KR20120136423A - Retaining wall banking structure - Google Patents

Abstract

A retaining wall fill structure in which a plurality of retaining wall blocks are stacked and covered on a side surface of the fill body, wherein a fiber belt is connected to the back surface of each retaining wall block, and the belt belt connected to the retaining wall block is embedded in the fill body. Pulling of each retaining wall block was prevented through a fiber belt embedded in the wall.

Description

Retaining Wall Fill Structure {RETAINING WALL BANKING STRUCTURE}

The present invention relates to a retaining wall fill structure comprising a plurality of retaining wall blocks covering side surfaces of a fill body by repeating the filling work and the retaining wall work.

A terre armee method for laying a strip-shaped steel reinforcement (strip) in the fill, receiving reaction force by the friction effect of soil and strip, and supporting the retaining wall block to which the strip is connected. Is widely known.

Since the strip is durable and has high frictional ribbed galvanized flat steel, it is integrally connected to the back surface of the retaining wall block by bolts and nuts.

There is also known a landfill construction in which the geogrid is embedded in the fill while directly connecting the geogrid to the back of the retaining wall block.

The fill structure described above has the following problems.

(1) Since the material of the strip is metal, there is a problem that the strip is broken by rust during fill.

In addition, there is a problem that the bolts and nuts used as the connecting means of the strip and the retaining wall block are also corroded, and the connection part of the strip may be broken.

(2) Since the strip is mainly designed to prevent leakage of the retaining wall block, the stability of fill is reduced.

In particular, since the strip cannot sufficiently constrain the displacement of the fill, there is a disadvantage that the normal surface side of the fill body deforms into the uneven shape due to the earthquake, or the fill body easily collapses.

(3) The embedding height of the strip is limited to the embedding height of the retaining wall block, and there is a defect in that the embedding height of the strip cannot be freely selected.

(4) In the fill structure in which the geogrid is directly connected to the rear surface of the retaining wall block, it is in the form of a direct connection between the rigid retaining wall block and the flexible geogrid.

Therefore, there exists a problem that a big stress concentrates on the connection part, and it breaks easily.

In addition, since the geogrid is connected to the back surface of the retaining wall block by using a metal connector, the problem of corrosion of the connector remains.

In addition, in the fill structure directly connecting the wall block and the geogrid, the strong wall block cannot follow the natural consolidation deformation of the soft backed reinforcement soil, and the wall block passes through the geogrid that has settled together with the reinforcement fill. The problem being pulled out is also pointed out.

The present invention has been made to solve the above problems, and an object thereof is to provide a retaining wall fill structure having excellent durability.

An object of the present invention is to provide a retaining wall fill structure that can significantly improve the stability of the reinforcement fill and the retaining wall block.

An object of the present invention is to provide a retaining wall fill structure having excellent seismic resistance.

The present invention provides any of the above.

In order to achieve the above object, the first invention of the present invention is a retaining wall fill structure, which covers a side surface of a fill body by stacking a plurality of retaining wall blocks, and connects a belt belt made of fiber to the back surface of each retaining wall block, The belt belt connected to is embedded in the landfill body, and the pull-out of each retaining wall block is prevented through the fiber belt belt embedded in the landfill body.

According to a second aspect of the present invention, a retaining wall fill structure, in which a plurality of retaining wall blocks are stacked and covered on a side surface of a fill body, is connected to a fibrous belt belt at an arbitrary height of the rear surface of the retaining wall block, and is deposited on the back surface of the retaining wall block. The above-mentioned belt belt connected to the retaining wall block is embedded in the constructed soil body, the sheet-shaped geogrid is laid in the soil body, and the pull-out of each retaining wall block is prevented through the fiber belt belt embedded in the soil body. It is done.

According to a third aspect of the present invention, a retaining wall fill structure, in which a plurality of retaining wall blocks are stacked and covered on a side surface of a fill body, is provided on a legal side of each fill layer and includes a restraining sheet surrounding an end portion of each fill layer, and each fill layer. A sheet-shaped geogrid that is laid and embedded is used in combination, the retaining surface side of the fill layer is maintained in the restraint sheet, and a sheet-shaped geogrid is embedded in each fill layer to construct a fill body, and a predetermined distance from the fill layer. Place the retaining wall block, connect the fiber belt to any height of the rear surface of the retaining wall block, embed the belt belt connected to the retaining wall block in the landfill, and the fiber belt embedded in the landfill. Prevents pulling out of each retaining wall block, and forms a strain absorbing layer between the rear surface of the retaining wall block and the fill body, and double wall structure of the retaining wall block and the strain absorbing layer. To cover the sides of the fill material by the features.

