JP4834649B2 - Construction structure of embankment structure, retaining wall block for construction of embankment structure and construction method of embankment structure - Google Patents

Description

  The present invention relates to an embankment structure for constructing an embankment structure in construction work such as road widening work or land preparation in a mountainous area, and more specifically, a retaining wall constructed by stacking retaining wall blocks. It is related with the embankment structure which piles up a foamed resin block in multiple steps inside. Moreover, it is related with the retaining wall block for this embankment structure structure. Furthermore, it is related with the construction method of the said embankment structure.

  A highly stable embankment structure is constructed by significantly reducing the earth pressure acting on the retaining wall, and a foamed resin block is installed inside the constructed retaining wall for the purpose of reducing construction costs and shortening the construction period. The embankment structure which piles up is built widely.

  For example, in construction work such as road widening and land preparation in mountainous areas, a retaining wall is constructed on the other side of the construction space where one side is configured as sloped land for embankment or cutting, and the retaining wall and the sloped land The retaining wall in the conventional embankment structure in which the foam is filled with a lightweight embankment by stacking foam resin blocks such as a polystyrene block in the space between, generally H-shaped steel, the lower end portion It was built by burying it in foundation concrete and standing up at the required intervals, and by attaching wall materials such as lightweight concrete plates between the H-section steels.

  However, when using such a conventional embankment structure, it is high in the verticality of the H-section steel, the interval between the H-section steels, the uniformity of the outer surface of the H-section steel row to be erected, etc. Because accuracy is required, special technicians were required. Moreover, since work inside and outside the H-section steel is required, it is very dangerous, for example, it is necessary to work with a scaffold outside the H-section steel, such as the valley side when widening a mountain road. In addition to being forced to work, there was a problem that the overall construction cost was expensive.

  Therefore, in order to avoid the risk of work in the conventional embankment structure that uses the H-shaped steel to construct the retaining wall and to achieve a reduction in retaining wall construction cost, the present applicant in JP 2005-155135 A, An embankment structure d using a retaining wall block c made of precast concrete having an L-shaped cross section composed of a wall part a and a bottom board b as shown in FIG. 59 has been proposed. The embankment structure d constructs a retaining wall f by continuously laying the retaining wall block c on the foundation surface e, and stacks the foamed resin blocks g inside the retaining wall f to form a lightweight embankment h. It was of the structure to form.

  In the embankment structure d using such a retaining wall block c, there is no danger of having to work with a scaffold outside the H-shaped steel (valley side, etc.) as in conventional construction, and safety in construction. There is an advantage that can be secured, and there is also an advantage that the workability and construction economy are excellent. However, the height of the wall portion a of the retaining wall block c is at most 5 m due to restrictions on transportation of the retaining wall block by the truck. Therefore, the embankment structure having a wall height exceeding 5 m could not be constructed using such a retaining wall block, and the conventional H-shape that could be constructed even with a large retaining wall having a height exceeding 5 m. The problem which cannot fully solve the problem of the embankment structure by steel standing was left.

JP-A-2005-155135

  The present invention has been developed in view of the above-mentioned conventional problems, and is based on the fact that foam resin blocks are stacked in multiple stages inside a retaining wall constructed by stacking retaining wall blocks. An object of the present invention is to provide an embankment structure that can be reliably and easily constructed safely even in a large embankment structure, and that can reduce construction costs and shorten the construction period. Another object is to provide a retaining wall block suitable for the construction of the embankment structure. In addition, an object of the present invention is to provide a construction method for an embankment structure suitable for constructing the embankment structure.

In order to solve the above problems, the present invention employs the following means.
That is, the embankment structure for constructing the embankment structure according to the present invention (hereinafter referred to as embankment structure) is a embankment structure in which the embankment structure is constructed by stacking foamed resin blocks inside the retaining wall constructed in the construction space. The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion protrudes from a lower end portion of a vertical wall portion, the horizontal plate portion is directed to the same side, and upper and lower horizontal plate portions are in a parallel state. It is designed to be built by stacking. The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A gap of 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is stacked with the foamed resin block inside the vertical wall portion of the lower retaining wall block. An intermediate floor slab is provided on the upper surface of the light weight embankment, and is provided on the upper surface so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located on the upper surface. The plate portion and the intermediate floor slab are connected via a connecting portion so that the joint portion between them is not separated in the vertical direction and the horizontal direction. In addition, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, the upper end side is provided with a bolt hole as a long and long hole through which a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is inserted. The upper end side can be fixed to the vertical wall portion by being tightened prior to constructing the intermediate floor slab, and after the intermediate floor slab is constructed, the elongated hole is inserted by being loosened. The fixing bolt is In the hole, the amount corresponding to the vertical width of the gap, is characterized in that it is made possible descent.

  Another aspect of the embankment structure according to the present invention is an embankment structure that constructs an embankment structure by stacking foamed resin blocks inside a retaining wall constructed in a construction space, and the retaining wall includes a vertical wall portion. An L-shaped retaining wall block with a horizontal plate projecting at the lower end is constructed by stacking the horizontal plate with the horizontal plate facing the same side and the upper and lower horizontal plates parallel. Has been made. The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A gap of 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is stacked with the foamed resin block inside the vertical wall portion of the lower retaining wall block. And a protrusion projecting from the top of the horizontal plate portion of each retaining wall block located on the upper surface. An intermediate floor slab is provided by concrete placement through a connecting portion as a reinforcing bar. In addition, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, the upper end side is provided with a bolt hole as a long and long hole through which a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is inserted. The upper end side can be fixed to the vertical wall portion by being tightened prior to constructing the intermediate floor slab, and after the intermediate floor slab is constructed, the elongated hole is inserted by being loosened. The fixing bolt is In the hole, the amount corresponding to the vertical width of the gap, is characterized in that it is made possible descent.

  Another aspect of the embankment structure according to the present invention is an embankment structure in which an embankment structure is constructed by stacking foam resin blocks inside a retaining wall constructed in a construction space, and the retaining wall is a vertical wall portion. An L-shaped retaining wall block with a horizontal plate projecting at the lower end is constructed by stacking the horizontal plate with the horizontal plate facing the same side and the upper and lower horizontal plates parallel. Has been made. The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A gap of 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is stacked with the foamed resin block inside the vertical wall portion of the lower retaining wall block. An intermediate floor slab is provided on the upper surface of the light weight embankment, and is provided on the upper surface so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located on the upper surface. The plate portion and the intermediate floor slab are connected via a connecting portion so that the joint portion between them is not separated in the vertical direction and the horizontal direction. Further, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to the both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, a bolt hole for inserting a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is provided on the upper end side, and the fixing bolt constructs the intermediate floor slab. The upper end side can be fixed to the vertical wall portion by being tightened prior to this, while being removed after the intermediate floor slab has been constructed.

  Another aspect of the embankment structure according to the present invention is an embankment structure in which an embankment structure is constructed by stacking foam resin blocks inside a retaining wall constructed in a construction space, and the retaining wall is a vertical wall portion. An L-shaped retaining wall block with a horizontal plate projecting at the lower end is constructed by stacking the horizontal plate with the horizontal plate facing the same side and the upper and lower horizontal plates parallel. Has been made. The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A gap of 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is stacked with the foamed resin block inside the vertical wall portion of the lower retaining wall block. And a protrusion projecting from the top of the horizontal plate portion of each retaining wall block located on the upper surface. An intermediate floor slab is provided by concrete placement through a connecting portion as a reinforcing bar. Further, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to the both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, a bolt hole for inserting a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is provided on the upper end side, and the fixing bolt constructs the intermediate floor slab. The upper end side can be fixed to the vertical wall portion by being tightened prior to this, while being removed after the intermediate floor slab has been constructed.

  In each of the embankment structures, a bolt shaft protrudes from both sides of the upper end of the inner surface of the vertical wall portion, and an insertion hole through which the bolt shaft is inserted is provided on the lower end side of the guide plate. It is preferable that the lower end side of the guide plate can be fixed to the inner surface of the vertical wall portion by screwing and tightening a nut.

  In each embankment structure, a soft sponge may be interposed in the gap in the gap.

A retaining wall block for embankment structure construction according to the present invention (hereinafter referred to as retaining wall block) includes a block main body having an L shape in which a horizontal plate portion projects from a lower end portion of a vertical wall portion , The block body is stacked so that the vertical wall portions are stacked one above the other, and the lower end side of the guide plate extending above the upper end of the vertical wall portion is located on both sides of the upper end of the inner surface of the vertical wall portion. Passing portions are provided on both sides of the lower end of the vertical wall portion so that the upper end side of the guide plate fixed to the vertical wall portion positioned at the lower stage can pass upward. The outer surface of the passage portion is formed as a vertical surface that can abut on the outer vertical surface on the upper end side of the guide plate, and the upper end side is screwed to the vertical wall portion. Bolt holes for inserting the fixing bolts are provided In the retaining wall block, the bolt hole may be formed as a long hole that is long in the vertical direction.

