JP2006241896A - Lightweight banking structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight banking structure having a wall surface material mounting structure for mounting a wall surface material 7 to a post 10 in a small number of processes and maintaining high mounting stability. <P>SOLUTION: A fixture 30 having a first region 31 abutting on the post 10, and a second region 32 engaged with an engaging implement 21 mounted to the back face of the wall surface material 7, is used in mounting the wall surface material 7 to the front face side of the erected post 10 in the lightweight banking structure. The wall surface material 7 is put in an attitude to abut on the post, and the fixture 3 is slid along the post 10 from the top to the bottom. With this one operation, the wall surface material 7 is mounted to the post 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lightweight embankment structure, and more particularly, to a lightweight embankment structure characterized by an attachment structure of a wall material and a column for protecting a lightweight embedding material that is a resin foam block.

  As one of the embankment methods on soft ground or landslide land, a lightweight embankment structure using a resin foam block made of a foamed resin body such as expanded polystyrene (EPS) as a lightweight embankment material is known, such as the EPS method. It has been. As shown in FIG. 13, in the construction, an appropriate support column 1 is erected, and the resin foam blocks 3 are stacked in multiple stages between the back side of the support column 1 and the supporting ground 2, To do. A concrete floor slab 4 is disposed on the upper surface of the stacked resin foam block 3, and a roadbed 5 and asphalt pavement 6 are formed thereon as a finish construction to form a lightweight embankment structure. Since the resin foam block as a lightweight embankment is easily deteriorated by direct sunlight, a relatively light wall material 7 such as a lightweight concrete board is attached in multiple stages on the front surface side of the upright support column 1 in order to prevent it. . In the figure, 8 is an anchor attached to the concrete floor slab 4.

  At the construction site, it is not easy to attach the wall material to the upright column in multiple stages, and many proposals have been made to obtain a simple and stable attachment structure. Patent Document 1 describes a structure in which a wall material is attached in multiple stages using a fixture on the front surface side of an upright support in a lightweight embankment structure, in which a wall material having a slit groove on the back surface is described. , And the other end of the screw rod is fixed to the flange of the column with a fixing hardware and nut in a state where the bulging tip of the screw rod which is a mounting bracket is fitted in the slit. . By fitting the bulging tip of the screw rod into the slit on the back surface of the wall surface material, the wall surface material is prevented from moving forward, and by tightening the nut, a stable mounting state can be obtained.

  Patent Document 2 describes a fixing structure of a retaining wall construction form panel. Here, the protrusion of a fixture having a protrusion that can be inserted into the hook using a wall material provided with a hook on the back surface. With the part inserted into the hook, the other end of the rod member having one end attached to the fixture is temporarily fixed to a support column standing rearward by welding or the like. After temporarily fixing the wall material to the required number of steps, fillers such as ready-mixed concrete, air mortar, and earth and sand are placed on the back.

Patent Document 3 describes a formwork for constructing a concrete structure and a construction method thereof. Here, a molding plate having a hook on the back surface is used, and a column is arranged between the back surface of the molding plate and the hook. In this state, a wedge is driven there, and the molded plate is integrally fixed to the column with frictional resistance.
JP 2000-73367 A JP 2002-121852 A JP-A-8-158512

  In the lightweight embankment structure, it is desired that the wall material is attached to the upright column in a simple manner and has high stability. From this viewpoint, the conventional attachment structure still needs to be improved. The structure described in Patent Document 1 is a multi-step complicated process, such as an operation of fitting the protruding end of the screw rod into a slit groove formed on the back surface of the wall surface material, or an operation of tightening the other end of the screw rod to the support column with a nut. Work is required. The structure described in Patent Document 2 is the same, and requires a multi-step operation of welding the other end of the bar member attached to the fixture to the support after inserting the fixture into the hook of the wall material. Moreover, the wall surface material and the column are separated from each other, and the wall surface material cannot be stably maintained until a filler such as ready-mixed concrete is placed on the back side.

  The method of Patent Document 3 can complete the attachment of the molded plate to the support column only by driving the wedge, and the number of processes is small. However, the fixing of both is basically only the frictional resistance, and the mounting stability is lacking. In other words, when using concrete as a concrete formwork and placing the concrete after construction to integrate the whole, there is no particular problem, but a lightweight embankment structure using a resin foam block as a lightweight embankment. When this fixing method is used, the wedge that has been driven is placed in the release space, so that there is a possibility that the wedge moves due to vibrations from the outside and the fixing is released.