In any one of the first to third inventions of the present invention described above, a plurality of connection holes are formed on the rear surface of the retaining wall block along the height direction, and the belt belt made of the fiber is alternatively provided to the plurality of connection holes. You may connect and embed it in the fill body.

Furthermore, in any one of the first to the third inventions of the present invention described above, the belt belt is connected in a wave form over the back surface of the plurality of retaining wall blocks arranged in the horizontal direction, and the band extending from the back surface of the retaining wall block. The corrugated portion of the belt may be embedded in the fill body.

Furthermore, in any one of the first to third inventions of the present invention described above, the belt belts are connected in a wave form over the back surfaces of the plurality of retaining wall blocks arranged in the horizontal direction, and a plurality of half portions of the belt belts are provided. The rigid resistor may be held in place, and the resistor may be embedded in the fill body together with the plurality of half portions of the belt belt.

Moreover, in any one of the 1st-3rd invention of this invention mentioned above, you may form the side surface of a fill body vertically, and a retaining wall block may be piled up vertically along the side surface of the fill body.

Further, in any one of the first to third inventions of the present invention described above, the side surface of the land body may be formed to have a predetermined gradient, and the retaining wall block may be inclined and stacked along the side surface of the land body. .

Further, in the above-mentioned third invention of the present invention, the auxiliary formwork unit is mounted on the legal side of each fill layer, and a restraint sheet is provided inside the auxiliary form unit to surround the ends of the fill layer. You may also do it.

The present invention can achieve at least one of the following effects.

(1) Since the belt belt connected to the back surface of the retaining wall block is made of fiber, there is no fear of breakage or breakage due to rust, and it becomes possible to support the retaining wall block semi-permanently.

(2) By using the restraint sheet and the geogrid together to construct the landfill body, the stability of the landfill body is increased, the seismic resistance is excellent, and the deformation over time can be minimized, and the earth pressure acting on the retaining wall block can be reduced. Therefore, the stability of the retaining wall block can also be improved.

(3) Since the connection position of the belt belt connected to the back surface of the retaining wall block can be arbitrarily selected, the belt belt can be mounted at any height regardless of the pitch of the geogrid laying.

In addition, by increasing the number of installation of the belt belt connected to the retaining wall block, it is possible to further improve the leakage preventing effect of the retaining wall block.

(4) The geogrid is not connected to the retaining wall block.

Therefore, even if the landfill body is naturally consolidated and deformed, the problem that the retaining wall block is pulled to the fillet side through the geogrid can be solved.

(5) Not only the vertical construction of the retaining wall block, but also the construction of the retaining wall construction in which a gradient, which has been considered difficult in the past, can be applied.

(6) When the strain absorbing layer is formed between the back surface of the retaining wall block and the fill layer to form a double wall structure, even if the soil is deformed due to a major earthquake or the like, deformation of the fill body can be absorbed by the strain absorbing layer. It is possible to effectively avoid protrusion and misalignment, and to ensure high stability of the retaining wall fill structure as a whole.

1 is a longitudinal sectional view of a retaining wall fill structure according to Embodiment 1 of the present invention;
Fig. 2 is a perspective view of a belt belt connected to the rear surface of a retaining wall block having a single connecting portion;
3 is a perspective view in which a belt belt is connected to the rear surface of the retaining wall block except having a plurality of connecting portions.
4 is an explanatory view of a construction method of a retaining wall fill structure.
Fig. 5 is a plan view showing a mode in which a single belt belt is connected to each connecting portion of the rear surface of the retaining wall block.
Fig. 6 is a plan view showing a connection form of a belt belt in which a belt belt continuous to a plurality of connection portions on the rear surface of the retaining wall block is connected.
Fig. 7 is a plan view showing a connection form of a belt belt in which a plurality of belt belts connected to the rear surface of the retaining wall block are arranged in a waveform;
Fig. 8 is a plan view showing a connection form of another belt belt, in which a continuous belt belt is connected to a plurality of connecting portions on the rear surface of the retaining wall block, and the resistor is held over a plurality of folded portions of the belt belt.
9 is a perspective view of a portion of the retaining wall fill structure according to the second embodiment of the present invention, broken from the fill body;
10 is a longitudinal cross-sectional view of a part of the retaining wall fill structure according to the second embodiment;
11 is a longitudinal cross-sectional view of a portion of the retaining wall fill structure according to the third embodiment;
12 is a partially enlarged view of a retaining wall fill structure according to the third embodiment;
13 is a longitudinal cross-sectional view of a portion of the retaining wall fill structure according to the third embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION [

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings.

Example 1

(1) Outline of retaining wall fill structure

1 shows a cross-sectional view of a retaining wall fill structure 10 according to the first embodiment.

The retaining wall fill structure 10 includes a fill body 20 formed by stacking a plurality of fill layers 20a, 20b, ... hierarchically by dividing a plurality of circuits to a completion height while applying voltage. While connecting to the plurality of retaining wall blocks 30 arranged on the side surface (normal surface) of the sieve 20 in the longitudinal direction and the lateral direction and covering the side surface (normal surface) of the landfill body 20, the back surface of each retaining wall block 30. It is comprised by the single | stage or several strip | belt belt 40 embedded in each fill layer 20a, 20b, ....

The main materials will be described in detail below.

(2) retaining wall block

An example of the retaining wall block 30 covering the side surface of the fill body 20 is shown in FIGS. 2 and 3.

The retaining wall block 30 is a block made of precast concrete, the overall shape of which is rectangular, and a connecting portion 31 protruding along the longitudinal direction is integrally formed on the rear surface thereof.

FIG. 2 shows a case in which a T-shaped cross section in which the connecting portion 31 is formed in the center of the back surface of the retaining wall block 30 is shown, and FIG. 3 shows two connecting portions 31 and 31 spaced apart from the back surface of the retaining wall block 30. The case where the cross section which formed the cross-section is shown is shown.

A plurality of connecting holes 32 penetrate through the connecting portion 31 along the height direction.

Although the example in which the connection hole 32 was formed in three places of the upper and lower parts of the connection part 31 is shown in this example, the number of formation of the connection hole 32 may be arbitrary.

These connection holes 32 are holes for connecting the belt belt 40 to arbitrary heights.

In addition, although the shape seen from the front surface of the retaining wall block 30 is square in this example, as another shape seen from the front surface of the retaining wall block 30, polygons, such as a pentagon and a hexagon, can be employ | adopted, for example. have.

(3) belt belt

The belt belt 40 connects one side to the retaining wall block 30, and installs the other in the fill body 20, and uses the frictional resistance with the fill body 20 to retain the retaining wall block 30. ) To restrain the displacement.

While the conventional strip is made of metal, in the present invention, the belt belt 40 is formed of a material having flexibility excellent in tensile strength and corrosion resistance.

As the material of the belt belt 40, for example, a resin processed on the surface of a high-strength fiber or a fibrous belt that can be used for a seat belt of a car can be used to increase impact resistance and weather resistance.

In addition, the belt belt 40 preferably has an interlocking structure formed in a mesh shape so that the pull resistance is increased by having an interlocking effect between the earth and sand belts 40.

As another form of the belt belt 40, the belt which is a plane of a non-porous structure, and what provided unevenness | corrugation in the surface of a belt may be sufficient.

When making the belt belt 40 communicate with the connection hole 32 of the connection part 31 of the retaining wall block 30, as shown in FIG.2 and FIG.3, the resin protection tube 41 made of the belt belt 40 is made. ), The belt belt 40 can be effectively prevented from breaking at the edge of the connection hole 32 of the retaining wall block 30.

In addition, since the bearing force of the retaining wall block 30 is in a relationship proportional to the total length of the belt belt 40, the overall length of the belt belt 40 is appropriately selected according to the site.

(4) Construction method of retaining wall fill structure

Next, the construction method of the retaining wall fill structure 10 will be described.