  The construction method of the embankment structure according to the present invention (hereinafter referred to as construction method) is a construction method of the embankment structure in which the embankment structure is constructed by stacking foam resin blocks inside the retaining wall constructed in the construction space. The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion protrudes from a lower end portion of a vertical wall portion, the horizontal plate portion is directed to the same side, and upper and lower horizontal plate portions are in a parallel state. The stacking of the retaining wall block is performed by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block. And a horizontal plate portion of the retaining wall block located above is a retaining wall block located below. The foamed resin blocks are stacked on the inside of the vertical wall. An intermediate floor slab is provided on the upper surface of the light weight embankment, and is provided on the upper surface so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located on the upper surface. The intermediate floor slab is connected via a connecting portion so that the joint portion between the two is not separated in the vertical direction and the horizontal direction. Then, when the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending above the upper end of the guide plate is in a fixed state, and the vertical outer surface portion of the upper end side of the guide plate is the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above The lower end side portions are guided in a downward direction in contact with both side portions, and after placing the horizontal plate portion of the retaining wall block located on the horizontal upper surface of the lightweight embankment, the upper end side The upper end side is fixed to the vertical wall portion by tightening a fixing bolt inserted in the upper and lower long holes provided in the upper part, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is It is characterized by loosening.

  Another aspect of the construction method according to the present invention is a construction method for an embankment structure that constructs an embankment structure by stacking foam resin blocks inside a retaining wall constructed in a construction space, and the retaining wall includes: By stacking L-shaped retaining wall blocks with a horizontal plate projecting at the lower end of the vertical wall, with the horizontal plate facing the same side and the upper and lower horizontal plates parallel The stacking of the retaining wall blocks is performed by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block, and Between the vertical wall portions, a vertical width of 5 to 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is located inside the vertical wall portion of the lower retaining wall block. On the horizontal upper surface of a lightweight embankment made up of stacked foam resin blocks Placed on the upper surface of the retaining wall block located on the upper end of the horizontal plate portion so that it is continuous with the connecting portion as a protruding reinforcing bar projecting at the tip of the retaining plate. A floor slab is provided. Then, when the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending above the upper end of the guide plate is in a fixed state, and the vertical outer surface portion of the upper end side of the guide plate is the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above The lower end side portions are guided in a downward direction in contact with both side portions, and after placing the horizontal plate portion of the retaining wall block located on the horizontal upper surface of the lightweight embankment, the upper end side The upper end side is fixed to the vertical wall portion by tightening a fixing bolt inserted in the upper and lower long holes provided in the upper part, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is It is characterized by loosening.

  Another aspect of the construction method according to the present invention is a construction method for a banking structure that builds a banking structure by stacking foam resin blocks inside a retaining wall constructed in a construction space, and the retaining wall includes: By stacking L-shaped retaining wall blocks with a horizontal plate projecting at the lower end of the vertical wall, with the horizontal plate facing the same side and the upper and lower horizontal plates parallel The stacking of the retaining wall blocks is performed by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block, and Between the vertical wall portions, a vertical width of 5 to 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is located inside the vertical wall portion of the lower retaining wall block. A horizontal top of a lightweight embankment consisting of stacked foam resin blocks An intermediate floor slab is provided on the upper surface so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located on the upper surface. In this case, the horizontal plate portion and the intermediate floor slab are The connecting portions are connected via a connecting portion so as not to be separated in the vertical direction and the horizontal direction. Then, when the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending above the upper end of the guide plate is in a fixed state, and the vertical outer surface portion of the upper end side of the guide plate is the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above The lower end side portions are guided in a downward direction in contact with both side portions, and after placing the horizontal plate portion of the retaining wall block located on the horizontal upper surface of the lightweight embankment, the upper end side The upper end side is fixed to the vertical wall portion by tightening the fixing bolt inserted through, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is removed. is there.

  Another aspect of the construction method according to the present invention is a construction method for a banking structure that builds a banking structure by stacking foam resin blocks inside a retaining wall constructed in a construction space, and the retaining wall includes: By stacking L-shaped retaining wall blocks with a horizontal plate projecting at the lower end of the vertical wall, with the horizontal plate facing the same side and the upper and lower horizontal plates parallel The stacking of the retaining wall blocks is performed by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block, and Between the vertical wall portions, a vertical width of 5 to 50 mm is formed, and the horizontal plate portion of the upper retaining wall block is located inside the vertical wall portion of the lower retaining wall block. A horizontal top of a lightweight embankment consisting of stacked foam resin blocks The concrete is placed through a connecting portion as a protruding reinforcing bar projecting at the tip so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located on the upper surface. An intermediate floor slab is provided. Then, when the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending above the upper end of the guide plate is in a fixed state, and the vertical outer surface portion of the upper end side of the guide plate is the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above The lower end side portions are guided in a downward direction in contact with both side portions, and after placing the horizontal plate portion of the retaining wall block located on the horizontal upper surface of the lightweight embankment, the upper end side The upper end side is fixed to the vertical wall portion by tightening the fixing bolt inserted through, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is removed. is there.

The present invention has the following excellent effects.
(1) Since the embankment structure according to the present invention constructs a retaining wall by stacking retaining wall blocks, each retaining wall is different from the conventional construction that constructs an embankment structure using one retaining wall block. The block can be reduced in size by reducing its height. Therefore, each retaining wall block can be transported without restrictions on transportation, and the handling thereof is easy, and even a retaining wall having a high height can be easily constructed.

(2) According to the present invention, the lower end side of the guide plate that protrudes above the upper end of the vertical wall portion is fixed to both side portions of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block. Therefore, when stacking other retaining wall blocks on the required retaining wall block, the retaining wall block is brought into contact with the vertical outer surface portion on the upper end side of the guide plate while the vertical inner surface of the vertical wall portion is in contact therewith. By suspending, the outer surfaces of the vertical wall portions of the upper and lower retaining wall blocks can be naturally aligned in a vertical state without checking the outer surface side of the retaining wall block.

  Therefore, when performing road widening work in mountainous areas, for example, it is not necessary to perform dangerous conventional construction on the outside of the retaining wall, such as building blocks on the dangerous valley side and performing block stacking work. Since only the work on the inside of the wall is required, the safety and good workability of block stacking construction can be ensured. Moreover, since construction can be performed inside the retaining wall to be constructed, there is no need to assemble a scaffold outside the retaining wall, and the construction cost can be greatly reduced.

(3) The present invention relates to the lower end of the guide plate by screwing and fastening a fixing bolt that passes through a bolt hole provided on the upper end side of the guide plate to a vertical wall portion of the suspended upper retaining wall block. The side can be fixed to the vertical wall, and the fixing bolt can be loosened or removed. A gap having a vertical width of 5 to 50 mm is formed between the upper and lower retaining wall blocks in the stacked state.

  Therefore, according to the present invention, when constructing an intermediate floor slab connected to the horizontal plate portion of the installed retaining wall block, the construction height of the horizontal plate portion is accurately set by temporarily fixing the fixing bolt. In this state, the intermediate floor slab can be accurately connected to the horizontal plate portion.

  After the intermediate floor slab is hardened, the lightweight embankment is creeped by loosening the fixing bolt (if the bolt hole through which the fixing bolt is inserted is formed as a long long hole up and down) or removing it. The downward sinking of the retaining wall block as it is compressed by the phenomenon can be absorbed without difficulty by the gap. At this time, in order to integrate the intermediate floor slab and the horizontal plate part via a connecting part such as a protruding reinforcing bar, the retaining wall block and the intermediate floor slab are integrated when compressed in this way. As a result, the whole can sink without difficulty. Therefore, the strength stability of the embankment structure can be ensured over a long period of time.

  Therefore, according to the present invention, even when the lightweight embankment is compressed by the creep phenomenon, the upper retaining wall block does not hit the upper end of the vertical wall portion of the lower retaining wall block. There is no risk of the top end of the wall cracking or chipping, and the verticality of the retaining wall can be increased without fear of causing collapse of the embankment structure by bending the block at the joint of the upper and lower retaining wall blocks. It can be secured stably over a long period of time.

  Then, by temporarily fixing the fixing bolt as described above, the vertical state of the vertical wall portion of the retaining wall block stacked until the horizontal plate portion is connected to the intermediate floor slab as described above. While being able to hold | maintain correctly, the fall of this piled retaining wall block can be prevented, and a banking structure can be constructed | assembled accurately and safely.

(4) The stacked retaining wall blocks are integrated and integrated with the intermediate floor slab through the connecting parts such as the protruding bars, so that during construction, during strong winds and earthquakes Sometimes when an outward horizontal force is applied, or when an external force is applied to push the retaining wall block outward when the lightweight embankment is compressed, the intermediate slab and the lightweight embankment placed thereon The weight of the material acts as a counterweight, resists these forces, prevents the retaining wall block from moving or falling, and allows construction to be performed safely.

(5) When the bolt hole provided on the upper end side of the guide plate is formed as a long hole that is long in the vertical direction, the retaining wall block located above is only required to loosen the fixing bolt after constructing the intermediate floor slab. Can be freely moved downward along with the sinking of the lightweight embankment, so that the construction efficiency can be improved without requiring the trouble of removing the fixing bolt.

