JP4630809B2 - Steel L retaining wall and its construction method - Google Patents

Description

  The present invention is applied to road retaining walls in mountainous areas and the like, reinforcing retaining walls in constructed land, and the like, and particularly relates to a steel L-shaped retaining wall having excellent workability, high structural stability, and low cost.

Conventionally, a retaining wall constructed of concrete or a retaining wall using concrete as a wall surface material is known (see Patent Document 1). And as a thing other than a concrete reinforcement retaining wall, the retaining wall which constructs a wall surface material using an expanded metal is known (refer patent document 2).
Japanese Patent Laid-Open No. 11-256580 (first page, FIG. 1) JP 08-284173 A (first page, FIG. 1)

  A soil retaining wall using concrete as a conventional wall material is known. However, there is a problem that concrete is not preferable because it is expensive and damages the natural landscape.

  In addition, there are many places where reinforced retaining walls are constructed, such as mountainous areas, remote areas, or hilly areas, which are inconvenient for transporting and constructing materials. However, the retaining wall using the material has a problem that the material weight is heavy, it takes time and effort to transport, heavy equipment is necessary and the construction work is difficult, and the construction period is long due to the curing period. In addition, there is a problem that in a place where the foundation ground is not good, a collapse or a crack is likely to occur.

  The present invention aims to realize a soil retaining wall that does not cause the above-described problems of the prior art, as a substitute for a concrete block or the like that can be constructed in a mountainous area or a narrow area such as an urban area, It is an object to realize a steel L-type retaining wall that can be safely and easily constructed in a short process and that does not require heavy materials and that does not require heavy machinery and its construction method. To do.

  In order to solve the above-mentioned problem, the present invention is configured such that a plurality of L-type support members are independently arranged at appropriate intervals in the width direction in which the retaining wall is formed, and the front surfaces of the plurality of L-type support members are provided. A steel L-type retaining wall having a wall surface disposed on the side and a banking formed on the back side of the wall surface material, wherein the plurality of L-type struts respectively include a bottom beam member and the bottom beam. A bottom front girder material and a rear anchor beam material attached at positions before and after the material, a vertical strut material fixed to extend upward at a front end of the bottom beam material, the bottom beam material and the vertical strut material, In each of the plurality of L-shaped struts, the bottom beam material, the bottom front end girder material, and the back anchor beam material are entirely composed of the three members. Provided is a steel L-shaped retaining wall which is arranged and fixed so as to be a plane I type.

  The vertical strut member has a U-shaped cross section folded back at the front side, and is a U-shaped steel having a plurality of slits formed at intervals in the longitudinal direction at the front side folded portion. A connecting rod is inserted into the U-shaped steel in a state where the mesh portion of the wall surface material is inserted into the plurality of slits and the wall surface material is in contact with the vertical strut material, and the wall surface material is It is preferable to adopt a configuration in which it is attached to a support material.

  The vertical strut material is a U-shaped steel or an angle steel with a cross-section, and welds one surface of the hexagon outer surface of a plurality of hexagon nuts to the front portion thereof at intervals in the longitudinal direction so that the holes of the hexagon nuts are in the vertical direction. The wall material is a mesh member, and the plurality of hexagon nuts are placed in the mesh of the wall material and the wall material is in contact with the vertical strut material. It is preferable that the connecting rod is inserted into the hole and the wall surface member is attached to the vertical support member.

  The vertical strut material is a pair of U-shaped steels in cross section, the wall surface material is composed of a plurality of thinned materials, a pair of washers having hooks is fixed to the thinned materials, and the thinned materials are It is preferable that the pair of washer hooks are engaged with the pair of U-shaped steels in cross section and the wall surface member is attached to the vertical support member.

  It is good also as a steel L type | mold retaining wall which provides the said several L type | mold support | pillar body, wall surface material, and embankment in multiple steps in the up-down direction.

  In order to solve the above-mentioned problems, the present invention includes a step of forming an L-shaped column body, placing an appropriate interval in the width direction in which the retaining wall is formed, and independently arranging the plurality of L-shaped column bodies. A method for constructing a steel L-type retaining wall comprising a step of attaching a wall surface material to the front surface side of the plurality of L-shaped struts and a step of forming embankment on the back surface side of the wall surface material, In the step of forming the columnar body, it is fixed so as to extend upward at the front end of the bottom beam member, and the bottom front end girder member and the rear anchor beam member are formed as a whole by the three members before and after the vertical column member bottom beam member. Provided is a method for constructing a steel L-shaped retaining wall, which is fixed so as to have a plane I shape, and then a diagonal tie material is installed between the bottom beam member and the vertical support member.

