WO2001006064A1

WO2001006064A1 - Retaining wall structure

Info

Publication number: WO2001006064A1
Application number: PCT/JP1999/003881
Authority: WO
Inventors: Jenryo Sato
Original assignee: J.M. Consulting Engineers Office Co., Ltd.
Priority date: 1999-07-19
Filing date: 1999-07-19
Publication date: 2001-01-25
Also published as: CN1361841A; KR20020027494A

Abstract

Laying blocks are stacked one upon another with communication holes passing vertically through the laying blocks formed therethrough, earth and sand are filled in gaps between upper and lower ends of the laying blocks, as well as in communication holes to join vertically earth and sand in each layer, a block protection wall is erected in front of stacked laying blocks, and a filler is filled in a gap between the rear surface of the block protection wall and the front surfaces of the stacked laying blocks, thereby ensuring a stable function as a retaining wall and reducing construction costs.

Description

Satsuki-Kiyada Soil Retaining Wall Structure Technical Field

The present invention relates to an earth retaining wall structure that can ensure a stable function as a retaining wall and can reduce construction costs. Background art

Conventionally, one type of retaining wall has been constructed by stacking concrete masonry blocks, and the retaining wall calculates the earth pressure acting on the retaining wall and withstands it. The construction is performed by calculating the thickness of the retaining wall and the amount of reinforcing steel.

In recent years, a method has been developed to replace the earth and sand on the retaining wall that generates back pressure with styrofoam.In this method, the weight of the styrofoam replaced with the earth and sand is negligibly small, so the angle of repose By replacing all the earth and sand, it is possible to eliminate the back earth pressure acting on the retaining wall, calculate the thickness of the retaining wall and the amount of reinforcing steel that can withstand the back earth pressure, and prepare concrete and reinforcing steel for that No need to do.

However, in the former method using a concrete block, there is a problem that the construction cost is high. However, it is relatively expensive, and because of the low weight of styrofoam, the stability is not good. Disclosure of the invention

The present invention relates to an upper retaining retaining wall structure constructed by stacking foam blocks made of foam resin along a slope, and forming a communication hole vertically penetrating the stack blocks to form the stack blocks. In addition to stacking, each block was filled with earth and sand between the top and bottom, and the communication hole was also filled with earth and sand. An embankment retaining wall structure characterized in that a block protection wall is erected in front of a stacking block and a filler is filled between a rear surface of the block protection wall and a front surface of the stacked stacking block. It is.

In addition, the present invention is also characterized by the following configurations.

(1) The stacking block includes a front wall forming block, and a plate-like block that is placed in a substantially horizontal state by engaging the front end with the rear end of the front wall forming block. These blocks are sequentially stacked upward to form a flat earth and sand filling space between the vertically adjacent plate-like blocks, and a communication hole is formed in each plate-like block to penetrate vertically. The earth and sand filled in each earth and sand filling space is connected vertically by the earth and sand filled in each communication hole, and a block protection wall is provided in front of the front wall formed by the front wall forming block with a protection wall support. To form a filling space between the block protection wall and the front wall, and to fill the filling space.

(2) The depth of each plate-shaped block shall be gradually increased from the bottom to the top.

(3) In the front wall forming block, locking grooves for locking the protection wall support are formed by notching in the vertical direction, and the protection wall support is inserted into each locking groove and locked. Therefore, a block protection wall has been installed between adjacent protection wall supports in the left and right direction.