(6) If a configuration is adopted in which a bolt shaft protrudes on both sides of the upper end of the inner surface of the vertical wall portion and an insertion hole for inserting the bolt shaft is provided on the lower end side of the guide plate, the guide plate is vertically When fixing to the wall portion, by inserting the bolt shaft through the insertion hole provided on the lower end side thereof, the operation of positioning and fixing the guide plate to the vertical wall portion can be facilitated.

(7) When the retaining wall block according to the present invention is used, the embankment structure can be constructed with good workability and safety while reducing the construction cost.

(8) When the construction method according to the present invention is used, the embankment structure can be constructed with good workability and safety while reducing the construction cost.

(9) In the embankment structure according to the present invention, when a soft sponge is interposed in the gap, ultraviolet light can be prevented from entering into the embankment structure through the gap of the constructed embankment structure. As a result, ultraviolet deterioration of the foamed resin block can be suppressed, and the strength stability of the embankment structure can be improved.

  In FIG. 1, the embankment structure 1 according to the present invention is applied to road widening work in a mountainous area, and one side of the construction space 3 shown in FIG. A retaining wall 9 is constructed by stacking retaining wall blocks 7 on a base 6 provided on the bottom 5, and a space 10 between the retaining wall 9 and the inclined land 2 is formed as a rectangular parallelepiped block 11a. The embankment structure A can be constructed by filling the foamed resin block 11 with a lightweight embankment 12 formed by stacking the foamed resin blocks 11.

  In this embodiment, the retaining wall 9 is constructed by stacking the retaining wall blocks 7 in three stages. The retaining wall blocks 7, 7, and 7 stacked in three stages are hereinafter distinguished from the lower retaining wall block 7a, the middle retaining wall block 7b, and the upper retaining wall block 7c. The foamed resin block 11 is composed of a synthetic resin foam, and a foamed polystyrene block, a foamed polyurethane block, a foamed polyethylene block, or the like can be used. A foamed polystyrene block is particularly preferable from the viewpoint of construction economy. The rectangular parallelepiped block 11a is formed as a rectangular plate having a height and width of 2 m, 1 m, and 50 cm, respectively, as shown in FIG. 3, for example.

  The middle retaining wall block 7b is formed as a precast concrete block and, as shown in FIG. 4, has a rectangular plate shape in plan view at the lower end portion of the vertical wall portion 13 having a rectangular plate shape in front view. The horizontal plate portion 15 has an L-shape in which the horizontal plate portion 15 is protruded, and the left and right end surfaces 16 and 16 of the horizontal plate portion 15 are held inward from the left and right end surfaces 19 and 19 of the vertical wall portion 13. . The outer surface 21 (surface opposite to the inclined land 2) 21 of the vertical wall portion 13 is formed so as to exhibit an appearance that melts into the natural environment by forming a pattern or attaching a natural stone. Good.

  The vertical wall portion 13 is provided with vertical reinforcing ribs 23, 23, 23 projecting vertically and vertically on both side portions and the central portion of the vertical inner surface (surface on the inclined land 2 side) 22 of the wall portion main body 13a. The horizontal plate portion 15 is formed by projecting lateral reinforcing ribs 26, 26, 26 at both side portions and the central portion of the upper surface 25 of the plate portion main body 15a, and the vertical reinforcing rib 23 at both side portions and the central portion. The lateral reinforcing ribs 26 are connected in series. Then, as shown in FIG. 4, in the upper part in the vertical direction of the vertical reinforcing ribs 23a, 23a on both sides, the middle retaining wall blocks 7b, 7b arranged side by side are connected to the connecting plate 27 as shown in FIG. The connection recesses 29 and 29 for connection are provided, and the connection inserts 31 and 31 are embedded in the bottom surfaces 30 and 30 of the connection recesses 29 and 29.

  Further, as shown in FIG. 4, a corner reinforcing portion 32 having a triangular cross section is provided at the corner portion formed by the vertical wall portion 13 and the horizontal plate portion 15.

  In this embodiment, as shown in FIG. 4, the end surfaces 33, 33 of the vertical reinforcing ribs 23a, 23a on both sides are formed as inclined surfaces directed inward of the vertical wall portion 13 and the horizontal plate portion. The reason why the left and right end surfaces 16 and 16 are positioned inwardly of the left and right end surfaces 19 and 19 of the vertical wall portion 13 is to meet the curve construction in the section where the road curves as shown in FIG. It is to do. In FIG. 6, the curve construction state at the maximum angle is shown. The connecting plate 27 used for the curve construction is bent according to the curve, for example.

  Further, as shown in FIGS. 4 and 7A, drain holes 35, 35 are provided in the lower end portion of the vertical wall portion 13 so as to be located at the approximate center between the adjacent vertical reinforcing ribs 23, 23. The drain hole 35 has an inner end communicating with a lateral recess 36 between the adjacent lateral reinforcing ribs 26. Further, as shown in FIGS. 4 and 7 (B), on both sides of the base end portion 37 of the horizontal plate portion 15 (on the lower end both sides of the vertical wall portion 13), the corner reinforcing portions 32 are vertically Passing portions 39, 39 as rectangular guide holes 39a, 39a penetrating in the direction are provided, and the inner surface 40 of the guide hole 39a on the vertical wall portion 13 side is the inner surface of the vertical wall portion 13. (Inner surface of the wall main body) 22 is formed on the same vertical plane.

  Further, as shown in FIGS. 8 to 9, a lower end side 43 of a guide plate 42 extending above the upper end 41 of the vertical wall portion 13 is fixed to both sides of the upper end of the inner surface 22 of the vertical wall portion 13. . Therefore, as shown in FIGS. 4 and 9, inserts 45, 45, 45, 45 are embedded in the upper and lower sides of the inner surface 22 in two upper and lower stages, and one end of the screw shaft 46 is inserted into each of the inserts 45. The other end portion 49 is projected from the inner surface 22 by screwing the portion 47.

  In this embodiment, the guide plate 42 is formed in a rectangular plate shape that is long in the vertical direction, as shown in FIG. 10, and the lower screw shafts 46 and 46 are inserted into the lower end side 43 thereof. Insertion holes 51 and 51 are provided. Then, as shown in FIG. 9, the lower end side 43 is fixed to the vertical wall portion 13 by screwing and tightening nuts 52, 52 to the screw shafts 46, 46 inserted through the insertion holes 51, 51. A side 53 projects vertically above the upper end 41 of the vertical wall 13. A bolt hole 56 is provided on the upper end side 53 of the guide plate 42. In the present embodiment, the bolt hole 56 is formed as a long hole 56a which is vertically long as shown in FIG. 10, and as shown in FIG. 9, a fixing bolt 57 inserted through the long hole 56a is stacked. The upper retaining wall block 7c can be screwed into the hole inner surface 40 of the guide hole 39a provided in the upper retaining wall block 7c or the insert 59 embedded in the inner surface 22 of the vertical wall portion 13, and the fixing bolt 57 is tightened. Thus, the upper end side 53 is fixed to the upper retaining wall block 7c.

  As will be described later, the upper end side 53 can be inserted through the guide hole 39a from the bottom to the top while the vertical outer surface portion 60 abuts the hole inner surface 40.

  If the dimensions of each part of the guide plate 42 are illustrated based on FIG. 10, the width dimension L1 is set to 50 mm, the vertical length L2 is set to 350 mm, and the thickness L3 is set to 10 mm. In addition, the vertical length of the long hole 56a is 30 to 50 mm, and in this embodiment, the upper and lower circular holes 61 and 62 are arranged so that the fixing bolt 57 (FIG. 9) can be lowered within a range of 30 mm. The center distance L4 is set to 30 mm. The width of the long hole 56a is set to about 14 mm, which is slightly larger than the diameter of the fixing bolt 57.

  If the dimensions of the main part of the middle retaining wall block 7b are illustrated based on FIG. 4, the horizontal wall width L5 of the vertical wall 13 is set to 2000 mm, the height L6 is 3000 mm, and the horizontal length The length L7 is set to 1500 mm. In the present embodiment, the height L6 of the vertical wall portion 13 is set to be as large as 3000 mm, but this reduces the number of stacking steps of the retaining wall block 7 for constructing the retaining wall 9 as much as possible, This is to improve the construction efficiency and reduce the construction cost by reducing the construction process for installing the floor slab.

  Further, as shown in FIGS. 4 and 11, the distal end surface 63 of the horizontal plate portion 15 is, for example, at the distal end position of the lateral reinforcing ribs 26, 26, 26, and the proximal end of the connecting portion 65 as a protruding reinforcing bar 65a. An insert 67 for screwing the portion 66 is embedded.

  FIG. 12 shows the retaining wall block 7a located in the lower stage, in which the insert 67 for screwing the proximal end portion 66 of the protruding reinforcing bar 65 and the passage portion 39 are not provided, and the horizontal plate portion 15 Except for the point that a connecting member 69 that can function as a counterweight is provided so as to cross the upper surface of the tip portion, it has substantially the same configuration as the retaining wall block 7b in the middle stage.