  In the construction method of the steel L-type retaining wall, the step of independently arranging the plurality of L-type support members, the step of attaching a wall material to the front side of the plurality of L-type support members, and the back surface of the wall material A series of steps including a step of forming the embankment on the side may be repeated a plurality of times upward to construct a retaining wall having a plurality of steps of embankment.

  According to the steel L-shaped retaining wall and the construction method thereof according to the present invention having the above-described configuration, the following effects are produced. That is, the steel L-type retaining wall according to the present invention assembles individual L-type struts (planar I-type one after another) without connecting a plurality of L-type struts to each other with a girder member or a beam member. Since the wall material is disposed on the front surface of the plurality of L-shaped support members independently of each other in the width direction of the retaining wall, the mountainous area or the reverse can be obtained without the need for heavy members or heavy machinery. Even in a small area of an urban area, it can be easily and safely constructed in a short construction period without difficulty in transportation and construction.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out a steel L-type retaining wall and its construction method according to the present invention will be described based on examples with reference to the drawings.

  In the steel L-type retaining wall according to the present invention, a plurality of L-type supporting columns are arranged at appropriate intervals in the width direction in which the retaining wall is formed, and the front side of the plurality of L-shaped supporting columns is arranged. Further, the present invention is characterized in that a wall structure is arranged in the width direction to construct a strength structure, and embankment is formed on the back side of the wall surface of the strength structure.

  Each L-shaped support body includes a bottom beam member, a bottom front end beam member and a rear anchor beam member provided before and after the bottom beam member, and a vertical column fixed to the front end of the bottom beam member so as to extend upward. And a slant tie material installed between the bottom beam material and the vertical support material. In each of the plurality of L-type struts, the bottom beam member, the bottom front end beam member, and the rear anchor beam member are arranged so as to form a planar I shape as a whole with these three members.

  According to such a structure of the steel L-type retaining wall according to the present invention, the strength structure is formed by independently assembling a plurality of L-type support columns without mutually connecting them. All you need to do is place it.

  In short, unlike the conventional reinforcing retaining wall, it is not necessary to connect a plurality of L-type support bodies to their bottom beams and / or vertical support members. Therefore, there is no need for a longitudinal beam member in the width direction, and there is no need for a coupling step, thereby reducing costs and steps.

  FIG. 1 is a view showing a strength structure (structure obtained by removing embankment from a steel L-shaped retaining wall) of Example 1 of a steel L-shaped retaining wall according to the present invention. The strength structure 2 of the steel L-shaped retaining wall 1 includes a plurality of L-shaped column bodies 3 arranged at appropriate intervals in the width direction in which the retaining wall is formed. The wall surface material 4 is disposed in the width direction on the front surface side of 3. The L-type column body 3 includes a bottom beam member 5, a bottom front end beam member 6, a rear anchor beam member 7, a vertical column member 9, and a diagonal tie member 10.

  FIG. 2 shows a configuration of the L-shaped support body 3, and FIG. 3 shows a front view and a plan view of the strength structure 2. As shown in FIG. 2A, angle steel is used for the bottom beam member 5, the bottom front end beam member 6, and the rear anchor beam member 7, respectively. In each of the plurality of L-shaped struts, the bottom beam member 5, the bottom front end beam member 6, and the rear anchor beam member 7 are generally planar I-shaped by these three members as shown in FIG. It is arranged to become.

  As shown in FIG. 2 (b), the vertical strut member 9 has a U-shaped cross-section folded back at the front side, and a plurality of slits 11 are formed at intervals in the longitudinal direction at the front-side folded portion. U-shaped steel. As shown in FIG. 2A, the slant tie material 10 is obtained by fixing attachment pieces 13 to both ends of the turnbuckle 12.

  The bottom beam member 5 and the back anchor beam member 7 are fastened to each other with bolts and nuts. As shown in FIGS. 2 (c) and 2 (d), a vertical strut member 9 is brought into contact with the side surface of the front end of the bottom beam member 5 at a right angle, and a spacer 14 is inserted into the vertical strut member 9 with bolts and nuts. The bottom beam member 5 and the vertical support member 9 are fastened together. Then, the attachment piece 13 at the upper end of the slant tie member 10 is fixed to the side surface of the vertical column member 9 with bolts and nuts, and the attachment piece 13 at the bottom end of the slant tie member 10 is attached to the side surface near the rear end of the bottom beam member 5. Secure with bolts and nuts.