(4) The stacking block has a pair of front and rear vertical walls having a communication vertical hole penetrating vertically, and a bridge having a communication stalk extending vertically between the center portions of the two vertical walls. A vertical wall having a communicating vertical hole penetrating in a vertical direction, a projecting horizontal wall projecting at a central portion of the vertical wall and having a communicating hole penetrating vertically in the central portion. And a half-split block formed from the base block, the vertical wall of the basic block and the vertical wall of the half-split block are partially engaged in the front-rear direction in a superimposed state, and A half-blocked protruding horizontal wall is placed on the base block, and it is sequentially stacked upward, and a communication vertical hole formed on the front wall of each basic block and a communication hole formed on the protruding horizontal wall of each half-block. To the upper and lower sides, and erection of each basic block A communication hole that is, communicates with the up and down direction communicating with the longitudinal hole which is formed in the vertical walls of each half-split shape Proc, filled with sand into each hole communicating with the vertical direction, the vertical direction Forming an elongating earth pillar, a block protection wall is attached via a protection wall support in front of a front wall formed by a vertical wall located in the front row and a protruding horizontal wall. Forming a filling space between the vertical wall and filling the filling space.

(5) The number of basic blocks and half-split blocks arranged in the depth direction shall be gradually increased from the bottom to the top.

(6) On the vertical wall and the protruding horizontal wall located in the front row, locking grooves for locking the protection wall support are formed by notching in the vertical direction. A block protection wall has been installed between adjacent protection wall supports in the direction.

(7) The filling space is filled with the watertight packing material.

(8) An intermediary body for edging is arranged along the front surface of the front wall, and a watertight filling is filled in the filling space formed between the interposed edging body and the protective wall for the door. That you did.

(9) The interleaving body is formed of the same foamed resin material as the block into a thin plate shape.

(10) Laying a foundation and floor slab at the retaining wall construction site, stacking the stacking blocks on the foundation and slab, and erection of a block protection wall in front of the stacked stacking block, The floor slab has a front part that projects forward beyond the block protection wall.

(1 1) The base and floor slab is equipped with a pair of front and rear waterproof walls buried at the retaining wall construction site, and a ceiling wall that is installed between the upper edges of both the waterproof walls and exposed to the retaining wall construction site. Then, the water blocking wall and the ceiling wall were formed in a side view gate type.

(12) A block protection wall shall be placed approximately at the center of the base and floor slab, and the joint between the block protection wall and the base and floor slab shall be sealed from the front with a waterproof material. BRIEF DESCRIPTION OF THE FIGURES

【Figure 1】

FIG. 1 is a cross-sectional side view of a retaining wall as a first embodiment according to the present invention.

【Figure 2】

A partially cutaway front view of the retaining wall. [Figure 3]

The top view of the earth retaining wall.

[Fig. 4]

The top view of the protection wall body of the same earth retaining wall.

[Figure 5]

FIG. 3 is a perspective explanatory view of a front wall forming block and a plate-shaped block.

[Fig. 6]

The front view of a block protection wall.

[Fig. 7]

The top view of the same block protection wall.

[Fig. 8]

The rear view of the block protection wall.

[Fig. 9]

The side view of the block protection wall.

[Fig. 10]

The front view of a protective wall support.

[Fig. 11]

FIG. 3 is a plan view of the protective wall support.

[Fig. 1 2]

FIG. 3 is a side view of the protective wall support.

[Fig. 13]

FIG. 4 is a cross-sectional side view of a retaining wall as a second embodiment according to the present invention.

[Fig. 14]

The top view of the earth retaining wall.

[Fig. 15]

FIG. 4 is a perspective view illustrating connection of front and rear block forming pieces.

[Fig. 16]

FIG. 9 is a cross-sectional side view of a retaining wall as a third embodiment according to the present invention. [Fig. 17]

The partially cutaway front view of the earth retaining wall.

[Fig. 18]

The top view of the earth retaining wall.

[Fig. 19]

FIG. 4 is an explanatory perspective view of connection between a basic block and a half-blocked block.

[Fig. 20]

FIG. 14 is a sectional side view of a retaining wall as a fourth embodiment according to the present invention.

[Fig. 21]

Sectional side view of a protective wall body.

[Fig. 22]

Sectional plan view of a protective wall.