  More specifically, in the present embodiment, the connecting member 69 is formed as a square bar made of concrete having a square cross section, and the top ends of the three lateral reinforcing ribs 26, 26, 26 are arranged. In a state of being placed on the portions 70, 70, 70, both end portions 71, 71 are fixed to the left and right reinforcing ribs 26 a, 26 a with bolts 72. As shown in FIG. 12B, the screw shaft portion 73 at the lower end of the bolt 72 is screwed into an insert 75 embedded in the top end portions 70, 70 of the reinforcing ribs 26a, 26a on both sides. The connecting member 69 is fixed to the horizontal plate portion 15 by tightening. In this state, the distal end 36a of the lateral recess 36 between the adjacent lateral reinforcing ribs 26, 26, 26, 26 is in an open state. Parts similar in configuration to the middle retaining wall block 7b are given the same reference numerals as above.

  For example, the dimensions of the main part of the lower retaining wall block 7a are set such that the horizontal wall width L8 of the vertical wall portion is set to 1900 mm, the height L9 is set to 1500 mm, and the horizontal length L10 is set to 750 mm. Has been.

  Unlike the middle retaining wall block 7b and the upper retaining wall block 7c, the lower retaining wall block 7a is not connected to an intermediate floor slab 76 described later. This is because the inner and outer width of the bottom portion 5 (FIG. 2) of the construction space 3 is made as narrow as possible, thereby reducing the amount of excavation of the natural ground for constructing the embankment structure 1 as much as possible and improving construction efficiency and construction cost. This is to reduce the amount of the foamed resin block 11 filled into the space 10 between the retaining wall 9 and the inclined land 2 to improve the construction efficiency and reduce the construction cost. For this purpose, the lower retaining wall block 7a installed on the foundation portion 6 must be able to stably stand on its own so as not to fall down due to a horizontal force such as wind. Therefore, in this embodiment, the height L9 of the vertical wall portion 13 and the horizontal plate portion are set so as to ensure stable independence of the retaining wall block 7 while minimizing the protruding length of the horizontal plate portion 15. The ratio of the horizontal length L10 of 15 is set to 2: 1 as described above.

  FIG. 13 shows the retaining wall block 7c located in the upper stage, and the difference from the configuration of the middle retaining wall block 7b is that the cap concrete part 110 is formed at the upper end portion of the vertical wall part 13 as described later. In terms of formation, the upper ends 79, 79, 79 of the vertical reinforcing ribs 23, 23, 23 are located below the upper end 80 of the vertical wall portion 13. Parts similar in configuration to the middle retaining wall block 7b are given the same reference numerals as above. The height of the vertical wall portion 13 of the upper retaining wall block 7c is insufficient from the upper end 41 of the vertical wall portion 13 of the middle retaining wall block 7b in consideration of the design height of the retaining wall 9. Is set to compensate.

  In the example of the dimensions of the main part of the upper retaining wall block 7c, the horizontal wall width L11 of the vertical wall portion 13 is set to 1900 mm, the height L12 is 1500 mm, and the horizontal length L13 is 750 mm. Is set.

  FIG. 1 and FIG. 14 show the embankment structure 1 constructed using the retaining wall blocks 7a, 7b, and 7c having such a configuration. To construct the embankment structure 1, the following construction method is shown. by. That is, first, as shown in FIG. 2, a construction space 3 is formed in which one side portion is a cut slope 2. The width of the lower end bottom portion 82 for installing the lower retaining wall block 7a in the construction space 3 is set to about 1500 mm. The base portion 6 is formed in a width portion of about 750 mm located on the inclined land 2 side.

  Thereafter, as shown in FIG. 15, the lower retaining wall block 7 a is placed on the base portion 6 with the horizontal plate portion 15 projecting toward the inclined land 2. Since the ratio of the height of the vertical wall portion 13 to the protruding length of the horizontal plate portion 15 is set to about 2 to 1, the lower retaining wall block 7a can be stably supported.

  As shown in FIG. 16, the lower retaining wall block 7 a is sequentially placed in the length direction of the base portion 6 with the end surfaces 19 and 19 of the vertical wall portions 13 and 13 in contact with each other as shown in FIG. 16. The retaining wall blocks 7 a and 7 a are connected to each other via the connecting plate 27. As shown in FIG. 5, the connection is made by fitting both side portions 83, 83 of the connection plate 27 into the adjacent connection recesses 29, 29, and through the insertion holes 85, 85 provided in the both side portions 83, 83. The bolts 86 and 86 are inserted and screwed into the inserts 31 and 31 and tightened. Then, the crushed stone 87 is filled at the height of the connecting member 69 in the lateral recess 36 between the adjacent lateral reinforcing ribs 26, 26 as shown in FIG. The crushed stone 87 and the connecting member 69 thus filled serve as a counterweight for the horizontal plate portion 15, and the lower retaining wall block 7 a installed on the base portion 6 falls down due to a horizontal force such as wind. Is effectively prevented. Thereby, the lower retaining wall 89 as shown in FIG. 16 is constructed. After the lower retaining wall portion 89 is constructed in this way, immediately after the lower retaining wall block 7a is installed on the foundation portion 6, or the lower retaining wall block 7a is suspended on the foundation portion 6. Prior to this, as shown in FIGS. 8 and 16, the vertical outer surface portion 90 on the lower end side 43 of the guide plate 42 is fixed to the upper end both sides 88 and 88 of the vertical inner surface 22 of the vertical wall portion 13. As shown in FIGS. 8 to 9, the upper and lower screw shafts 46, 46 are inserted through the insertion holes 51, 51 (FIG. 10) provided on the upper and lower sides of the lower end side 43 of the guide plate 42. The nuts 52 and 52 are screwed onto the screw shafts 46 and 46 inserted through the insertion holes 51 and 51 and tightened. In this state, as shown in FIGS. 8 to 9, the upper end side 53 of the guide plate 42 protrudes above the upper end 41 of the vertical wall portion 13, and the outer surface portion 60 exhibits a vertical surface. In this embodiment, it protrudes upward by about 175 mm.

  Thereafter, as shown in FIG. 17A, the foamed resin blocks 11 are vertically and horizontally arranged and stacked in the space 10 between the lower retaining wall 89 constructed in this way and the inclined land 2. A lower lightweight bank 12a can be formed. When forming the lightweight embankment 12a, in this embodiment, as shown in FIG. 17B, the vertical recess 92 between the adjacent vertical reinforcing ribs 23 and 23 has a trapezoidal cross section and is vertically A trapezoidal foamed resin block 11 extending in the direction is inserted. At that time, the horizontal upper surface 94 of the foamed resin block 11A located at the upper end is formed as a horizontal plane protruding about 20 mm above the upper end 41 of the vertical wall portion 13. The height of the foamed resin blocks 11 to be stacked is adjusted so that a protruding state of about 20 mm can be obtained. The inclined gap 93 between the foamed resin block 11 and the slope 2 is filled with crushed stone 87 along the slope 2.

  Then, as shown in FIG. 18, the horizontal plate portion 15 of the middle retaining wall block 7b is placed on the upper surface 94. This construction is performed as follows.

  First, as shown in FIG. 19, the protruding upper end sides 53, 53 of the left and right guide plates 42, 42 are inserted into the guide holes 39a, 39a provided on both sides of the middle retaining wall block 7b from below. The middle retaining wall block 7b is gradually suspended while the vertical outer surface portion 60 of the upper end side 53 is brought into contact with the hole inner surface 40 of the guide hole 39a. Since the outer surface portion 60 and the hole inner surface 40 are formed as the same vertical surface, the vertical retaining wall block 7b is secured by the guide action of the guide plates 42, 42. Can be hung. Accordingly, as shown in FIGS. 20 to 21, the outer surface 21 of the vertical wall portion 13 of the middle retaining wall block 7b is naturally flush with the outer surface 21 of the vertical wall portion 13 of the lower retaining wall block 7a. In this state, the horizontal plate portion 15 is placed on the horizontal upper surface 94. In this state, a gap having a vertical width of about 5 to 50 mm is formed between the upper end 41 of the vertical wall portion 13 of the lower retaining wall block 7a and the lower end 95 of the vertical wall portion 13 of the middle retaining wall block 7b. G. In this embodiment, a gap G of about 20 mm is formed.

  In this state, when the fixing bolt 57 is tightened and the guide plate 42 and the intermediate retaining wall block 7b are temporarily fixed, the horizontal plate 15 is connected to the intermediate floor slab 76 as will be described later. The vertical state of the vertical wall portion 13 of the middle retaining wall block 7b can be correctly held, and the stacked middle retaining wall block 7b can be prevented from falling. In addition, the construction height of the horizontal plate portion 15 of the middle retaining wall block 7b can be accurately set and held.

  According to such construction procedure, as shown in FIG. 22, the middle retaining wall block 7b is brought into contact with the left and right end surfaces 19, 19 of the adjacent vertical wall portions 13, 13 in the extending direction of the lower retaining wall 89. It is installed in a contact state, and the adjacent middle retaining wall blocks 7 b and 7 b are connected to each other by a connecting plate 27.