  The present invention has been made in view of the circumstances as described above, and in a lightweight embankment structure, a wall surface material can be attached to a support column with a small number of steps and can maintain high attachment stability. An object of the present invention is to provide a lightweight embankment structure having a structure.

  In the lightweight embankment structure according to the present invention, wall materials are attached to the front surface side of the upright columns in multiple stages using a fixture, and a resin foam block is formed as a lightweight embankment material on the rear surface side of the columns. A light-weight embankment structure having at least a structure in which finishing structure materials such as a concrete floor slab and a roadbed are arranged on the upper surface of the light-weight embankment material, wherein the attachment is in contact with the support column. And a second region that engages with the back surface of the wall material, and an engagement portion that engages with the second region of the fixture is provided on the back surface of the wall material, between the wall material and the column. The mounting structure that prevents the wall surface material from moving forward by bringing the first region of the fixture into contact with the column and engaging the second region with the engaging portion of the wall surface material follows the column. Is provided in multiple stages. To (claim 1).

  In the above-mentioned lightweight embankment structure, when attaching the wall surface material, the back surface of the wall surface material is brought into contact with the upright support column, and the first region portion of the attachment tool is pressed (contacted) to the support column. Only by the work of lowering the tool (or lowering the wall material with respect to the already-attached fixture), the engaging portion on the back surface of the wall material and the second region of the fixture are engaged. It is attached to the column in a state where it is prevented from moving forward. This operation is one step and very simple. Furthermore, the wall surface material and the fixture are integrated with the column in a state of being engaged with each other, and the attachment state is extremely stable, and the attachment structure does not come off even when an external force such as vibration is applied.

  The wall surface material may be attached to the column by a fixture in a posture in which the back surface is in surface contact with the front surface of the column (Claim 2), and another member (between the back surface of the wall material and the front surface of the column ( It may be attached to the support column with a fixture in a posture holding a cushioning material or the like. The separate member may be integrated on the back surface of the wall material with an adhesive or the like.

  The shape of the engaging portion provided on the back surface of the wall surface material and the second region of the fixture engaged therewith is in a state of being engaged with each other by relative movement in the vertical direction, to the front of the wall surface material. There is no limitation as long as it forms an attachment structure in which movement of the film is prevented. For example, the engaging portion of the wall material is a member having an L-shape in a vertical shape, and the second region of the fixture is provided with a notch that enters the L-shaped member (Claim 3). The joint portion is a rod member having a bulging portion at the tip, and the second region of the fixture is provided with a notch portion into which the main body portion of the rod member enters (Claim 4), or the engaging portion of the wall surface material Is a member that forms a U-shape in the horizontal direction, and the second region of the fixture includes a protrusion that is inserted into the U-shaped member (Claim 5).

  In the light-weight embankment structure according to the present invention, the wall material is reliably prevented from moving forward after the wall material is attached to the support column. In other words, there is a risk of displacement in the direction in which a plurality of columns are erected. In a preferred embodiment of the lightweight embankment structure according to the present invention, in order to avoid this, the column has a flange along the edge of the front surface, and the first region of the fixture is engaged or sided with the flange. And a structure in which the wall material is prevented from moving in the lateral direction by being engaged or in a contact state from the side (Claim 6). In this aspect, the movement of the wall surface material toward the front and the movement in the lateral direction can be surely prevented, and the attachment mode of the wall surface material is further stabilized.

  ADVANTAGE OF THE INVENTION According to this invention, the light-weight embankment structure provided with the wall surface material attachment structure which can attach a wall surface material to a support | pillar with few processes and can also maintain high attachment stability is obtained.

  Hereinafter, the present invention will be described based on embodiments with reference to the drawings. FIGS. 1-7 is a figure explaining some examples of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention, and only the wall material, the support | pillar, and the fixture used there for easy understanding. Only shown. 8 to 10 show three examples of wall materials used in the lightweight embankment structure according to the present invention. FIG. 11 and FIG. 12 are diagrams for explaining still another example of the structure for attaching the column and wall material in the lightweight embankment structure according to the present invention. Here, only the wall material, the column and the fixture used there are illustrated. Show.

