; disconnecting joints at the leading ends of the reinforcing materials connected to the rear of the impaired pieces of the lattice frame; separating the impaired pieces of

the lattice frame by lifting the impaired pieces of the lattice frame from the retaining wall to the front thereof; reassembling new pieces of the lattice

frame to the separated portion of the lattice frame according to the reverse

sequence of the sequence of separating the lattice frame.

[Brief Description of the Drawings]

The above and other objects, features and other advantages of the

present invention will be more clearly understood from the following detailed

description taken in conjunction with the accompanying drawings, in which:

Fig. 1 is a perspective view of a lattice frame of a built-up type

reinforced earth retaining wall according to the present invention;

Fig. 2 is a side view of the lattice frame of Fig. 1 ;

Fig. 3 is a front perspective view illustrating the built-up type

reinforced earth retaining wall according to the present invention, which is in the process of construction;

Fig. 4 is a rear perspective view illustrating the built-up type

reinforced earth retaining wall according to the present invention, which is in

the process of construction;

Figs. 5 is a cross sectional views of the built-up type reinforced

earth retaining wall according to the present invention immediately after construction.

Fig. 6 shows the retaining wall on which plants are grown after construction of Fig. 5; Fig. 7 is a front perspective view illustrating a round shaped

retaining wall using the lattice frame according to the present invention;

Fig. 8 is an exploded view illustrating a connected state of side

connecting portions of the lattice frame of Fig. 7;

Fig. 9 is a perspective view of joints for reinforcing materials of a

built-up type reinforced earth retaining wall according to another

embodiment of the present invention;

Fig. 10 is a perspective view of a built-up type reinforced earth

retaining wall of the present invention after construction according to

another embodiment;

Fig. 11 is a cross sectional view of the retaining wall of Fig. 10;

Fig. 12 is a perspective view of a built-up type reinforced earth

retaining wall of the present invention after construction according to still

another embodiment;

Fig. 13 is a perspective view of a built-up type reinforced earth

retaining wall of the present invention after construction according to yet another embodiment;

Fig. 14 is a cross sectional view of the wall of Fig. 13; Fig. 15 is a cross sectional view of the retaining wall of the present

invention, which is applied to a cutting portion for planting on the cutting portion;

Fig. 16 is a front perspective view illustrating the retaining wall of

the present invention, which is in partial repairs; Fig. 17 is a perspective view of a lattice frame according to another

embodiment of the present invention;

Fig. 18 is a cross sectional view of the lattice frame of Fig. 17;

Fig. 19 is a cross sectional view of a connected state of upper and

lower pieces of the lattice frame of Fig. 17; and

Fig. 20 is a cross sectional view of a conventional retaining wall.

[Best Mode for Carrying Out the Invention]

Preferred embodiments will now be described in detail with

reference to the accompanying drawings.

Fig. 1 is a perspective view of a lattice frame of a built-up type

reinforced earth retaining wall according to the present invention. Fig. 2 is

a side view of the lattice frame of Fig. 1. Figs. 3 and 4 are front and rear

perspective views illustrating the built-up type reinforced earth retaining wall

of the present invention, which is in the process of construction,

respectively. Figs. 5 and 6 are cross sectional views of the retaining wall of the present invention after construction.

As shown in Figs. 1 to 6, the present invention provides a built-up

type retaining wall for planting, which is established with a steel lattice frame 10 constituting the front of the retaining wall and reinforcing materials

20 connected to the lattice frame 10 and buried under a banking portion 30

such that the lattice frame 10 and the banking portion 30 can be supported with frictional resistance and passive resistance, wherein the lattice frame

10 is assembled in a lattice shape with a plurality of vertical members 12

and a plurality of horizontal steel flats 14. The horizontal steel flats 14 are

assembled with the vertical members 12 to form the lattice frame 10 such

that the horizontal steel flats 14 are sloped upward to an upper portion of

the front of the vertical members 12, thereby preventing soil in the banking

portion 30 from flowing out to the outside through the lattice frame 10.