  In this connection, in the same manner as shown in FIG. 5, the both side portions 83, 83 of the connection plate 27 are fitted into the adjacent connection recesses 29, 29, and bolts 86 are inserted through the both side portions 83, 83. , 86 are screwed into the inserts 31, 31 embedded in the bottom surface of the connecting recess 29 and tightened. After the middle retaining wall 96 is constructed in this way, as shown in FIG. 11, each insert 67 embedded in the front end surface 63 of the horizontal plate 15 has a protrusion having a length of about 40 cm, for example. The proximal end portion 66 of the reinforcing bar 65 is screwed so that the protruding reinforcing bar 65 protrudes horizontally.

  Thereafter, as shown in FIG. 22, appropriate reinforcement 97 is placed on the horizontal upper surface 94, and concrete is placed at the height of the upper surface 99 of the lateral reinforcing rib 26, and FIGS. 23 to 24, FIG. 1, FIG. 14 is constructed. The intermediate floor slab 76 is integrated with the horizontal plate portion 15 with high accuracy through the protruding reinforcing bar 65a in a state where the guide plate 42 and the middle retaining wall block 7b are temporarily fixed as shown in FIG. Built. After the intermediate floor slab 76 is cured to an extent that does not hinder the operation of laying the foamed resin block 11 on the upper surface 100, the fixing bolt 57 is loosened as shown in FIG. The fixing bolt 57 may be removed from the long hole 56a as shown in FIG. In the state where the intermediate floor slab 76 is cured in this way, the joint 98 between the intermediate floor slab 76 and the horizontal plate portion 15 is not separated in the vertical direction and the horizontal direction. Further, as shown in FIG. 23, the crushed stone 87 is filled in the lateral recess 36 between the lateral reinforcing ribs 26 provided on the horizontal plate portion 15.

  Thereafter, the foamed resin block 11 is arranged vertically and horizontally in the space portion 10 between the constructed retaining wall portion 96 and the inclined land 2 on the horizontal series of upper surfaces 101 of the horizontal plate portion 15 and the intermediate floor slab 76. By laying and stacking, an intermediate lightweight bank 12b is formed as shown in FIG. In the present embodiment, when the intermediate lightweight bank 12b is formed, as shown in FIG. 27 (B), the cross section has a trapezoidal shape in the vertical recess 92 between the adjacent vertical reinforcing ribs 23, 23. A trapezoidal foamed resin block 11 extending in the vertical direction is filled. At that time, the upper surface 103 of the foamed resin block 11B located at the upper end is formed as a horizontal plane protruding about 20 mm above the upper end 41 of the vertical wall portion 13. The inclined gap 93 between the foamed resin block 11 and the slope 2 is filled with crushed stone 87 along the slope 2.

  In the process of stacking the foamed resin blocks 11 as described above, when an appropriate height is reached, an operator rides on the block and, as shown in FIG. 28, the upper end of the vertical inner surface 22 of the vertical wall portion 13. The lower end sides 43 and 43 of the guide plates 42 and 42 are fixed to the side portions 88 and 88 in the same manner as described above. As shown in FIGS. 8 to 9, the fixing is performed by screws projecting above and below the both side portions in the insertion holes 51 and 51 provided above and below the lower end side 43 of the guide plate 42. The shafts 46 and 46 are inserted, and the nuts 52 and 52 are screwed and tightened to the screw shafts 46 and 46 inserted through the insertion holes 51. In this state, the upper end side 53 of the guide plate 42 protrudes above the upper end 41 of the vertical wall portion 13, and the vertical outer surface portion 60 (FIG. 28B) exhibits a vertical surface. In this embodiment, it protrudes upward by about 175 mm.

  Then, as shown in FIG. 29, by installing the upper retaining wall block 7c on the horizontal upper surface 107 of the upper end foamed resin block 11C according to the same construction procedure as in the middle retaining wall block 7b, The retaining wall 109 is constructed. More specifically, first, the projecting upper end sides 53, 53 of the left and right guide plates 42, 42 are placed below the guide holes 39a, 39a provided on both sides of the upper retaining wall block 7c. The upper retaining wall block 7c is gradually suspended while the vertical outer surface portion 60 of the upper end side 53 is in contact with the hole inner surface 40 of the guide hole 39a (similar to that shown in FIG. 19). Since the outer surface portion 60 and the hole inner surface 40 are formed as a series of vertical surfaces, the upper retaining wall block 7c is suspended with its verticality secured by the guide action of the guide plates 42, 42. Can be lowered. As a result, the outer surface 21 of the vertical wall portion 13 of the upper retaining wall block 7c is naturally flush with the outer surface 21 of the vertical wall portion 13 of the middle retaining wall block 7b. It will be in the state mounted in the said horizontal upper surface 107. FIG. In this state, a gap G having a vertical width of about 5 to 50 mm between the upper end 41 of the vertical wall portion 13 of the middle retaining wall block and the lower end 95 of the vertical wall portion 13 of the upper retaining wall block 7c. In this embodiment, a gap G of about 20 mm is formed.

  In this state, when the fixing bolt 57 is tightened to temporarily fix the guide plate 42 and the upper retaining wall block 7c, the construction height of the horizontal plate portion 15 of the upper retaining wall block 7c is the same as described above. Is accurately set and held.

  With such a construction procedure, as shown in FIG. 30, the upper retaining wall block 7 c and the left and right end surfaces 19, 19 of the adjacent vertical wall portions 13, 13 are arranged in the extending direction of the middle retaining wall portion 96. The upper retaining wall blocks 7c and 7c adjacent to each other are connected by a connecting plate 27. In this connection, in the same manner as shown in FIG. 5, the both side portions 83, 83 of the connection plate 27 are fitted into the adjacent connection recesses 29, 29, and bolts 86 are inserted through the both side portions 83, 83. , 86 are screwed onto and tightened into the inserts 31, 31 embedded in the bottom surface of the connecting recess. After constructing the upper retaining wall portion 109 in this way, each insert 67 embedded in the front end surface 63 of the horizontal plate portion 15 has a length of about 40 cm, for example, as shown in FIG. The proximal end portion 66 of the protruding reinforcing bar 65 is screwed so that the protruding reinforcing bar 65 protrudes horizontally.

  Thereafter, as shown in FIG. 30, a bar arrangement 97 is appropriately made on the horizontal upper surface 107, and concrete is placed at the height of the upper surface 99 of the lateral reinforcing rib 26, and FIGS. 31 to 32, FIGS. 14, an intermediate floor slab 76 integrated with the horizontal plate portion 15 is constructed. After the intermediate floor slab 76 has been cured as required, the fixing bolt 57 is loosened as shown in FIG. The fixing bolt 57 may be removed from the long hole 56a. Further, crushed stone 87 is filled in the lateral recesses 36 between the lateral reinforcing ribs 26 provided on the horizontal plate portion 15.

  Thereafter, the foamed resin block 11 is arranged vertically and horizontally in the space portion 10 between the upper retaining wall portion 7c constructed and the inclined land 2 on a series of horizontal upper surfaces 101 of the horizontal plate portion 15 and the intermediate floor slab 76. By placing and stacking, an upper lightweight bank 12c is formed as shown in FIGS. In forming the upper lightweight bank 12c, in this embodiment, as shown in FIG. 33 (B), the vertical recess 92 between the adjacent vertical reinforcing ribs 23 and 23 has a trapezoidal cross section. Then, a trapezoidal foamed resin block 11 extending in the vertical direction is inserted. The inclined gap 93 between the foamed resin block 11 and the slope 2 is filled with crushed stone 87 along the slope 2.

  The intermediate floor slabs 76, 76 formed as described above are intended to stabilize the stacked state by unevenness correction in the stacked state of the foamed resin block 11, and to reinforce the lightweight embankment 12 by dispersion of the overlay load. It is provided. By such intermediate floor slabs 76, the stability of the whole embankment structure can be maintained over a long period of time. Further, as will be described later, the intermediate floor slabs 76 and 76 are water whose entire upper surface guides the groundwater of the embankment structure 1 (such as spring water from the natural ground) to the drain hole 35 in a dispersed state. Since it can function as the guide surface 136, an increase in water pressure in the embankment structure 1 can be prevented.

  And the cap concrete part 110 is constructed | assembled by on-site construction according to a conventional method at the upper end of the upper retaining wall part 109, The upper end surface 111 (namely, upper end surface of the retaining wall 9) of the cap concrete part 110 becomes a horizontal surface. It is formed. An upper floor slab 115 is provided on the upper surface 113 of the foam resin block 11C at the upper end stacked in contact with the inner surface 112 of the cap concrete part 110 formed in this way, and the upper floor slab 115 is provided on the upper surface on the outer end side of the upper floor slab 115. Base concrete 116 is formed.