  In the example shown in FIG. 1, the support column 10 has a posture in which two C-shaped steels 11, 11 are brought into contact with each other on the back surfaces 12. A flange 13 is raised. The column 10 is erected on the supporting ground in the same manner as in the conventional lightweight embankment structure described with reference to FIG. 13 and is not shown in FIG. 3 are stacked in multiple stages as lightweight embankment materials. On the upper surface of the lightweight embankment material 3, finishing structure materials such as a concrete floor slab 4, a roadbed 5, and an asphalt pavement 6 are arranged. And the wall surface material 7 is attached to the front surface side of the support | pillar 10 in multiple stages by the intrinsic | native attachment means by this invention. In FIG. 1, only one support column 10 is shown. However, in an actual construction site, a necessary number of support columns 10 are erected at a predetermined interval. A wall material 7 having the same width as the interval between 10 is attached so as to cross between the columns 10.

  The wall material 7 used in the present invention is basically a rectangular wall material used in a conventional lightweight embankment structure and is made of lightweight concrete or the like. However, the engagement tool 21 is provided in the center region and both side regions in the longitudinal direction on the back side by an appropriate method. A wall material 7 used in the mounting structure shown in FIG. 1 is shown in FIG. In this wall member 7, an L-shaped engagement tool 21 a made of an L-shaped steel material is used as the engagement tool 21. The L-shaped engagement tool 21 a has a horizontal base portion 22 a and a rising portion 22 b, and the end portion of the horizontal base portion 22 a is embedded in the wall surface material 7.

  In the central region in the longitudinal direction of the wall surface material 7, two L-shaped engagement tools 21 a are attached on the upper side and two L-shaped engagement tools 21 a on the lower side with an interval a slightly wider than the lateral width of the column 10. The two L-shaped engagement tools 21a on the upper side have a rising portion 22b extending upward from the horizontal base portion 22a, and the two L-shaped engagement tools 21a on the lower side have a rising portion 22b. It extends downward from the horizontal base 22a. In the left and right side regions, one L-shaped engagement tool 21a is attached on the upper side and one side on the lower side at a position a / 2 distance from the side. Similarly, the upper side L-shaped engagement tool 21a has a rising portion 22b extending upward from the horizontal base 22a, and the lower side L-shaped engagement tool 21a is directed downward from the horizontal base 22a. The rising portion 22b extends. Note that the length of the horizontal base portion 22a is substantially the same as the plate thickness of the fixture 30 to be used.

  The mounting tool 30 used in the present invention includes a first region 31 that engages with the support column 10 and a second region 32 that engages with the engaging tool 21 provided on the back surface of the wall surface material 7 described above. The mounting tool 30 used in the mounting structure shown in FIG. 1 is made by bending and cutting a steel plate, and the first region 31 is a U-shaped portion 31 a that fits into the flange 13 of the column 10. The second region 32 includes a flat portion 32a and vertical cutouts 33 formed at upper and lower edges thereof.

  In order to attach the wall surface material 7 to the support column 10, the lower wall surface material 7 a is placed between the L-shaped engagement tools 21 a, 21 a in the center region, and the back surface is placed on the front surface of the support column 10. Abut. The required number of wall surface materials 7 are also arranged on the left and right in the same manner. In this state, the operator holds the attachment tool 30 in his / her hand and faces the attachment tool 30 downward from above in a posture in which the U-shaped portion 31a which is the first region 31 is fitted to the flange 13 of the support column 10. Move. As a result, the lower notch 33 of the attachment 30 and the L-shaped engagement tool 21a attached to the back surface of the wall surface material 7 are gradually engaged, and the upper end edge of the notch 33 has an L-shaped engagement. The attachment tool 30 stops at the position where it collides with the horizontal base 22a of the tool 21a. The same operation is performed on the other flange 13 of the column 10.

  In the posture in which the L-shaped engagement tool 21a is stopped, the rising portion 22b of the L-shaped engagement tool 21a is substantially in contact with the back surface of the flat surface portion 32a of the attachment tool 30, and the wall surface material 7 is moved forward. It is attached to the column 10 in a state where the movement is blocked. Moreover, the U-shaped part 31a of the fixture 30 is fitted in the flange 13 of the support | pillar 10 in that state, and the horizontal movement of the wall surface material 7 is also prevented.