Each of the vertical members 12 is formed with upper and lower connecting

portions 13 and 13' at the upper and lower ends of the vertical member 12.

Each of the connecting portions 13 and 13' is formed of elongated holes to

be connected with a foundation D or with the lower end of the vertical

member of the other pieces of the lattice frame to be established on the present lattice frame. Each of the horizontal steel flats 14 is formed with

side connecting portions 15 and 15' at opposite sides of the horizontal steel

flats 14. Each of the side connecting portions 15 and 15' is stepped up

and down such that when one of the horizontal steel flats 14 is connected

with the adjacent horizontal steel flat, the horizontal steel flats 14 form a straight line.

The upper and lower connecting portions 13 and 13' are adapted such that after they are assembled with typical nuts and bolts, the upper and lower connecting portions 13 and 13' can adjust and fix the horizontal

positioning of the lattice frame. At this point, the nuts and bolts are

fastened to the upper and lower connecting portions 13 and 13' such that the vertical members can vertically slide in the lattice frame.

The side connecting portions 15 and 15' are bent up and down to

provide a stepped shape, respectively. Thus, when establishing a rounded

retaining wall as shown in Fig. 7 as well as the straight retaining wall as

shown in Figs. 1 to 6, the stepped shapes of the side connecting portions

15 and 15' enable the rounded retaining wall to be assembled in a bent

state without generating interference between the horizontal steel flats 14 of

the adjacent pieces of the lattice frame 10 below a certain angle of the

round, thereby forming a naturally rounded retaining wall corresponding to

construction field. Additionally, as shown in Fig. 8, when unequal sinking

of the banking portion or the ground causes one side of the lattice frame to

sink, the side connecting portions 15 and 15' between the pieces of the

lattice frame are coupled by the nuts and bolts in a separated state of the upper and lower steps of the side connecting portions 15 and 15', so that

displacement caused by the sinking can be absorbed by up and down sliding movement of the side connecting portions 15 and 15'. Thus, the

other side of the lattice frame is not sunk, preventing deformation of the

retaining wall due to distortion or displacement.

Each of the vertical members 12 of the lattice frame 10 is perforated

at regular intervals with vertically elongated reinforcing material connecting holes 16. As shown in Fig. 4, a pair of joints 17 are fixed at the leading ends

to each of the reinforcing material connecting holes 16 by the bolts and fitted

at their distal ends with a connecting pin 18, so that the reinforcing materials made of synthetic fabrics can be connected to the reinforcing material

connecting holes 16 at the leading end of the reinforcing materials.

When galvanized steel sheet reinforcing materials are used, joints

17' as shown in Fig. 9 can be used. In addition to the galvanized steel sheet

reinforcing materials, as for the reinforcing material applicable to the

construction of the retaining wall for planting of the present invention, any

kind of reinforcing material, such as band shaped synthetic fabrics, Geogrid,

chain or the like, currently available in practice for the built-up type reinforced

earth retaining wall, can be used. At this point, the joints for connecting the

leading end of each reinforcing material to the lattice frame can be adapted

to correspond thereto.

Meanwhile, since the reinforcing material connecting holes 16 formed

at the vertical members 12 are vertically elongated holes, when any one of

the reinforcing materials 20 is sunk due to sinking of the banking portion or

the ground, the joints 17 and 17' are also sunk along the reinforcing material

connecting holes 16. Thus, in case of the displacement of the banking portion or the sinking of the ground, the lattice frame is prevented from being distorted.

The lattice frame 10 of the present invention is typically made of steel flat, and preferably, in order to avoid corrosion after the construction, the

lattice frame is plated with synthetic resin or galvanized on its surface to extend its life span.

In order to construct the retaining wall of the present invention, first, excavation work is carried out where the retaining wall is to be constructed.