[Foundation Ball]

As shown in FIG. 4, excavation is performed by a backhoe or the like based on the construction plan, and after the crushed stone layer 50 is laid at the scheduled position of the retaining wall block 30, the foundation is placed on the crushed stone layer 50. The concrete 51 is poured.

[Installation of Retaining Wall Block]

Next, on the foundation concrete 51, the retaining wall blocks 30 of the first stage are installed side by side in a row.

In this example, a case where the retaining wall blocks 30 are stacked to have a predetermined gradient will be described. However, the retaining wall blocks 30 may be stacked vertically.

[Connection of belt belt]

Of the plurality of connection holes 32 formed in the connection portion 31 of the retaining wall block 30, the belt belt 40 is inserted into and connected to the connection hole 32 having a predetermined height.

The belt belt 40 connected to the back side of the retaining wall block 30 is laid so that there is no looseness on the ground on the back side of the retaining wall block 30.

[Construction]

Until the belt belt 40 is hidden, earth and sand are sprayed on the back side of the retaining wall block 30 to form a ground layer 20a as the first layer.

In this example, the first layer of soil layer 20a is formed on the belt belt 40 connected to the lowermost connection hole 32 to embed the belt belt 40, and the upper surface of the first layer of soil layer 20a is embedded. Although the case where the belt belt 40 connected to the connection hole 32 of the uppermost level was attached to this is shown, the connection position of the belt belt 40 with respect to the retaining wall block 30, and the installation number of the belt belt 40 are not shown. In consideration of the bearing force of the retaining wall block 30, it is appropriately selected.

In other words, the belt belt 40 connected to the rear surface of the retaining wall block 30 may be embedded in the fill layer.

In addition, since the connection work of the belt belt 40 is simply performed by inserting the belt belt 40 into the arbitrary connection hole 32 formed in the connection part 31 of the retaining wall block 30, the special connection tool There is no need to use it.

5-7 illustrate the buried form of the belt belt 40 connected to the connection portion 31 of the retaining wall block 30.

The left side of FIG. 5 shows the case where the both ends of the belt belt 40 which have the predetermined length cross | intersected with respect to the connection part 31 of the retaining wall block 30, The right side of FIG. 5 shows the both ends of the belt belt 40. FIG. The case of embedding without crossing is shown.

Further, a belt belt 40 having a long length is laid between the connecting portions 31 of the plurality of retaining wall blocks 30 arranged in the transverse direction and the fill body 20 in a wave shape (zigzag shape). Shows a case where the corrugated portion of the belt belt 40 extending from the back surface of the retaining wall block 30 is embedded in the fill body 20.

FIG. 7 crosses both ends of a single belt belt 40 connected to the connecting portion 31 of each retaining wall block 30, and a pin 43 is placed at the crossing portion to provide a belt belt 40. As shown in FIG. The form which gave continuity to is shown.

6 and 7, when the corrugated portion of the belt belt 40 laid in a wave shape (zigzag shape) is embedded in the filling body 20, not only the frictional resistance due to the earth pressure of the filling body 20 but also the folded belt belt ( Since the corrugation part of 40 exerts the resistance of the soil by surrounding some fill body 20, the retaining force of the retaining wall block 30 becomes high compared with FIG.

8 shows the case where the rigid resistor 42 is held across a plurality of folded portions forming the corrugated portion of the belt belt 40 having the continuity shown in FIGS. 6 and 7.

Only when the resistor 42 is added as shown in FIG. 8, the retaining force of the retaining wall block 30 becomes higher, so that the retaining wall block 30 is set even if the embedding depth of the belt belt 40 toward the rear side of the retaining wall block 30 is set short. ) Can be supported with high bearing capacity.

When the construction of the first stage is completed, the retaining wall block 30 and the second layer of the second stage are shown on the upper surface of the retaining wall block 30 of the first stage and the fill layer 20a of the first layer, respectively, as indicated by the dashed line of FIG. The fill layer 20b is laminated and constructed.

The belt belt 40 is also connected to the rear surface of the retaining wall block 30 of the second stage, and the belt belt 40 is embedded in the fill layer 20b of the second layer in the same manner as described above.

The retaining wall fill structure 10 shown in FIG. 1 is obtained by repeating only the required number of times of the installation hole of the retaining wall block 30, the connection laying hole of the belt belt 40, and the fill work described above.