  The wall surface material 4 uses an expanded metal. As shown in FIG. 3B, the wall material 4 is fitted into the slit 11 of the vertical column material 9 so that the wall surface material 4 abuts on the vertical column material 9. In such a state, the connecting rod 15 is inserted into the vertical strut member 9 on the front side of the wall surface member 4 so that the wall surface member 4 is attached to the front surface of the vertical strut member 9. Then, as shown in FIG. 2 (d), by engaging the hook with the connecting rod 15 with the hook bolt / nut 16, the bottom front end beam member 6, the vertical strut member 9, and the bottom beam member 5 are fixed together. To do.

  After the strength structure 2 is constructed in this way, the embankment (not shown) is filled so as to fill the bottom beam 5 on the back side of the wall material 4, and the upper surface of the embankment is rolled by a rolling roller. If pressed, the steel L-shaped retaining wall 1 can be completed.

  FIG. 4 shows the configuration of the L-shaped support body, and FIG. 5 shows a front view and a plan view of the strength structure body of Example 2 of the steel L-type retaining wall according to the present invention. The strength structure 18 in the steel L-type retaining wall of the second embodiment is substantially the same as that of the first embodiment, and in particular, the bottom beam member 5, the bottom front end beam member 6, and the rear anchor beam member in the L-shaped column 19. 7 and the diagonal tie material 10 have the same configuration as that of the first embodiment, and thus the description thereof is omitted. The configuration in which the second embodiment is different from the first embodiment is the vertical strut member 20 of the L-shaped strut body 19 and the mounting structure of the wall surface material 4 to the vertical strut member 20. To do.

  The vertical strut member 20 of the L-shaped strut body 19 of the second embodiment uses a U-shaped steel with a cross section, but may be an angle steel with a cross section. 4 (a) to 4 (c), the bottom surface of the bottom front end beam member 6 is brought into contact with the bottom of the front end of the bottom beam member 5 and fixed with bolts and nuts. It fixes to the side surface of the front end of the beam material 5 with a volt | bolt. A plurality of hexagon nuts 21 are welded to one front surface of the hexagonal nut 21 at intervals in the longitudinal direction on the front surface of the front portion of the vertical strut member 20 so that the hole of the hexagonal nut 21 faces in the vertical direction. It is fixed in a horizontal position.

  When the wall surface material 4 is attached to the vertical strut material 20, the wall surface material 4 is brought into contact with the front surface side of the vertical strut material 20 with a plurality of hexagon nuts 21 in the mesh, and in this state, a plurality of connecting bars 22 are provided. The hex nut 21 is inserted into the hole. Then, the wall surface material 4 is attached by this connecting bar 22 so as not to be detached from the vertical strut material 20.

  The oblique tie material 10 is attached in the same manner as in the first embodiment, and the attachment piece 13 at the upper end of the oblique tie material 10 is fixed to the side surface of the vertical support member 20 with bolts and nuts, and at the lower end of the oblique tie material 10. The mounting piece 13 is fixed to the side surface near the rear end of the bottom beam member 5 with bolts and nuts.

  FIG. 6 is a perspective view showing a steel L-shaped retaining wall strength structure 23 according to the third embodiment of the present invention. FIG. 7 shows the configuration of the L-shaped support body 25 and FIG. 8 shows a front view and a plan view of the strength structure 24 of the strength structure 24 of the steel L-shaped retaining wall 23 of the third embodiment.

  Since the bottom beam member 5, the bottom front end beam member 6, the rear anchor beam member 7 and the diagonal tie member 10 in the L-shaped support column 25 of the strength structure 24 of the third embodiment have the same configuration as in the first embodiment, the explanation will be omitted. Omitted. The main configuration in which the third embodiment is different from the first embodiment is that the vertical strut member 26 of the L-shaped strut body 25 and the half-timber 28 (thinned lumber. FIGS. 6 to 8) as the wall material 27 to the vertical strut member 26. (Refer to “Thinned wood” in the middle.)