  In the present embodiment, the guard rail 117 is constructed along the edge of the constructed retaining wall 9. For this purpose, a guardrail foundation block 119 shown in FIGS. 33A, 1, and 14 is laid on the foundation concrete 116. The base block 119 has a standing wall portion 121 erected near the outer end portion of the bottom plate portion 120, and a guard rail support portion 122 (FIG. 14) is provided on the standing wall portion 121. After the bottom slab portion 120 of the foundation block 119 having such a configuration is placed on the foundation concrete 116 via a floor mortar, the foundation block 119 is placed on the bottom slab portion 120 and the upper floor slab 115. The layer is backfilled in layers up to the height of the upper surface 125 of the standing wall 121. The foundation block 119 is prevented from overturning by the loading load by the backfilling portion 126. An upper portion of the backfill portion 126 is formed with a roadbed 127 and asphalt pavement 129 as finishing work, and a road surface 130 is formed. Further, the lower end portion of the support 131 for fixing the guard rail 117 is fixed to the guard rail support portion 122 of the base block 119.

  When the embankment structure 1 having such a configuration is used, as shown in FIGS. 34 and 1, a gap G is formed between the upper and lower retaining wall blocks 7 and 7, and is provided on the upper end side 53 of the guide plate 42. Since the fixing bolt 57 inserted through the elongated hole 56a is in a loosened state, the retaining wall block positioned on the upper side can freely descend within the range of the vertical length of the elongated hole 56a. As a result, when the lightweight embankment 12 is compressed by the creep phenomenon due to the overload, the integrated horizontal plate portion 15 and the entire intermediate floor slab 76 can be subsidized uniformly and reasonably. The sinking downward can be absorbed in the range of the gap G. For this reason, the retaining wall block 7 can be prevented from being damaged or the retaining wall block 7 can be prevented from being weakened by rotating the retaining wall block 7 inward, and the verticality of the retaining wall 9 can be stabilized over a long period of time. Can be secured.

  If the gap G is not provided, as the lightweight embankment 12 is gradually compressed by the creep phenomenon, the upper end of the retaining wall block located on the lower side is raised by the retaining wall block located on the upper side. May be pushed and cracked or chipped, resulting in a decrease in strength of the embankment structure 1. In addition, at the joint portion of the upper and lower retaining wall blocks, the embankment structure 1 collapses by bending the upper and lower retaining wall blocks into a generally U shape as a result of the inward rotation of the upper retaining wall block. There is a risk of inviting.

  In each retaining wall block 7, 7, 7, a drain hole 35 is formed in the lower end portion of the vertical wall portion 13 between the lateral reinforcing ribs 26, 26. Water can be drained, and water can be prevented from staying inside the retaining wall 9 due to its drainage. Speaking of the drainage hole 35 provided in the lower retaining wall block 7a, as shown by the arrow in FIG. 35, the crushed stone interposed between the inclined land 2 and the portion 133 on the inner end side of the lightweight embankment 12 The layer 135 functions as a drainage part for flowing down groundwater (spring water from a natural ground) and is finally discharged to the outside through the drainage hole 35. In this embodiment, the water is discharged to the outside through the drain pipe 134 connected to the drain hole 35. As for the middle retaining wall block 7b and the upper retaining wall block 7c, as shown by arrows in FIGS. 36 and 37, the upper surface of the intermediate floor slab 76 and the upper surface of the horizontal plate portion 15 are water guide surfaces. Since ground 136 is formed, groundwater in the embankment structure 1 such as spring water from a natural ground is guided to the water guide surface 136 and is discharged to the outside through the drain hole 35. Such drainage action can ensure the safety of the retaining wall 9.

  The present invention is by no means limited to those shown in the above-described embodiments, and it goes without saying that various design changes can be made within the scope of the claims. One example is as follows.

(1) The embankment structure 1 according to the present invention builds the retaining wall 9 by stacking the retaining wall blocks 7 configured as described above. The retaining wall 9 includes two or more stages of the retaining wall block 7. It is also possible to set the height of the retaining wall to, for example, about 13 m according to the number of stacked stages of the retaining wall block 7. And the height of the vertical wall part 13 of the retaining wall block 7 to be used can be set as large as about 3 m, and the retaining wall block is combined by combining the retaining wall blocks having a high height of the vertical wall part 13. The construction efficiency can be improved and the construction cost can be reduced by, for example, reducing the number of stacking stages and reducing the construction process for installing the intermediate floor slab.

(2) In the embodiment, the stability of the embankment structure A is improved by connecting the retaining wall blocks 7 and 7 adjacent in the lateral direction with the connecting plate 27, but such connection is not necessarily required. .

(3) FIG. 38 shows another embodiment of the guide plate 42, and a circular bolt hole 56 is provided on the upper end side 53 thereof. In this case, after the intermediate floor slab 76 is constructed, the fixing bolt 57 is removed from the guide plate 42 as shown in FIG. Thereby, the retaining wall block located on the upper side can freely move downward as the lightweight embankment sinks.

(4) When fixing the lower end side 43 of the guide plate 42 to the upper end both sides of the vertical inner surface 22 of the vertical wall portion 13 of the retaining wall block 7, the lower end side 43 may be fixed by screwing. .

(5) The lower end side 43 of the guide plate 42 may be fixed to the vertical wall portion when the retaining wall block is manufactured. The protruding reinforcing bars 65 may also be provided in a protruding state on the horizontal plate portion 15 when the retaining wall block 7 is manufactured.

(6) FIG. 40 shows another embodiment of the guide plate 42, and a long bolt hole 56 is provided on the upper end side 53 of the guide plate 42. In this case, when the retaining wall blocks 7 are stacked, the fixing bolts 57 and 57 are loosely screwed to both sides of the lower end of the vertical inner surface of the vertical wall portion 13 of the retaining wall block 7A located above. deep. In this state, when the retaining wall block 7A positioned above is suspended, the shaft portions 139, 139 of the fixing bolts 57, 57 are fitted into the upper end openings 138, 138 of the bolt hole 56 as shown in FIG. Suspend in the state where it is put. And the horizontal board part 15 of this retaining wall block 7A was formed by stacking the foamed resin block 11 in the space part 10 between the vertical wall part 13 of the retaining wall block 7B located below, and the said inclined land 2. 42. The fixed bolt 57 inserted through the bolt hole 56 is then tightened as shown in FIG. 42, after being placed on the horizontal upper surface 140 of the foamed resin block located at the upper end of the embankment 12.

  In this way, by suspending the retaining wall block 7A located above, the position of the retaining wall block 7A in the left-right direction can be determined as required by the loosely screwed fixing bolts 57, 57 on both sides. The suspension of the retaining wall block 7A can be facilitated.

  Then, after the intermediate floor slab 76 is constructed, the fixing bolt 57 is loosened or removed as shown in FIG. 43, so that the retaining wall block 7A located above is moved downward as the lightweight embankment 12 sinks. You can move freely.

(7) In FIGS. 44 to 48 and FIGS. 49 to 53, the horizontal plate portion 15 and the intermediate floor slab 76 are connected via the connecting portion 65 so that the joint portion 98 of both is not separated in the vertical direction and the horizontal direction. Other embodiments are illustrated.

  44 to 48, the connecting portion 65 is configured to have an anchor protrusion 65b protruding from the tip surface 63 of the horizontal plate portion 15. In this case, when the intermediate floor slab 76 is formed by concrete placement, the anchor projection 65b is embedded in the end portion 141 of the intermediate floor slab 76. As a result, the joint portion 98 between the horizontal plate portion 15 and the intermediate floor slab 76 can be connected so as not to be separated in the vertical direction and the horizontal direction.

  For example, as shown in FIGS. 47 and 48, the anchor protrusion 65 b may be provided with a protrusion 142 that bites into the concrete and a recess 143 that bites the concrete.

  49 to 53, the connecting portion 65 is configured to have an anchor recess 65 c that is recessed at the distal end surface 63 of the horizontal plate portion 15. In this case, when the intermediate floor slab 76 is formed by placing concrete, the concrete flows into the anchor recess 65c, and the inflow concrete 145 is integrated with the anchor recess 65c. As a result, the joint portion 98 between the horizontal plate portion 15 and the intermediate floor slab 76 can be connected so as not to be separated in the vertical direction and the horizontal direction.

  For example, as shown in FIGS. 52 and 53, the anchor recess 65c may be provided with a protrusion 146 that bites into the concrete and a recess 147 that bites the concrete.

  54 to 55 show a case where the intermediate floor slab 76 is formed using a precast concrete plate 76a, and the connecting portion 65 in this case includes an upper surface 150 of the tip portion 149 of the horizontal plate portion 15, For example, the precast concrete plate 76a is configured to have a flat connecting member 65d that connects the upper surface 152 of the end portion 151 of the precast concrete plate 76a. In this case, the screw shafts 157 and 157 of the bolts 156 and 156 that pass through the bolt holes 155 and 155 provided in both end portions of the connecting member 65d are screwed into the inserts 153 and 153 embedded in the upper surfaces 150 and 152, respectively. By joining and tightening, the joining portion 98 of the horizontal plate portion 15 and the intermediate floor slab 76 can be connected so as not to be separated in the vertical direction and the horizontal direction.