  Next, the upper wall material 7b is attached. In the example of FIG. 1, the row of the lower wall member 7a and the row of the upper wall member 7b are arranged in a zigzag pattern. For this reason, the back surface of the right side region of the upper wall member 7b is attached to the column. 10 is slid from the upper side to the lower side as a posture in contact with the front surface of the C-shaped steel 11 located on the left side in FIG. When approaching the lower wall member 7a already attached, the L-shaped engagement tool 21a attached below the side region gradually enters the notch 33 above the attachment fitting 30 already attached, The movement of the wall surface material 7b stops when it contacts the lower wall surface material 7a. When stopped, the upper wall member 7b is attached to the support column 10 in a posture in which movement in the front and lateral directions is restricted, as in the case of the lower wall member 7a. Furthermore, the upper wall material 7b which is located on the right side in the figure is directed from the upper side to the lower side in a posture in which the left edge region is brought into contact with the front surface of the C-shaped steel 11 located on the left side of the support column 10. By sliding, the wall surface material 7b is also attached to the column 10 in the same manner.

  Hereinafter, the wall surface material 7b is used as the wall material at the lower end, and the upper wall material 7c is attached to the support column 10 in the same manner as the above-described manner of attaching the wall surface material 7a. By repeating this operation over the required number of steps, the wall material attaching operation is completed. In FIG. 1, reference numeral 40 denotes a second attachment tool, and the second attachment tool 40 is formed only by the second region 32 of the attachment tool 30. The 2nd attachment tool 40 is used for joining the wall material 7 of the upper and lower sides and right and left in the location where the support | pillar 10 is not located like illustration.

  As described above, in the lightweight embankment structure according to the present invention, when the wall surface material 7 is attached to the support column 10, the back surface of the wall surface material 7 is brought into contact with the front surface of the support column 10, and in this state, the attachment tool 30 is attached to the support column 10. If the wall surface material 7 is moved along the support column 10 with respect to the fixture 30 that has already been attached, the mounting operation of the wall surface material 7 on the support column can be completed. Greatly simplifies. Moreover, the attachment state is a state in which the engagement tool 21 on the wall surface material 7 side and the second region 32 of the attachment tool 30 are engaged with each other, and extremely stable attachment is obtained.

  In the illustrated example, the back surface of the wall surface material 7 is brought into contact with the front surface of the support column 10 by direct surface contact. However, an appropriate cushioning material is disposed on a portion of the back surface of the wall surface material 7 facing the support column 10. Then, you may make it perform said attachment operation | work.

  FIG. 2 shows another mounting structure of the support and wall material in the lightweight embankment structure according to the present invention. Here, the first region 31 of the fixture 30a is different from that described with reference to FIG. 1 in that the first region 31 includes a U-shaped portion 31a and a planar portion 34 that extends laterally therefrom. The flat portion 34 preferably has a width substantially equal to the internal width of the front surface of the C-shaped steel 11 constituting the support column 10. By using the attachment 30a having this shape, a more stable attachment state can be obtained. In addition, the same code | symbol is attached | subjected to the same member and description of an attachment procedure etc. is abbreviate | omitted.

  FIG. 3 shows still another attachment structure of the support and wall material in the lightweight embankment structure according to the present invention. Here, the inner width of the U-shaped portion 31a1 which is the first region 31 of the fixture 30b is wider than that of the U-shaped portion 31a shown in FIG. To do. By using the attachment tool 30b having the U-shaped portion 31a1 having a wide internal width in this way, it is possible to easily cope with construction errors and attachment errors of the engagement tool 21 to the wall surface material 7. Become. Here, the same reference numerals are assigned to the same members, and the description of the attachment procedure and the like is omitted.

  FIG. 4 shows still another structure for attaching the column and wall material in the lightweight embankment structure according to the present invention. Here, the engaging member 21 provided on the back surface of the wall surface material 7A to be attached is not the L-shaped engaging member 21a, but a bar member 21b in which the tip of the main body 23a is a bulging portion 23b as shown in FIG. The difference is that the wall material 7A is used. The length of the main body 23a of the bar member 21b is substantially the same as the plate thickness of the fixture 30 used. In addition, the attachment position of the bar member 21b as the engaging tool 21 is the same as the wall surface material 7 demonstrated based on FIG. The method of attaching the wall surface material 7A to the support column 10 is substantially the same as the case of using the wall surface material 7 shown in FIG. 8, and the same members are denoted by the same reference numerals and description thereof is omitted. 4 shows the attachment tool 30a shown in FIG. 2 as an attachment tool, the attachment tool 30 shown in FIG. 1 and the attachment tool 30b shown in FIG. it can.