A separate concrete foundation D can be formed on the place after the

excavation work. If the concrete foundation D is provided thereon, the

pieces of the lattice frame are sequentially assembled on the concrete

foundation D. If the concrete foundation D is not provided thereon, the

lattice frame of the present invention is horizontally laid on the ground to

provide a foundation, and the pieces of the lattice frame are assembled using

the nuts and bolts on this foundation of the lattice frame. At this point, as

shown in Figs. 3 and 4, the lattice frame assembled with eight horizontal

steel flats (also referred to as "standard type lattice frame" in the drawings)

and the lattice frame assembled with four horizontal steel flats (also referred

to as "B type lattice frame" in the drawings) are alternately established on the

lower end of the retaining wall such that the standard type and B type lattice

frames are continuously adjoined to each other in the horizontal direction.

Then, in order to prevent the lattice frame from falling down, with the lattice

frame supported by temporary supporters at the front and rear of the lattice

frame, soil is poured at the rear of the lattice frame and hardened. On the

hardened soil, the reinforcing materials 20 are connected to the reinforcing material connecting holes 16 at the lower side of the lattice frame by the

joints 17, and are pulled with a predetermined tension. Then, the soil is poured thereon again and hardened.

After the lattice frame of the lower end of the retaining wall is

established, other standard type lattice frame is placed between the pieces of the lattice frames of the lower end. At this point, assembled to the B-type

lattice frame previously built up at the lower side, the standard type lattice

frame is connected to the previously settled standard type lattice frame at

both sides of the newly provided standard type lattice frame by a temporary

fixing clamp so as to prevent it from falling down. Then, like the process for

establishing the lattice frame of the lower end, the processes of connecting

the reinforcing materials and hardening the soil are repeated, so that the

retaining wall can be established to a desired height. At the top of the

retaining wall, a new B-type lattice frame is established such that adjacent

pieces of the lattice frames have the same height, thereby completing the

construction of the retaining wall.

Figs. 2, 5 and 6 most clearly show characteristics of the lattice

frames according to the present invention, wherein the horizontal steel flats

14 are horizontally assembled with the vertical members 12 such that the

horizontal steel flats 14 are sloped upward to the front upper portion of the vertical members 12. Further, the horizontal steel flats 14 are attached to

the vertical members 12 such that an angle formed between the lower end of an upper horizontal steel flat 14 and the upper end of a lower horizontal steel

flats 14 at a piece of the lattice frame is smaller (typically 45° or less) than a

repose angle of the soils constituting the banking portion 30. The angle can

be adjusted to be smaller than the repose angle of the soils by reducing gaps

between the horizontal steel flats 14. With these characteristics of the

retaining wall of the present invention, the soil at the rear of the lattice frame is prevented from flowing out to the front of the lattice frame 10 during or after

the banking process, so that additional net, non-woven fabrics or a

vegetation mat for preventing the soil from flowing out are not required.

The soil is exposed with a slow slope toward the outside at the front

of the lattice frame 10 in the gaps between the lower end of the upper

horizontal steel flat and the upper end of the lower horizontal steel flat

constituting the lattice frame 10 of the present invention. Thus, as shown in

Fig. 5, when these portions, that is, vegetation culture soil 32 is planted with

many kinds of plants or seeds, moisture contained in the banking portion 30

and rainwater induced from the front of the lattice frame 10 assist plant

growth, and as time passes after the construction of the retaining wall, as

shown in Fig. 6, grass is grown, so that the lattice frame 10 constituting the

front side of the retaining wall is planted with the grown grasses P, thereby

forming a environmentally friendly retaining wall.

Further, according to the present invention, when the retaining wall is vertically established, since the soil is exposed with the slow slope toward the outside at the front of the lattice frame 10 in the gaps between the horizontal steel flats 14 constituting the lattice frame, there is provided a high survival

rate of the plant, that is, the plants can safely root in the banking portion and

grow, so that as time passes after the construction of the retaining wall, the environmentally friendly, planted retaining wall can be naturally maintained.

Further, when an excessive amount of moisture flows into the banking portion 30 through the space formed between the horizontal steel flats, the retaining wall of the present invention enables the moisture to flow

out to the outside without additional drainage facilities. Additionally, the

planted spaces can be used for habitats of small birds.