  In the case where the connecting portion 65 is configured using such a connecting member 65d, the connecting member 65d is not specified to have the flat plate shape. Further, the intermediate floor slab 76 may be formed by placing concrete.

(8) The retaining wall block 7 installed after the second stage, such as the middle retaining wall block 7b or the upper retaining wall block 7c, is also provided with the tip of the horizontal plate part 15 as shown in FIG. A connecting member 69 that may function as a counterweight may be provided across the upper surface.

(9) When the passage portion 39 is formed as the guide hole 39a, the guide hole 39a is not specified as a rectangular hole shape as shown in FIG.

(10) The upper end side 53 of the guide plate 42 is not limited to the flat plate shape as described above, and may be formed, for example, in a U-shaped cross section as shown in FIG. In this case, the front end surfaces of the projecting pieces 159, 159 on both sides become the vertical outer surface portion 60.

(11) FIG. 58 shows a case where a soft sponge 160 is interposed in the gap G of the constructed embankment structure 1. The sponge 160 has a low resilience with a foaming ratio of about 3 to 5 times, which does not hinder the sinking of the upper retaining wall block 7 when the lightweight embankment 12 is compressed by a creep phenomenon. For example, an EPDM foam having a lower hardness than the foamed resin block 11 can be used.
The sponge 160 may be a closed-cell type or an open-cell type. However, when a closed-cell type is used, rainwater can be prevented from entering the embankment structure 1 through the sponge 160. Therefore, it is more preferable.

(12) The vertical width of the gap G formed between the upper and lower vertical wall portions 13, 13 of the upper and lower retaining wall blocks 7, 7 is the upper retaining wall block as the lightweight embankment 12 is compressed by the creep phenomenon. A light weight embankment 12 made of a foamed resin block 11 interposed between the upper and lower horizontal plate portions 15 and 15 of the upper and lower retaining wall blocks 7 and 7. It is set according to the thickness of.
In the present invention, the vertical width of the gap G is set to 5 to 50 mm as described above. The vertical width of the gap G is set to be larger as the thickness of the lightweight embankment 12 is larger, that is, the height of the vertical wall portion 13 of the retaining wall block is higher, and the vertical wall portion is smaller as the vertical width is smaller. In consideration of the height of the vertical wall portion 13 of the retaining wall block 7 normally used in the embankment structure constructed by the present invention, the minimum height is 13 mm (for example, a vertical wall). The height of the portion 13 is as small as about 500 mm) and 50 mm at the maximum (for example, when the height of the vertical wall portion 13 is as large as about 5000 mm).

(13) The embankment structure according to the present invention can be applied to construct a park, a parking lot, and the like in addition to the road widening construction described above.

It is sectional drawing which shows the embankment structure which concerns on this invention. It is sectional drawing which shows the state which provided the base part in the bottom part of construction space. It is a perspective view which shows a foamed resin block. It is a perspective view which shows a middle stage retaining wall block. It is the perspective view and sectional drawing which show the state which connected the retaining wall block of the middle step with the connection board. It is a top view which shows the state which carried out the curve construction of the middle stage retaining wall blocks. It is sectional drawing explaining the drainage hole and guide hole which are provided in the middle retaining wall block. It is a perspective view which shows the state which fixed the lower end side of the guide plate to the inner surface of a vertical wall part. It is sectional drawing which shows the state which connected the middle retaining wall block and the upper retaining wall block mutually via the guide plate. It is a perspective view which shows a guide plate. It is the perspective view and sectional drawing which show the state which protruded at the front end surface of the horizontal board part of the middle stage retaining wall block, and protruded. It is the perspective view and sectional drawing which show the lower retaining wall block. It is a perspective view which shows the upper stage retaining wall block. It is a perspective view explaining the embankment structure which concerns on this invention. It is a side view which shows the state which installed the lower retaining wall block on the foundation part. It is a perspective view which shows the lower retaining wall part constructed by connecting lower retaining wall blocks. It is sectional drawing which shows the state which piled up the foamed resin block in the space part of a lower stage retaining wall part and an inclined ground, and formed the lower lightweight embankment. It is sectional drawing which shows the state which accumulated the retaining wall block of the middle stage on the retaining wall block of the lower stage. It is sectional drawing explaining the process of stacking the middle retaining wall block on the lower retaining wall block. It is sectional drawing which shows the state which connected the lower retaining wall block and the middle retaining wall block via the guide plate. It is a perspective view which shows the connection state. FIG. 6 is a perspective view showing a state in which a bar is placed on the front end side of the horizontal plate portion of the middle retaining wall block after the middle retaining wall is constructed on the lower retaining wall. It is a perspective view which shows the state which continued to the horizontal board part of the middle stage retaining wall block, and constructed | assembled the intermediate | middle floor slab. FIG. It is sectional drawing which shows the state which loosened the fixing volt | bolt which fixes the upper end side of a guide plate to an intermediate retaining wall block. It is sectional drawing which shows the state which removed the fixing bolt. It is sectional drawing which shows the state which piled up the foamed resin block in the space part between an intermediate | middle retaining wall part and sloping ground, and formed the middle stage lightweight embankment. It is a perspective view which shows the retaining wall part of the middle stage constructed by connecting the retaining wall blocks of the middle stage with the guide plate fixed. It is sectional drawing which shows the state which accumulated the upper stage retaining wall block on the middle stage retaining wall block, and constructed the upper stage retaining wall part. It is a perspective view which shows the state where the bar arrangement was carried out at the front end side of the horizontal board part of the upper stage retaining wall block which comprises an upper stage retaining wall part. It is a perspective view which shows the state which continued to the horizontal board part which comprises an upper stage retaining wall part, and constructed the intermediate floor slab. FIG. It is sectional drawing which shows the light weight embankment of the upper stage constructed | assembled by stacking a foam resin block in the space part between an upper stage retaining wall part and an inclined ground with the constructed guard rail. It is sectional drawing which shows the state which loosened the fixing volt | bolt which fixes the upper end side of a guide plate. It is sectional drawing explaining the drainage effect | action by the drainage hole provided in the lower retaining wall block. It is sectional drawing explaining the drainage effect | action in the drainage hole provided in the middle stage retaining wall block. It is sectional drawing explaining the drainage effect | action in the drain hole provided in the upper stage retaining wall block. It is a perspective view which shows the other aspect of a guide plate in the stacking state of an upper and lower block. It is sectional drawing which shows the state which removed the fixing volt | bolt which fixes the upper end side of the guide plate. It is a perspective view which shows the other aspect of a guide plate in the use condition. It is sectional drawing which shows the operation | work process which suspends a retaining wall block in the state which inserted the axial part of the fixing bolt in the bolt hole. It is sectional drawing which shows the state which tightened the fixing bolt, after hanging the retaining wall block. It is sectional drawing which shows the state which loosened the fixing bolt. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is a fragmentary sectional view which shows the other aspect of the connection part which connects a horizontal plate part and an intermediate | middle floor slab. It is sectional drawing which shows the state which provided the connection member in the retaining wall block installed after the 2nd step | paragraph. It is sectional drawing which shows the other aspect of a guide plate. It is sectional drawing which shows the state which interposed the sponge in the clearance gap between the embankment structures. It is sectional drawing which shows the conventional embankment structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Embankment structure 2 Inclined ground 3 Construction space 5 Bottom part 6 Foundation part 7 Retaining wall block 9 Retaining wall 10 Space part 11 Foamed resin block 12 Light weight embankment 13 Vertical wall part 15 Horizontal flat plate part 35 Drain hole 39 Passing part 39a Guide hole 40 hole Inner surface 42 Guide plate 46 Screw shaft 53 Upper end side of guide plate 56 Bolt hole 56a Long hole 57 Fixing bolt 65 Connecting portion 69 Connecting member 76 Intermediate floor slab 89 Lower retaining wall portion 96 Middle retaining wall portion 98 Joint portion 109 Upper portion Retaining wall G Gap

Claims (12)