  The vertical strut member 26 of the L-shaped strut body 25 of the third embodiment uses a pair of U-shaped steel 29 in cross section. As shown in FIG. 8 (b), the bottom surface of the bottom front end beam member 6 is brought into contact with the bottom of the front end of the bottom beam member 5 and fixed with bolts and nuts. Then, a pair of U-shaped steel 29 in cross section of the vertical strut member 26 sandwiches the side surface of the front end of the bottom beam member 5 and fixes it with bolts.

  An attachment structure for attaching the half-timber 28 as the wall material 27 to the front surface of the vertical support member 26 is as follows. A pair of washers 30 having hooks as shown in FIG. The halved wood 28 is brought into contact with the front surface of the vertical column member 26, and the hooks of the pair of washers 30 are engaged with the pair of U-shaped steels 29 of the vertical column member 26. Thereby, the half-timber 28 can be attached horizontally to the vertical support member 26.

  As shown to Fig.8 (a), it is set as the structure by which the halved wood 28 adjacent on the upper and lower sides is arrange | positioned and attached in the difference shape (staggered shape) difficult to the width direction of a retaining wall, and the through-hole part 31 is formed. However, the half-timbers 28 may be arranged without being arranged in such a difficult manner. The half-timber 28 that is the wall material 27 may be arranged in the vertical direction instead of in the horizontal direction.

  The oblique tie material 10 is attached in the same manner as in the first embodiment. The attachment piece 13 at the upper end of the oblique tie material 10 is sandwiched between a pair of vertical support members 26 and fixed with bolts and nuts. 10 is fixed to the side surface near the rear end of the bottom beam member 5 with bolts and nuts.

  In Example 3, before filling the embankment with the back side of the wall surface material 27, a tensor (trade name) (resin net material) 32 is fastened to the vertical column material 26 with a string on the back side of the wall surface material 27. Then, the back of the tencer 32 is filled with embankment.

  The steel L-type retaining wall according to the present invention is a steel L-type retaining wall composed of a plurality of banking structures in which a plurality of banking structures consisting of a plurality of L-shaped support bodies, wall materials, and banking are provided in the vertical direction. It is good also as a structure of a wall. As an example of such a steel L-shaped retaining wall, an example composed of a two-stage embankment structure will be described as Example 4 with reference to FIGS.

  FIG. 9 is a side view of a steel L-shaped retaining wall strength structure 33 according to a fourth embodiment of the present invention, in particular, an L-shaped support body 34 and its main part. FIG. 10 is a diagram illustrating the strength structure. The front view and top view of 33 are shown. In order to make the steel L-shaped retaining wall strength structure 33 of the fourth embodiment higher than the steel L-shaped retaining wall of the first embodiment, as shown in FIG. The vertical strut members 9, 9 'are connected and extended upward to form a vertical strut member 35.

  The structure of the lower stage of the steel L-type retaining wall strength structure 33 of the fourth embodiment is the same as in the first embodiment, including the bottom beam member 5 made of angle steel, the bottom front end beam member 6 and the rear anchor for the lower stage. A beam member 7 is provided, and a lower column support member 9 having a U-shaped cross-section folded back on the front side. The lower tie material 36 is a long plate-shaped saddle material.

  As in the first embodiment, the bottom beam member 5 and the back anchor beam member 7 are fastened to each other with bolts and nuts, as shown in FIGS. 9A and 10B. The structure in which the lower column material 9 is fastened to the bottom beam member 5 is the same as that of the first embodiment. As shown in FIGS. 9C and 9D, the bottom beam member 5 has a lower step on the side surface at the front end. The vertical beam member 9 is contacted in a right angle direction, and the bottom beam member 5 and the lower column material 9 for the lower stage are fastened to each other with bolts and nuts through the spacer 41 in the vertical column material 9 for the lower stage.

  The upper end of the lower tie member 36 is sandwiched between the U-shaped inner sides of the lower vertical column members 9 and fixed with bolts and nuts, and the lower end of the lower tie member 36 is the bottom beam member 5. Secure with bolts and nuts on the side near the rear end.

  As in the first embodiment, the wall surface material 4 uses an expanded metal, and as shown in FIG. 9A, the mesh portion of the wall surface material 4 is fitted into the slit 11 of the vertical support material 9 for the lower stage. The lower wall connecting rod 15 is inserted into the lower vertical column material 9 on the front side of the wall surface material 4 in a state where the material 4 is in contact with the lower vertical column material 9, so that the wall surface material 4 is It is attached so as to be stretched on the front surface of the vertical support member 9 for use.