Fig. 10 is a perspective view of a built-up type reinforced earth

retaining wall of the present invention after construction according to another

embodiment, and Fig. 11 is a cross sectional view of the retaining wall of Fig.

10.

In this embodiment, a slope plane is reinforced by the lattice frame

connected to an upper portion of a retaining wall vertically established with

the lattice frame of the present invention. When constructing a slope plane

retaining wall for reinforcing the slope plane on the retaining wall, with the

lattice frame 10 for reinforcing the slope plane laid on the slope plane, the

lower connecting portions 13' of the lattice frame 10 for reinforcing the slope

plane are connected to the upper connecting portions 13 of the lattice frame

10 for the vertically established retaining wall with the nuts and bolts (not shown), so that when the slope plane is formed on the upper end of the

retaining wall, the soil of the slope plane can be prevented from flowing out

and the vegetation on the slope plane as well as on the retaining wall is

allowed. Fig. 12 is a perspective view of a built-up type reinforced earth

retaining wall of the present invention after construction according to still

another embodiment. In this embodiment, a wall F for protection or

soundproofing is extended on the upper portion of a retaining wall W. According to the present embodiment, after a lattice frame 10 for establishing

the wall is continuously built up on the lattice frame 10 constituting the end

portion of the banking portion 30 and at the rear side of the wall F, the lattice

frame 10 exposed at an upper portion of the banking portion 30 is

surrounded by shape steels 40 to provide a frame of the wall F. In this

state, the frame of the wall F is filled with soil and hardened, thereby

providing an environmentally friendly wall F along with the retaining wall W.

In this embodiment, after one lattice frame 10 is horizontally buried

as a foundation of the wall F inside the banking portion 30, the other lattice

frame 10 forming front and rear pieces of the frame of the wall F is

assembled thereto, so that the environmentally friendly wall F can be easily

established in the job field without using additional expensive materials.

Fig. 13 is a perspective view of a built-up type reinforced earth

retaining wall of the present invention after construction according to yet

another embodiment, and Fig. 14 is a cross sectional view of the wall of Fig.

13. In this embodiment, a wall is established using the lattice frame of the

present invention. According to this embodiment, after digging out the

ground where the wall is to be established, one lattice frame 10 is

horizontally buried to provide a foundation, and the other lattice frame 10

forming the front and rear sides of the wall is built up on this foundation of the

lattice frame 10. After the built up lattice frame is surrounded by shape

steels 40 to provide a frame of the wall, the frame of the wall is filled with soil

and hardened, thereby providing an environmentally friendly wall. Fig. 15 is a cross sectional view of a retaining wall of the present

invention, which is applied to a cutting portion for planting on the cutting

portion. In this embodiment, the lattice frame of the present invention can

be used not only as the construction material for the wall, but also as the

construction material for the reinforcing materials buried in the banking

portion 30. In the lattice frame 10 used as the reinforcing material, the

horizontal steel flats 14 act as an anchor, providing a very large passive

resistance force. Thus, even in case that the banking portion 30 has a small

distance between the front and rear section thereof, the retaining wall having

a secure structure can be constructed.

Fig. 16 shows a built-up type reinforcing earth retaining wall of the

present invention, which is in partial repairs. When replacing partially

impaired or deformed pieces of the lattice frame of the retaining wall with new

pieces of the lattice frame, first, the bolts and nuts fastened to the upper and

lower connecting portions 13 and 13' of the vertical members 12 adjacent to the impaired pieces of the lattice frame are disconnected, and the joints 17 at the leading ends of the reinforcing materials (not shown; 20) connected to the

rear of the impaired pieces of the lattice frame are released from the vertical

members. Then, the impaired pieces of the lattice frame 10 are obliquely

lifted from the retaining wall to the front thereof by crane or other equipment,

so that the impaired pieces of the lattice frame can be easily separated without digging out the reinforced banking portion. When attaching new

pieces of the lattice frame to the separated portion of the lattice frame, the new pieces of the lattice frame are attached thereto according to the reverse

sequence of the sequence of separating the lattice frame. Thus, the

retaining wall of the present invention enables easy repair of the impaired

lattice frame without digging out the banking portion. Further, after replacing

the impaired pieces of the lattice frame with the new pieces, the banking

portion can be filled with the soil through gaps between the pieces of the

lattice frame, so that after the repairs, not only can the lattice frame exhibit its

own functions, but also no trace of the lattice frame repair is exposed.