A banking structure for building a banking structure by stacking foam resin blocks inside the retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. Is built by stacking,
The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A 50 mm gap is formed,
Further, the horizontal plate portion of the upper retaining wall block is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foam resin blocks inside the vertical wall portion of the lower retaining wall block. And an intermediate floor slab is provided on the upper surface so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located above, and the horizontal plate portion and the intermediate floor slab are joined to each other. The parts are connected via a connecting part so that the parts do not separate in the vertical and horizontal directions,
In addition, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, the upper end side is provided with a bolt hole as a long and long hole through which a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is inserted. The upper end side can be fixed to the vertical wall portion by being tightened prior to constructing the intermediate floor slab, and after the intermediate floor slab is constructed, the elongated hole is inserted by being loosened. The fixing bolt is In the hole, the amount corresponding to the vertical width of the gap, embankment structure to build embankment structure, characterized by being made possible descent. A banking structure for building a banking structure by stacking foam resin blocks inside the retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. Is built by stacking,
The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A 50 mm gap is formed,
Further, the horizontal plate portion of the upper retaining wall block is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foam resin blocks inside the vertical wall portion of the lower retaining wall block. And placed on the top surface by a concrete placement through a connecting portion as a protruding reinforcing bar protruding at the tip so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located above. An intermediate floor slab is provided,
In addition, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, the upper end side is provided with a bolt hole as a long and long hole through which a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is inserted. The upper end side can be fixed to the vertical wall portion by being tightened prior to constructing the intermediate floor slab, and after the intermediate floor slab is constructed, the elongated hole is inserted by being loosened. The fixing bolt is In the hole, the amount corresponding to the vertical width of the gap, embankment structure to build embankment structure, characterized by being made possible descent. A banking structure for building a banking structure by stacking foam resin blocks inside the retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. Is built by stacking,
The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A 50 mm gap is formed,
Further, the horizontal plate portion of the upper retaining wall block is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foam resin blocks inside the vertical wall portion of the lower retaining wall block. And an intermediate floor slab is provided on the upper surface so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located above, and the horizontal plate portion and the intermediate floor slab are joined to each other. The parts are connected via a connecting part so that the parts do not separate in the vertical and horizontal directions,
Further, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to the both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, a bolt hole for inserting a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is provided on the upper end side, and the fixing bolt constructs the intermediate floor slab. An embankment structure for constructing an embankment structure characterized in that the upper end side can be fixed to the vertical wall portion by being tightened prior to the construction while the intermediate floor slab is constructed and then removed. A banking structure for building a banking structure by stacking foam resin blocks inside the retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. Is built by stacking,
The upper and lower retaining wall blocks extend vertically above the vertical wall portion of the lower retaining wall block in a vertical state and have a vertical width of 5 to 5 between the upper and lower vertical wall portions. A 50 mm gap is formed,
Further, the horizontal plate portion of the upper retaining wall block is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foam resin blocks inside the vertical wall portion of the lower retaining wall block. And placed on the top surface by a concrete placement through a connecting portion as a protruding reinforcing bar protruding at the tip so as to be continuous with the tip of the horizontal plate portion of each retaining wall block located above. An intermediate floor slab is provided,
Further, the lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to the both sides of the upper end of the vertical inner surface of the vertical wall portion of the retaining wall block located below, or fixed. The upper end side of the vertical wall portion of the retaining wall block located on the upper side is configured to be able to guide the both sides of the lower end of the vertical inner surface downward in contact with each other. In addition, a bolt hole for inserting a fixing bolt screwed into the vertical wall portion of the retaining wall block located above is provided on the upper end side, and the fixing bolt constructs the intermediate floor slab. An embankment structure for constructing an embankment structure characterized in that the upper end side can be fixed to the vertical wall portion by being tightened prior to the construction while the intermediate floor slab is constructed and then removed.   A bolt shaft protrudes from both sides of the upper end of the inner surface of the vertical wall portion, and an insertion hole through which the bolt shaft is inserted is provided on the lower end side of the guide plate, and a nut is provided on the inserted bolt shaft. 5. The embankment structure according to claim 1, wherein the lower end side of the guide plate can be fixed to the inner surface of the vertical wall portion by screwing and tightening. Fill structure.   The embankment structure for constructing an embankment structure according to any one of claims 1 to 5, wherein a soft sponge is interposed in the gap in a close contact state. A block main body having an L-shape formed by projecting a horizontal plate portion at a lower end portion of the vertical wall portion, the block main body being stacked such that the vertical wall portions are stacked vertically; The lower end side of the guide plate extending above the upper end of the vertical wall portion is fixed to both sides of the upper end of the inner surface of the vertical wall portion, and the vertical wall located at the lower stage is disposed on both lower end sides of the vertical wall portion. A passage portion is provided through which an upper end side of the guide plate fixed to the portion can pass upward, and an outer surface of the passage portion is an outer vertical surface on the upper end side of the guide plate. And a bolt hole through which a fixing bolt screwed into the vertical wall portion is inserted is provided on the upper end side. Wall block.   The retaining wall block for embankment structure construction according to claim 7, wherein the bolt hole is formed as a long hole that is long in the vertical direction. A construction method for a banking structure that builds a banking structure by stacking foam resin blocks inside a retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. The retaining wall block is stacked by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block. In addition, the gap between the upper and lower vertical wall portions is formed by forming a gap having a vertical width of 5 to 50 mm, and the horizontal plate portion of the upper retaining wall block is the same as that of the lower retaining wall block. It is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foamed resin blocks inside the vertical wall, and continues to the top of the horizontal plate of each retaining wall block located on the upper surface. In this case, the horizontal plate portion and the intermediate floor slab are arranged in such a manner that the joint portion between them is in the vertical direction and So as not to separate a flat direction, and coupled through a coupling portion,
When the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the upper end of the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending upward is fixed, and the vertical outer surface portion on the upper end side of the guide plate is positioned on both sides of the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above. And the lower end side portions are guided downward, and the horizontal plate portion of the retaining wall block located above is placed on the horizontal upper surface of the lightweight embankment and then provided on the upper end side. The upper end side is fixed to the vertical wall portion by tightening a fixing bolt inserted through a long long hole up and down, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is loosened. Construction method of embankment structure characterized by A construction method for a banking structure that builds a banking structure by stacking foam resin blocks inside a retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. The retaining wall block is stacked by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block. In addition, the gap between the upper and lower vertical wall portions is formed by forming a gap having a vertical width of 5 to 50 mm, and the horizontal plate portion of the upper retaining wall block is the same as that of the lower retaining wall block. It is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foamed resin blocks inside the vertical wall, and continues to the top of the horizontal plate of each retaining wall block located on the upper surface. In this way, concrete is placed through a connecting portion as a protruding reinforcing bar protruding at the tip. An intermediate floor slab provided Te,
When the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the upper end of the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending upward is fixed, and the vertical outer surface portion on the upper end side of the guide plate is positioned on both sides of the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above. And the lower end side portions are guided downward, and the horizontal plate portion of the retaining wall block located above is placed on the horizontal upper surface of the lightweight embankment and then provided on the upper end side. The upper end side is fixed to the vertical wall portion by tightening a fixing bolt inserted through a long long hole up and down, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is loosened. Construction method of embankment structure characterized by A construction method for a banking structure that builds a banking structure by stacking foam resin blocks inside a retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. The retaining wall block is stacked by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block. In addition, the gap between the upper and lower vertical wall portions is formed by forming a gap having a vertical width of 5 to 50 mm, and the horizontal plate portion of the upper retaining wall block is the same as that of the lower retaining wall block. It is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foamed resin blocks inside the vertical wall, and continues to the top of the horizontal plate of each retaining wall block located on the upper surface. In this case, the horizontal plate portion and the intermediate floor slab are arranged in such a manner that the joint portion between them is in the vertical direction and So as not to separate a flat direction, and coupled through a coupling portion,
When the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the upper end of the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending upward is fixed, and the vertical outer surface portion on the upper end side of the guide plate is positioned on both sides of the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above. The lower end side parts are guided downward, and the horizontal plate portion of the retaining wall block located above is placed on the horizontal upper surface of the lightweight embankment, and then the upper end side is inserted. The embossed fixing bolt is tightened to fix the upper end side to the vertical wall, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is removed. Construction method. A construction method for a banking structure that builds a banking structure by stacking foam resin blocks inside a retaining wall built in the construction space,
The retaining wall has an L-shaped retaining wall block in which a horizontal plate portion projects from the lower end portion of a vertical wall portion, with the horizontal plate portion facing the same side and the upper and lower horizontal plate portions in a parallel state. The retaining wall block is stacked by extending the vertical wall portion of the upper retaining wall block vertically upward on the vertical wall portion of the lower retaining wall block. In addition, the gap between the upper and lower vertical wall portions is formed by forming a gap having a vertical width of 5 to 50 mm, and the horizontal plate portion of the upper retaining wall block is the same as that of the lower retaining wall block. It is placed on the horizontal upper surface of a lightweight embankment constructed by stacking foamed resin blocks inside the vertical wall, and continues to the top of the horizontal plate of each retaining wall block located on the upper surface. In this way, concrete is placed through a connecting portion as a protruding reinforcing bar protruding at the tip. An intermediate floor slab provided Te,
When the vertical wall portion of the upper retaining wall block is extended upward in the vertical state on the vertical wall portion of the lower retaining wall block, the upper end of the vertical wall portion is preliminarily placed on both sides of the upper end of the inner surface of the vertical wall portion. The lower end side of the guide plate extending upward is fixed, and the vertical outer surface portion on the upper end side of the guide plate is positioned on both sides of the lower end of the vertical inner surface of the vertical wall portion of the retaining wall block located above. The lower end side parts are guided downward, and the horizontal plate portion of the retaining wall block located above is placed on the horizontal upper surface of the lightweight embankment, and then the upper end side is inserted. The embossed fixing bolt is tightened to fix the upper end side to the vertical wall, and then the intermediate floor slab is constructed, and after the intermediate floor slab is constructed, the fixing bolt is removed. Construction method.

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