Since the belt belt 40 can be embedded at any height with respect to the connection portion 31 on the rear surface of the retaining wall block 30, the connection height of the belt belt 40 to the retaining wall block 30 is set to each fill layer. There is no limitation to the layer thickness (pitch thickness) of (20a, 20b, ...).

In addition, at each end of the retaining wall block 30, the bearing capacity of the retaining wall block 30 increases in proportion to the number of installation of the belt belt 40 connected to the retaining wall block 30.

(5) Characteristics of retaining wall fill structure

As shown in FIG. 1, the retaining wall fill structure 10 is covered with a retaining wall block 30 on the normal side of the fill body 20.

The belt belt 40 is supported by frictional resistance due to earth pressure acting in the vertical direction of the fill body 20, and each retaining wall block 30 is supported by the belt belt 40.

Therefore, the earth pressure acting on the side of the fill body 20 is supported by the fill body 20 through each retaining wall block 30 and the belt belt 40.

In addition, since the belt belt 40 has moderate flexibility, even if the land body 20 is consolidated and deformed, the belt belt 40 can follow the deformation of the land body 20 without breaking.

In addition, since the belt belt 40 is formed of a material excellent in corrosion resistance, the belt belt 40 is completely free from the risk of fracture due to rust over its entire length, and the retaining wall block 30 is semi-permanently supported. Can continue function.

[Example 2]

Other embodiments will be described below. In the following description, the same parts as in the above-described embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

(1) Structure of retaining wall fill structure

9 and 10 are based on the retaining wall fill structure 10 according to the first embodiment described above, and another sheet using the sheet-shaped geogrid 70 laid horizontally and embedded in the fill body 20 is used. It shows form.

(2) Additional materials used in this example

First, the geogrid 70 used in the present example will be described.

[Geogrid]

The geogrid 70 is a sheet material that is horizontally embedded in the fill body 20 and reinforces the fill body 20, for example, a core material of aramido fiber in a lattice mesh of high density polyethylene. "Adeam" (manufactured by Maeda Kosen Co., Ltd.), which is covered with a high-density polyethylene film and formed into a mesh shape, is suitable.

(3) Construction method

Repeating the installation of the retaining wall block 30, the connection laying hole of the belt belt 40, and the earthwork are the same as those of the first embodiment, but the present embodiment is similar to the first embodiment for the earthwork. The construction of the sheet-shaped geogrid 70 embedded at an arbitrary height of the fill body 20 is different.

In other words, in the present embodiment, each belt layer 20a, 20b, 20c, in the process of embedding the belt belt 40 to the retaining wall block 30 and embedded in each soil layer (20a, 20b, 20c, ...) To form the auxiliary formwork unit 60 and the restraint sheet 90 inside the auxiliary formwork unit 60 on the surface side of the surface, and one span (total height) of the retaining wall block 30. When dividing into two or more dividings, the process of laying and embedding the geogrid 70 at an arbitrary height of the filling is added to the first embodiment.

The geogrid 70 does not directly connect to the retaining wall block 30.

Therefore, the embedding pitch of the geogrid 70 with respect to the fill body 20 can be arbitrarily set considering the soil quality and fill height of the fill body 20 irrespective of the height of the retaining wall block 30.

In addition, in this example, the belt belt 40 supporting the retaining wall block 30 and the embedding positions of the geogrid 70 reinforcing the fill body 20 do not overlap each other. Of course, you may bury them.

(3) Characteristics of retaining wall fill structure

As shown in FIG. 9, in the retaining wall fill structure 10 according to the second embodiment, in addition to the effects of the first embodiment, the fill body 20 is constructed by using the geogrid 70 and the restraint sheet 90 together. In comparison with Example 1, the stability of the fill body 20 is remarkably improved, and also excellent in the shock resistance.

In addition, by embedding the geogrid 70, it is possible to minimize the deformation of the fill body 20 over time.

As the stability of the fill body 20 increases, the earth pressure acting on the retaining wall block 30 can be reduced, and finally, the stability of the retaining wall block 30 can be improved.

[Example 3]

(1) Structure of retaining wall fill structure

11 to 13 show another retaining wall fill structure 10.