  FIG. 5 shows still another structure for attaching the column and wall material in the lightweight embankment structure according to the present invention. Here, as described above, the single wall surface material 7a and the wall surface material 7b or the wall surface material 7b and the wall surface material 7c are not attached to the support column 10 at the same time by using one mounting tool 30. The material 7A is attached to the column 10 independently. For this purpose, as the attachment tool 30c, a tool having a low height in which a vertical cutout 33 is formed only at the lower edge of the second region 32 is used. The basic shape of the mounting tool 30c shown in the figure is the same as the mounting tool 30a shown in FIGS. 2 and 4, but is the same basic shape as the mounting tools 30, 30b shown in FIG. 1 or FIG. Also good.

  When using this attachment tool 30c, it is not necessary to attach the wall surface material 7A in order from the bottom to the top as in the case described above (of course, it may be attached in this manner), and the wall surface is multi-staged. The material 7A can be brought into contact with the support column 10, and can be engaged with the individual engaging tools 21b while sliding the mounting tool 30c in random order. When the wall member 7 having the L-shaped engagement tool 21a shown in FIG. 8 is attached using the attachment tool 30c, it is necessary to reverse the direction of the L-shaped engagement tool 21a on the lower side. It becomes. Moreover, the 2nd attachment tool 40 shown in FIG. 1 is used in the location without the support | pillar 10. FIG.

  FIG. 6 and FIG. 7 show still another attachment structure of the column and wall material in the lightweight embankment structure according to the present invention. Here, as shown in FIG. 10, the engagement tool 21 provided on the back surface is different in that a wall surface member 7B which is a member 21c having a U-shape in the horizontal direction is used. The U-shaped member 21c may be a curved steel material or a steel wire. In either case, the tip side is embedded in the wall surface material 7B. The position of attaching the U-shaped member 21c as the engaging tool 21 in the horizontal direction is the same as that of the wall surface material 7 described with reference to FIG.

  In order to attach the wall surface material 7B of this form so as not to move forward with respect to the support column 10, a part of the attachment tool 30 is inserted into the member 21c having a U shape in the horizontal direction without play. There is a need. The attachment structure shown in FIG. 6 corresponds to the attachment structure shown in FIG. 1 described above, but the attachment 30d used here has a second region 32 perpendicular to the back surface of the wall surface material 7B. The rising piece 32b is bent. In addition, although the shape of the 1st area | region 31 is arbitrary, it is set as the 2nd standing piece 31b contact | abutted from the side to the flange 13 of the support | pillar 10 here.

  By appropriately setting the heights of the upper and lower protrusions 32c and 32c inserted into the U-shaped member 21c in the rising piece 32b that forms the second region 32 of the attachment 30d, FIG. The upper and lower wall surface materials 7B can be stably attached to the support column 10 simultaneously by the same procedure as described above. In FIG. 6, reference numeral 40a denotes a second attachment tool, and the second attachment tool 40a is formed only by the second region 32 of the attachment tool 30d. The usage is the same as that of the second fixture 40 shown in FIG.

  The attachment structure shown in FIG. 7 is similar to the attachment structure shown in FIG. 5 described above, and each wall surface material 7B is attached to the column 10 independently. For this purpose, the attachment 30e is provided with a protruding portion 32c inserted into the U-shaped member 21c only at the lower end edge of the rising piece 32b. Note that the illustrated attachment tool 30e has a portion 31c in which the lower end of the second rising piece 31b is further bent in the horizontal direction as a first region, thereby obtaining a stable attachment mode. It may be omitted. The procedure for attaching the wall surface material 7B is the same as that described with reference to FIG.