Figs. 17 to 19 show a lattice frame according to another embodiment

of the present invention. Compared with the lattice frame shown in Fig. 1,

the lattice frame of the embodiment is the same as the lattice frame shown in

Fig. 1 in that a plurality of horizontal steel flats 14 are assembled with a

plurality of vertical members 12 such that the horizontal steel flats 14 are

sloped upward to the upper portion of the front of the vertical members 12.

There are differences between them in that the vertical members 12 are

made of metal pipe, and that the vertical members 12 are formed at the upper and lower ends thereof with upper and lower connecting portions 13

and 13' for connecting adjacent upper and lower lattice frames to each other

in a fitting manner.

According to the present embodiment, although the upper and lower connecting portions 13 and 13' of the lattice frame 10 are integrated with the

metal pipe of the vertical members 12, without being limited to this structure,

separate sleeve members can be used for connecting the vertical members 12 in the present invention.

[Industrial Applicability!

As apparent from the above description, according to the present

invention, the built-up type reinforced earth retaining wall for planting of the

present invention uses the steel lattice frame constituting the front of the

retaining wall and the reinforcing materials connected to the lattice frame and

buried under the banking portion such that the lattice frame and the banking

portion are supported with frictional resistance and passive resistance,

wherein the lattice frame is assembled in a lattice shape such that the

horizontal steel flats are sloped upward to an upper portion of the front of the

vertical members, so that soil can be effectively prevented from flowing out

and so that the vegetation is allowed on the vertically established retaining

wall. Further, each of the vertical members and horizontal steel flats is

formed with the connecting portions at the upper end of the vertical member

and at opposite sides of the horizontal steel flat such that when being

connected to the adjacent pieces of the lattice frame, the lattice frame can be

assembled in the straight shape or in the round shape, so that vegetation can

be allowed on the establishment of the vertically established retaining wall

and so that the round shaped retaining wall can also be established

corresponding to the topography of the retaining wall location. Further, the

soil can be effectively prevented from flowing out without the additional non- woven fabrics or the vegetation mat of the conventional lattice frame, and

partial repair and reconstruction can be easily performed without digging out

the reinforcing banking portion. Additionally, not only can the protection wall

or the soundproofing wall be continuously constructed on the retaining wall,

but the slope place can also be reinforced at the same time. Further, the

large surface area per unit area of the lattice frame provides a large

vegetation area, so that street noise and environmental pollutants can be

effectively reduced. Thus, according to the present invention, an

economical, highly safe built-up type reinforced earth retaining wall for

planting is provided.

It should be understood that the embodiments and the accompanying

drawings as described above have been described for illustrative purposes

and the present invention is limited by the following claims. Further, those

skilled in the art will appreciate that various modifications, additions and substitutions are allowed without departing from the scope and spirit of the

invention as set forth in the accompanying claims.

Claims

1. A built-up type retaining wall for planting, comprising a steel

lattice frame constituting the front of the retaining wall and reinforcing

materials connected to the lattice frame and buried under a banking portion

such that the lattice frame can be supported with frictional resistance and

passive resistance,

wherein the lattice frame is assembled in a lattice shape with a

plurality of vertical members 12 and a plurality of horizontal steel flats 14

such that the horizontal steel flats 14 are sloped upward to an upper portion

of the front of the vertical members 12, and soil in the banking portion 30 is

prevented from flowing out to the outside through the lattice frame 10.

2. The retaining wall as set forth in claim 1, wherein each of the

vertical members 12 is formed at upper and lower ends thereof with upper

and lower connecting portions 13 and 13' to be connected with a foundation

or with a lower end of the other vertical member to be connected with the lattice frame, respectively, and each of the horizontal steel flats 14 is formed

at opposite sides thereof with side connecting portions 15 and 15' stepped up and down such that when one of the horizontal steel flats is connected

with adjacent horizontal steel fiats, the horizontal steel flats are assembled

in a straight line.