[Fig. 23]

The mechanical explanatory drawing of a retaining wall. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)

A shown in FIGS. 1 to 4 is a retaining wall according to the present invention as a first embodiment. The retaining wall A is constructed by laying a foundation stone layer 1 on a retaining wall construction site B. A foundation block 2 made of synthetic resin is laid on the foundation stone 1 and a stacking block 19 is laid on the foundation adjustment block 2 to construct the retaining wall body 3 and the retaining wall body 3 A protective wall 4 is provided in front of the vehicle. 5 is back crushed stone, 6 is back soil, 7 is fill material, 8 is perforated pipe, 9 is upper drain pipe, 10 is lower drain pipe, 11 is coated floor, 12 is top concrete Reference numeral 13 denotes a pavement layer, C denotes a ground layer, and 14 denotes a slope formed by excavating the ground layer C.

Then, as shown in FIG. 5, the retaining wall main body 3 is mounted in a substantially horizontal state by engaging the front end edge with the front wall formation block 20 and the rear end edge of the front wall formation block 20. Put Block 19 is formed from the plate-shaped block 21 and the receiving block 42 placed on the rear edge of the plate-shaped block 21, and the stacked blocks 19 are sequentially stacked upward and vertically. A flat earth and sand filling space 22 is formed between the adjacent plate-shaped blocks 21 and 21, and a communication hole 26 is formed in each plate-shaped block 21 so as to penetrate in the vertical direction. Is formed in a compacted state to form a sandwich-type compacted soil layer 23, and a connection pillar connecting the vertically compacted soil layers 23, 23 by filling each communication hole 26 with earth and sand. Forming 24.

As shown in FIG. 5, the front wall forming block 20 includes a front wall forming surface portion 20a formed by extending in the left-right direction, and a positioning stepped recess formed in a front lower end edge of the front wall forming surface portion 20a. 20b and an engaging receiving portion 20c formed on the rear side of the positioning stepped concave portion 20b are integrally formed of a foamed resin such as a foamed foam nozzle.

In the front wall forming surface portion 20a, two locking grooves 25, 25 for locking a protective wall support described later are formed at intervals in the left-right direction and cut out in the vertical direction. Each locking groove 25 is formed in a substantially T-shape in plan view from a left-right extension groove 25a and a front extension groove 25b extending forward from the center of the left-right extension groove 25a. Here, the positioning stepped concave portion 20b is fitted to the upper end of the front wall forming surface portion 20a of the front wall forming block 20 located at the lower stage so that positioning can be performed, and the lowermost front wall forming portion 20b is formed. The surface portion 20a is fitted to the positioning protrusion 2a formed on the upper surface of the basic adjustment block 2 so that positioning can be performed.

As shown in FIG. 5, the plate-shaped block 21 is formed by forming the block body 21a into a thin plate shape using a foamed resin such as styrene foam, and three communication holes penetrating vertically on the left and right center lines of the block body 21a. 26, 26, 26 are formed at an interval in the front-rear direction, and three semicircular recesses 27, 27, 27 are formed on the left and right side edges, respectively, and the front wall is formed on the lower front surface. An engaging groove 28 is formed in the engaging receiving portion 20c of the forming block 20 to be engaged from above. In addition, the block main body 21a and the receiving block 42 can be integrally formed as required.

Here, the communication hole forming recesses 27, 27 of the block main bodies 21a, 21a adjacent to each other in the left-right direction are arranged in a left-to-right facing state to form a communication hole. In addition, the block body 21a is formed such that the left and right widths are gradually reduced from the front end to the rear end, and the front ends of the block bodies 21a adjacent in the left and right direction are continuously formed along the curved slope 14. It can be arranged.

In addition, each plate-like block 21 is prepared by preparing a plurality of types having different depth widths W and stacking those having a large depth width W every predetermined number of steps from the lower level to the upper level. Is formed so that the side shape gradually becomes wider toward the upper side than the lower side.