  In the above description, the C-shaped steel 11 having the flange 13 is used as the support column 10. However, the C-shaped steel 11 a without a flange can be used as the support column 10, and H-shaped steel can also be used. FIG. 11 exemplifies a case where C-shaped steel 11a without a flange is used as the column 10, and the attachment tool 30f used here is a flat plate as a whole, and the right half in the figure constitutes the first region 31, and the left Half constitutes the second region 32. A vertical cutout 33 is formed in the second region 32. Although not shown, a step corresponding to the plate thickness of the C-shaped steel 11 a may be formed between the first region 31 and the second region 32. In FIG. 11, the wall surface material 7A shown in FIG. 9 is used as an example of the wall surface material 7, and the attachment structure corresponds to that shown in FIG. 4, and the attachment procedure is the same as that shown in FIG.

  Moreover, in the example shown in FIG. 11, the support | pillar 10 is comprised only with one C-shaped steel 11a, However, You may make it comprise the support | pillar 10 with the two C-shaped steel 11a which does not have a flange. Even when the column 10 is constituted by one C-shaped steel 11 a shown in FIG. 11, the wall material can be prevented from moving in the lateral direction by attaching a plurality of wall materials continuously in the lateral direction.

  In FIG. 12, H-shaped steel 10H is used as the support 10. Also in this case, it is not necessary to explain that the wall surface member 7A can be attached using the attachment 30f, which is a flat plate as described above, in the same manner as shown in FIG.

  In the attachment structure shown in FIGS. 11 and 12, the wall surface material 7 having the form shown in FIG. Although not shown in the figure, even when a pillar without a flange is used, each plate-like mounting tool having a notch 33 only on the lower end side is used, as in the structure shown in FIG. 5 or FIG. A wall material can also be attached to the column 10 independently.

The figure which shows an example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the other example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows an example of the wall surface material used with the lightweight banking structure by this invention. The figure which shows the other example of the wall surface material used with the lightweight banking structure by this invention. The figure which shows the further another example of the wall surface material used with the lightweight banking structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. The figure which shows the further another example of the attachment structure of the support | pillar and wall surface material in the lightweight embankment structure by this invention. Schematic explaining a lightweight embankment structure.

Explanation of symbols

7, 7A, 7B ... wall material, 21, 21a, 21b ... engagement tool provided on the wall material, 10 ... post, 11 ... C type steel, 12 ... back surface of C type steel, 13 ... flange of C type steel, 30,30a ˜30f... Fixture, 31... First region, 32... Second region 33 .. vertical cutout, 40, 40a.

Claims (6)

Wall materials are attached to the front surface side of the upright columns in multiple stages using attachments, and the resin foam blocks are stacked in multiple stages as lightweight embankment materials on the rear surface side of the support columns. A light-weight embankment structure having at least a configuration in which finishing structure materials such as a concrete floor slab and a roadbed are arranged on the upper surface,
The fixture includes a first region that abuts on the support column and a second region that engages with the back surface of the wall surface material, and an engagement portion that engages with the second region of the fixture is provided on the back surface of the wall material. The wall material is moved forward by contacting the first region of the fixture to the column and engaging the second region with the engaging portion of the wall material between the wall material and the column. A light-weight embankment structure characterized in that a mounting structure that is prevented is provided in multiple stages along the support column.   The light-weight embankment structure according to claim 1, wherein the wall surface material is attached to the support column by the mounting tool in a posture in which a rear surface thereof is in surface contact with a front surface of the support column.   The engaging portion of the wall material is a member that is L-shaped in a vertical shape, and the second region of the fixture is provided with a notch that enters the L-shaped member, and the L-shaped member and the notch are mutually connected. The lightweight embankment structure according to claim 1 or 2, wherein the attachment structure is formed by being in an engaged state.   The engaging portion of the wall material is a bar member having a bulging portion at the tip, and the second region of the fixture is provided with a cutout portion into which the main body portion of the bar member enters, and the bar member and the cutout portion are mutually connected. The lightweight embankment structure according to claim 1 or 2, wherein the attachment structure is formed by being in an engaged state.   The engaging portion of the wall material is a U-shaped member in the horizontal direction, and the second region of the fixture has a protruding portion inserted into the U-shaped member, and the protruding portion is provided in the U-shaped member. The lightweight embankment structure according to claim 1 or 2, wherein the attachment structure is formed by entering and engaging with each other.   The strut has a flange along the edge of the front surface, and the first region of the fixture has a portion that engages or abuts the flange from the side, and both are engaged or laterally. The lightweight embankment structure according to any one of claims 1 to 5, further comprising a structure in which movement of the wall surface material in the lateral direction is prevented by being in a contact state.

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