3. The retaining wall as set forth in claim 1 , wherein each of the

vertical members 12 is perforated at regular intervals with vertically

elongated reinforcing material connecting holes 16, and is provided with a

pair of joints 17 fixed at their leading ends to each of the reinforcing material

connecting holes 16 by bolts while being fitted at their distal ends with a

connecting pin 18 such that each of reinforcing materials 20 made of

synthetic fabrics can be connected to the reinforcing material connecting

holes 16 at the leading end of the reinforcing material.

4. The retaining wall as set forth in claim 1, wherein the lattice frame

10 is used as the reinforcing materials 20.

5. The retaining wall as set forth in claim 1, wherein the vertical

members 12 are made of metal pipe, and each of the metal pipe vertical

members 12 is formed at the upper and lower ends thereof with upper and

lower connecting portions 13 and 13' for allowing adjacent upper and lower

pieces of the lattice frame 10 to be connected to each other by a fitting manner.

6. The retaining wall as set forth in claim 2, wherein the retaining wall is further formed at an upper portion thereof with a slope plane

retaining wall connected to the retaining wall by the lattice frame, and the

upper and lower connecting portions 13 and 13' of the lattice frame are connected with the lattice frame 10 constituting the upper end of the

retaining wall and with the other lattice frame for reinforcing the slope plane

by bolts and nuts, in a state that the lattice frame for reinforcing the slope

plane is laid on the slope plane.

7. The retaining wall as set forth in claim 1 , wherein the retaining

wall is formed with a protection wall or a soundproofing wall, such that the

protection wall or the soundproofing wall is extended from the retaining wall

and provided with a frame constituted by the lattice frame 10 and shape

steel 40.

8. A method of constructing a built-up type retaining wall for planting

as set forth in claims 1 to 7, comprising the steps of:

a) forming a foundation where the retaining wall is to be constructed;

b) establishing standard type lattice frames and B type lattice

frames with nuts and bolts such that the standard type and B type lattice

frames are continuously adjoined to each other in the horizontal direction to form a lower end of the retaining wall, followed by hardening soil at the rear of the lattice frame in a state that the lattice frame is supported by

temporary supporters at the front or at the rear of the lattice frame in order

to prevent the lattice frame from falling down;

c) connecting the reinforcing materials to the reinforcing material connecting holes at a lower side of each piece of the lattice frame with

joints, followed by pulling the reinforcing materials with a predetermined

tension, pouring soil thereon again and hardening the soil; and

d) continuously repeating the step c) in a state that after placing a

new standard type lattice frame between the pieces of the lattice frame at

the lower end of the retaining wall and assembling the new standard type

lattice frame to the B-type lattice frame previously built up at a lower side of

the new standard type lattice frame, the new standard type lattice frame is

connected to the previously established standard type lattice frame at

opposite sides of the new standard type lattice frame using a temporary

fixing clamp so as to prevent it from failing down.

9. The retaining wall as set forth in claim 8, wherein in the step a),

the lattice frame is horizontally laid on the ground to provide the foundation,

the lattice frame forming the lower end of the retaining wall is established on

the foundation of the lattice frame using bolts and nuts.

10. A method of repairing a built-up type retaining wall for planting

constructed by the method as set forth in claim 8 or 9, comprising the steps

of:

disconnecting bolts and nuts fastened to the upper and lower

connecting portions of the vertical members adjacent to impaired pieces of

the lattice frame; disconnecting joints at the leading ends of the reinforcing materials

connected to the rear of the impaired pieces of the lattice frame;

separating the impaired pieces of the lattice frame by lifting the

impaired pieces of the lattice frame from the retaining wall to the front thereof; and

reassembling new pieces of the lattice frame to the separated

portion of the lattice frame according to the reverse sequence of the

sequence of separating the lattice frame.