  In this way, after constructing the lower portion 37 of the steel L-shaped retaining wall strength structure 33 of Example 4 and filling and rolling the embankment (not shown) on the back side of the wall surface material 4. The embankment structure at the lower stage of the steel L-shaped retaining wall can be completed. In this case, the embankment is not formed up to the upper end of the lower vertical column member 9, but as shown in FIG. The embankment is formed to a height of 38 (the height of the upper surface of the lower embankment) leaving an appropriate length portion.

  Thereafter, an upper beam member 39 using angle steel is disposed on the upper surface of the lower embankment, and the front end thereof is placed on the side surface of the lower vertical column member 9 as shown in FIG. (Not shown) with bolts and nuts, and the rear ends thereof are fastened with bolts and nuts to the rear anchor beam member 40 for the upper stage.

  Further, the upper vertical columnar material 9 ′ is fixed to the upper end of the lower vertical columnar material 9 with a bolt and a nut via a joint 41. And, as shown in FIG. 9 (a), the upper and lower diagonal tie members 10 with the turnbuckles as in the first embodiment are respectively connected to the upper column support members 9 'and the attachment pieces 13 as shown in FIG. The rear anchor beam member 39 is fastened with bolts and nuts to the rear end portion.

  The upper wall portion 4 ′ is attached to the upper vertical column member 9 ′ by the upper connecting rod 15 ′, and the upper portion 42 of the strength structure 33 of the steel L-type retaining wall of Example 4 is provided. Built. Thereafter, an upper bank structure can be constructed by filling the upper bank with the upper bank on the back side of the wall materials 4 and 4 'and rolling it on the lower bank, and the steel L-shaped retaining wall of Example 4 can be constructed. Can be completed.

  As mentioned above, although the best form of the steel L-shaped retaining wall and its construction method according to the present invention has been described based on examples, the present invention is not particularly limited to such examples, and It goes without saying that there are various embodiments within the scope of the technical matter described.

  As described above, the steel L-type retaining wall and the construction method thereof according to the present invention can be configured by assembling and arranging a plurality of L-type struts of a strength structure independently in the width direction of the retaining wall, and attaching a wall surface to them. Therefore, it is not necessary to use large and heavy materials, which makes it easy to transport, bring in and construct materials. Therefore, it is ideal for application of retaining walls such as roads in inconvenient places such as mountainous areas.

It is a perspective view of Example 1 of the steel L-type retaining wall according to the present invention. (A) is a side view of the L-shaped support body, (b) is a side view of the vertical support material and its AA sectional view, (c) (D) is a figure explaining the principal part of an L-type support | pillar body. (A) is a front view of the strength structure of Example 1 of the steel L-shaped retaining wall according to the present invention, and (b) is a plan view thereof. Each structural member of the L type | mold support body of Example 2 is shown, (a) is a side view of an L type | mold support body, (b), (c) is a figure explaining the principal part of an L type | mold support body. . (A) is a front view of the intensity | strength structure of Example 2 of the steel L-shaped retaining wall based on this invention, (b) is the top view. It is a perspective view of Example 3 of the steel L-shaped retaining wall according to the present invention. Each structural member of the L type | mold support | pillar body of Example 3 is shown, (a) is a side view of a L type | mold support | pillar body, (b) shows the top view of a washer, and its AA sectional drawing, (c) These are the figures explaining the principal part of an L-type support | pillar body. (A) is a front view of the intensity | strength structure of Example 3 of the steel L-shaped retaining wall based on this invention, (b) is the top view. (A) is a side view of an L-shaped support body, (b) is a side view of a vertical support material and its AA sectional view, (c) (D) is a figure explaining the principal part of an L-type support | pillar body. (A) is a front view of the intensity | strength structure of Example 4 of the steel L-shaped retaining wall based on this invention, (b) is the top view.