The receiving block piece 42 is formed in a rod-like shape extending in the left-right direction with a foamed resin such as styrene foam and has a rectangular cross section, and is interposed between the rear ends of the plate-shaped blocks 21 and 21 which are vertically adjacent to each other. Thus, the earth and sand filling space 22 formed between the two plate-like blocks 21 and 21 can be secured well.

In this way, the retaining wall main body 3 has a small contact area on the lower end surface, and the upper portion gradually projects rearward, so that the center of gravity is located on the rear side. It can be set at the top to properly counter the earth pressure on the back side, and even in normal times and even in the event of an earthquake, the retaining wall body 3 will have a sliding safety factor and fall when receiving the earth pressure on the back side The safety factor can be secured on the safe side. The protective wall 4 is attached to the front wall 29 formed by the front wall forming block 20 by attaching a block protective wall 30 via a protective wall support 31 to the block protective wall 30 and the front wall 29. A filling space 32 is formed between them, and the filling material 32 is filled in the filling space 32.

As shown in FIGS. 6 to 9, the block protection wall 30 extends in the left-right direction and has an L-shaped cross section on the side thereof. A pot portion 30b for planting formed by bulging forward of the portion, and a pair of left and right reinforcing ribs 30c, 30c for reinforcing the pot portion 30b are integrally formed of a mortar containing fibers.

Here, the protective wall main body 30a is formed to be slightly wider than the left-right width of the front wall forming block 20 and to be approximately half the height of the front wall forming block 20.

As shown in FIGS. 10 to 12, the protective wall support 31 is provided with a front wall forming block. A base end 31a formed in a substantially T-shape in plan view to be fitted and locked in the locking groove 25 formed in the base 20, and a front end edge of the base end 31a is formed so as to protrude in the left-right direction. The tip portion 31b formed in a visual Y-shape is integrally formed with a mortar containing fibers. Here, the protective wall support 31 is formed at a height that is approximately half the height of the front wall forming block 20.

Then, a block protection wall 30 is interposed between the front end portions 31b of the protection wall supports 31, 31 adjacent to the left and right, and a filling space is provided between the block protection wall 30 and the front wall forming block 20. 32 are formed.

The filling material 33 may be any material as long as it can fill the filling space 32 and protect the front wall 29 made of foam resin, which is vulnerable to ultraviolet rays, fire (heat), impact, and the like. In the case where the soil is filled with planting soil, cement or mortar can be poured in if it is necessary to make the front wall 29 functioning as a retaining wall watertight. .

(Second embodiment)

FIGS. 13 and 14 show the retaining wall A as the second embodiment. The retaining wall A has the basic structure described in the first embodiment. , Except that the plate-like block 21 is divided into two parts.

That is, as shown in FIG. 15, the plate-like block 21 is formed of a front block forming piece 40 and a rear block forming piece 41 detachably connected to a rear end of the front block forming piece 40. are doing.

The front block forming piece 40 is formed by forming the block forming piece main body 40a into a thin plate shape using a foamed resin such as foamed styrene, and two communicating holes vertically penetrating the left and right center lines of the block forming piece main body 40a. Holes 43, 43 are formed at intervals in the front-rear direction, and semicircular arc-shaped recesses 44, 44 are formed on the left and right edges, respectively, and a front wall forming block 20 is formed on the front lower surface. An engagement groove 45 is formed in the joint receiving portion 20c from above, and fitting protrusions 46 are formed on the left and right sides of the rear upper surface.

The rear block forming piece 41 is formed by forming the block forming piece main body 41a into a thin plate shape using a foamed resin such as styrene foam, and the left and right center lines of the block forming piece main body 41a. Three communication holes 47, 47 penetrating vertically are formed at an interval in the front-rear direction, and two semicircular arc-shaped recesses 48, 48 are formed on the right and left edges, respectively. On the lower surface of the front part, there are formed fitting holes 49, 49 for fitting from above into the fitting projections 46, 46 of the front block forming piece 40.