The third embodiment presupposes the fill body 20 of the second embodiment described above, and the sheet-shaped geogrid 70 laid horizontally in the fill body 20 and embedded therein, and each fill layer 20a. , 20b, ... are placed on the side of the surface of the retaining wall block 30 while surrounding the ends of each fill layer 20a, 20b, ..., and the back surface of each retaining wall block 30 is used. The strain absorbing layer 80 is formed between the filling body 20 and the other side surface of the filling body 20 is covered by the double wall structure of the retaining wall block 30 and the strain absorbing layer 80.

(2) Additional materials used in this example

First, the additional material used by this example is demonstrated.

[Restriction Sheet]

The restraint sheet 90 is a sheet member which surrounds the ends of each fill layer 20a, 20b,... From a law surface over a predetermined range.

The restraint sheet 90 serves to block the outflow of soil and to reinforce the soil at the ends (the surface side) of each fill layer 20a, 20b, ..., for example, a polymer such as a nonwoven fabric or a woven fabric. Sheets can be used.

[Geogrid]

The geogrid 70 is a sheet member which is horizontally embedded in the fill body 20 and reinforces the fill body 20. For example, the geogrid 70 is made of a high density polyethylene lattice mesh and an aramid fiber core material of a high density polyethylene. "Adim" (made by Maeda Kosen Co., Ltd.) covered with a film and formed into a mesh shape is suitable.

[Secondary formwork unit]

The auxiliary formwork unit 60 is a formwork formed by bending a plate-shaped mesh having a coarse nose into a substantially L-shape corresponding to a surface gradient.

In this example, the rising edge portion 62 is integrally formed at one end of the horizontal edge portion 61 and the edge portion 61, and the reinforcing yarn between the edge portion 61 and the rising portion 62 is formed. (Iv) The case where the auxiliary formwork unit 60 is comprised by arrange | positioning 63 is demonstrated.

The auxiliary formwork unit 60 is not an essential member of the present invention and may be omitted.

(3) strain absorbing layer

The deformation absorbing layer 80 functions to absorb the deformation of the fill body 20 and to block the deformation force from being transmitted to the retaining wall block 30.

In FIG. 11, the case where the deformation | transformation absorption layer 80 is comprised by the granular material filled in the whole area in the space formed between the back surface of each retaining wall block 30 and the fill body 20 is shown.

As the granular material constituting the strain absorbing layer 80, crushed stone or granular artificial material (e.g., glass recycled product, foamed styrol, etc.) may be employed, and the size of the granular material is preferably a grain size. Do.

The strain absorbing layer 80 functions not only as the strain absorbing function of the fill body 20 but also as a drainage channel of rainwater.

(4) construction method

In this example, it is the same as that of Example 2 which repeats the connection laying hole of the belt belt 40, and the earthwork.

In the third embodiment, compared with the second embodiment, the mounting hole of the retaining wall block 30 for installing the retaining wall block 30 at a predetermined distance from the fill body 20 and the above-described sheet-shaped geogrid 70 are provided. And construction work using the restraint sheet 90 together are different.

That is, in the third embodiment, in the process of embedding the belt belt 40 in the retaining wall block 30 and embedding it in each of the fill layers 20a, 20b, 20c, ..., the fill layers 20a, 20b, and 20c, respectively. To form the auxiliary formwork unit 60 and the restraint sheet 90 inside the auxiliary formwork unit 60 on the legal side of the surface, and to form one span of the retaining wall block 30 (total height). When dividing a lot into two or more times, the process of laying and embedding the geogrid 70 in arbitrary height of a fill is added.

The geogrid 70 does not directly connect to the retaining wall block 30.

Therefore, the embedding pitch of the geogrid 70 with respect to the fill body 20 can be arbitrarily set considering the soil quality and fill height of the fill body 20 irrespective of the height of the retaining wall block 30.

When the filling is completed for each span (total height) of the retaining wall block 30, the deformable absorbing layer 80 is formed by filling the granular material in the entire space formed between the rear surface of each retaining wall block 30 and the filling body 20. do.

Accordingly, the side surface of the fill body 20 is covered by a double wall structure composed of the retaining wall block 30 and the strain absorbing layer 80.

In this example, a space is formed between the back surface of each retaining wall block 30 and the fill body 20 before filling the granular material.