Explanation of symbols

1 Steel L-type retaining wall
2 Strength structure
3 L-type support
4, 4 'wall material
5 Bottom beam material
6 Bottom front girder material
7 Back anchor beam
9, 9'35 Vertical strut material
10 Oblique tie material
11 Slit
12 Turnbuckle
13 Turnbuckle mounting piece
14 Spacer
15, 15 'connecting rod
16 Hook bolts and nuts
18 Strength structure
19 L-type support
20 Vertical strut material
21 Hex nut
22 Connecting bars
23 Steel L-shaped retaining wall of Example 3
24 Strength structure
25 L-type support
26 Vertical strut material
27 Wall material
28 Half-timber (thinned wood)
29 (a pair of) U-shaped steel
30 (a pair of) washers
31 Through hole
32 Tensor 33 Strength structure of steel L-type retaining wall of Example 4 34 L-type support body 35 Vertical support material 36 Lower slant tie material 37 Strength structure lower part of Example 4 Upper surface height of lower embankment 38 39 Upper beam member 40 Upper anchor beam member for upper column 41 Joint of upper and lower vertical strut members 42 Upper portion of strength structure of embodiment 4

Claims (5)

A plurality of L-type struts are independently arranged at appropriate intervals in the width direction in which the retaining wall is formed, and a wall surface material is provided on the front side of the plurality of L-type struts. A steel L-shaped retaining wall formed by embankment on the back side of the material,
The plurality of L-shaped struts extend upward to the front end of the bottom beam member, the bottom front end beam member and the rear anchor beam member attached at the front and rear positions of the bottom beam member, and the bottom beam member, respectively. A fixed vertical strut material, and a slant tie material constructed between the bottom beam material and the vertical strut material,
In each of the plurality of L-shaped struts, the bottom beam member, the bottom front end beam member, and the rear anchor beam member are arranged and fixed so as to be entirely planar I-shaped by the three members,
The vertical strut material is a U-shaped steel or an angle steel with a cross-section, and welds one surface of the hexagon outer surface of a plurality of hexagon nuts to the front side portion thereof in the longitudinal direction so that the holes of the hexagon nuts are vertically The wall surface material is a mesh member, and the plurality of hexagon nuts are inserted into the mesh of the wall surface material so that the wall surface material is in contact with the vertical strut material. A steel L-shaped retaining wall, wherein a connecting rod is inserted into the hole and the wall member is attached to the vertical support member. A plurality of L-type struts are independently arranged at appropriate intervals in the width direction in which the retaining wall is formed, and a wall surface material is provided on the front side of the plurality of L-type struts. A steel L-shaped retaining wall formed by embankment on the back side of the material,
The plurality of L-shaped struts extend upward to the front end of the bottom beam member, the bottom front end beam member and the rear anchor beam member attached at the front and rear positions of the bottom beam member, and the bottom beam member, respectively. A fixed vertical strut material, and a slant tie material constructed between the bottom beam material and the vertical strut material,
In each of the plurality of L-shaped struts, the bottom beam member, the bottom front end beam member, and the rear anchor beam member are arranged and fixed so as to be entirely planar I-shaped by the three members,
The vertical strut material is a pair of U-shaped steels in cross section, the wall surface material is composed of a plurality of thinned materials, a pair of washers having hooks is fixed to the thinned materials, and the thinned materials are A steel L-type, comprising: a pair of washer hooks engaged with the pair of U-shaped steels in cross-section, and the wall surface member attached to the vertical strut material. Retaining wall.   The steel L-shaped retaining wall according to claim 1 or 2, wherein the plurality of L-shaped support columns, wall surface materials, and embankments are provided in a plurality of stages in the vertical direction. Forming an L-shaped support body, placing a suitable interval in the width direction in which the retaining wall is formed, and arranging each of the plurality of L-type support bodies independently; and the front side of the plurality of L-type support bodies A method for constructing a steel L-shaped retaining wall comprising a step of attaching a wall material to the wall and a step of forming a bank on the back side of the wall material,
In the step of forming the L-shaped pillar body, is fixed to extend the longitudinal struts over the front end of the bottom beam members, the bottom surface front spar and the rear to the front and rear of the bottom beam member for fixing the vertical struts An anchor beam material is fixed by the three members so as to form a plane I as a whole, and then an oblique tie material is installed between the bottom beam material and the vertical strut material. How to install the retaining wall. A series of steps consisting of a step of independently arranging the plurality of L-type support members, a step of attaching a wall surface material to the front side of the plurality of L-type support members, and a step of forming a bank on the back side of the wall surface material. The construction method of the steel L-type retaining wall according to claim 4, wherein a retaining wall having a plurality of levels of embankments is constructed by repeating a plurality of times upward.

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