Therefore, as shown in the enlarged view of FIG. 12, when placing and restraining the restraint sheet 90 inside the auxiliary formwork unit 60, the planar standing portion of the auxiliary formwork unit 60 is formed by the voltage of the filling. 62 is deformed by earth pressure and begins to be enclosed in an arc shape.

Therefore, solidification of the filling on the legal side can be surely performed.

In addition, in the case of providing a gradient to the retaining wall block 30 as in the present example, the retaining wall block is obtained by obtaining a reaction force from the existing soil or the earthwork not shown in the drawing until the filling of the granular material is completed. 30) is spaced apart from the surface of the fill body (20).

(4) Characteristics of retaining wall fill structure

In the third embodiment, by using the geogrid 70 and the restraint sheet 90 together to construct the landfill body 20, the stability of the landfill body 20 is significantly improved compared to the second embodiment, and also excellent in the shock resistance. .

Furthermore, by wrapping the normal side of the fill with the restraint sheet 90, the deformation of the normal of the fill body 20 after construction can be suppressed.

In addition, by embedding the geogrid 70, it is possible to minimize the deformation of the fill body 20 over time.

In addition, in the third embodiment, the strain absorbing layer 80 is formed between the rear surface of each retaining wall block 30 and the fill body 20, and the double wall structure of the retaining wall block 30 and the strain absorbing layer 80 is formed. The side surface of the fill body 20 is coated.

Therefore, in addition to the effects of the above-described embodiments 1 and 2, in the retaining wall fill structure 10 according to the third embodiment, even if the land body 20 deforms due to a major earthquake or the like, Since the deformation of the side surface can be absorbed by the strain absorbing layer 80, it is possible to effectively avoid the protrusion or the deviation of the retaining wall block 30, so that the stability of the retaining wall fill structure 10 is more stable as compared with the first and second embodiments. The advantage of being good can be obtained.

When the strain absorbing layer 80 of this example does not exist, a large difference arises in the ground reaction force which supports the fill body 20 and the retaining wall block 30, respectively.

The difference in ground reaction force is due to the weight difference between the fill body 20 and the retaining wall block 30.

In addition, as shown in FIG. 13, unlike the case where the strain absorbing layer 80 is formed of a granular material, the strain absorbing layer 80 is formed by the space itself formed between the back surface of each retaining wall block 30 and the fill body 20. It may also constitute 80.

10: retaining wall fill structure
20: fill
30: retaining wall block
31: connection
40: Belt belt
60: auxiliary formwork unit
70: geogrid
90: restraint sheet

Claims (5)

A retaining wall fill structure comprising a plurality of retaining wall blocks stacked on a side surface of a fill body,
The retaining wall block forms a plurality of connection holes in the rear surface of the connecting portion along the height direction, while forming a connecting portion projecting along the longitudinal direction by integral molding on the rear surface thereof.
Alternatively connecting at any height by inserting a mesh belt belt forming an opening structure made of fiber into any one of the plurality of selected connection holes,
The above belt belt connected to the retaining wall block is embedded in the fill body formed by laying the back surface of the retaining wall block.
A sheet-shaped geogrid is laid in the fill body,
A retaining wall fill structure comprising a displacement of each retaining wall block through a fibrous belt belt embedded in a fill body. The method of claim 1,
A belt belt having a continuity is formed in a wave form between the connecting portions on the back surface of the plurality of retaining wall blocks arranged in the lateral direction and the fill body, and the corrugated portion of the belt belt extending from the back surface of the retaining wall block is placed on the fill body. Retaining wall fill structure, characterized in that the buried. The method of claim 2,
A retaining wall fill structure, wherein a rigid resistor is held over a plurality of folded portions of the belt belt corrugated portion, and a resistor is embedded in a fill body along with a plurality of half portions of the belt belt. 4. The method according to any one of claims 1 to 3,
A retaining wall fill structure, characterized in that the side surface of the fill body is formed vertically, and the retaining wall blocks are stacked vertically along the side surface of the fill body. 4. The method according to any one of claims 1 to 3,
A retaining wall fill structure comprising: a side surface of a fill body formed to have a predetermined gradient, and the retaining wall blocks are inclined and stacked along the side surface of the fill body.

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