Here, the communication hole forming recesses 44, 44 of the block forming piece main bodies 40a, 40a adjacent in the left-right direction and the communication hole forming recesses 48, 48 of the block forming piece main bodies 41a, 41a are arranged in a left-right facing state. As a result, a communication hole is formed.

Moreover, each block forming piece main body 40a, 41a is formed such that the left and right widths are gradually reduced from the front end to the rear end, and the front ends of the block forming piece main bodies 40a, 41a adjacent in the left and right direction are curved. It can be arranged continuously along the slope 14. Further, as shown in FIG. 14, the rear block forming piece 41 is provided with fitting holes 49, 49 so as to straddle the rear ends of the front block forming pieces 40, 40 adjacent in the left-right direction. The parts 46, 46 are fitted and connected.

The receiving block piece 42 is formed in a rod-like shape extending in the left-right direction with a foamed resin such as styrofoam and has a rectangular cross-section, and is interposed between the rear ends of the vertically adjacent rear blocks 41, 41. Therefore, the earth and sand filling space 22 formed between the upper and lower front / rear block forming pieces 40, 40, 41, 41 can be secured well. In this way, in the retaining wall A according to the second embodiment, since the depth width W of the plate-shaped block 21 can be set large, the state of the large retaining wall and the state of the bee to the top are set large. It is suitable when it does.

In this embodiment, the plate-like block 21 is formed by dividing the plate-like block 21 into two parts. However, the number of the plate-like block 21 is not limited to this, and the workability and the depth width W of the plate-like block 21 are not limited to this. In consideration of the size and the like, three or more divisions can be made. The divided block forming pieces can be connected to each other in the front-rear direction in the same manner as in the present embodiment to form the plate-shaped block 21.

(Third embodiment)

FIGS. 16 to 18 show a retaining wall A as a third embodiment. The retaining wall A has the same basic structure as that of the first and second embodiments. Similar to wall A, A However, the difference is that the retaining wall body 3 is formed as follows. Reference numeral 15 denotes an outline of the ground C before the slope 14 is formed.

That is, the retaining wall main body 3 is formed by stacking the stacking blocks 19 formed by combining the basic blocks 60 and the half-split blocks 61.

The basic block 60 has a pair of front and rear vertical walls 64 and 65 having communication vertical holes 62 and 63 penetrating in the vertical direction, And a bridge lateral wall 68 having communication hole forming recesses 67, 67 on the left and right side edges, respectively, and formed integrally with a foamed resin such as styrene foam.

Here, the vertical width of the erection lateral wall 68 is approximately one third of the vertical width of the vertical walls 64, 65 having the same width, and the front and rear widths of the erection horizontal wall 68 are the same width. It is approximately twice the walls 64 and 65.

The left and right width of the rear vertical wall 65 is formed to be slightly narrower than the left and right width of the front vertical wall 64, and the front ends of the basic blocks 60 and 60 adjacent in the left and right direction are curved. It can also be arranged continuously along.

The half-split block 61 is provided with a vertical wall 71 having a communication vertical hole 70 penetrating in the vertical direction, and a communication hole projecting horizontally from the center of the vertical wall 71 and vertically penetrating the center. The protruding lateral wall 73 having 72 is integrally formed with a foamed resin such as styrene foam.

Here, the vertical wall 71 is formed to have substantially the same vertical and horizontal widths as the vertical walls 64 and 65 of the basic block 60, and the vertical width of the projecting horizontal wall 73 is the vertical width of the erected horizontal wall 68 of the basic block 60. Approximately one-third of the vertical width of both vertical walls 64, 65 with the same width in the vertical direction, and the front and rear width of the erected horizontal wall 68 is the same as that of both vertical walls 64, 65. It is almost the same as the front and rear width.

Further, a locking groove 25 for locking the protection wall support 31 is formed by notching in the vertical direction in the vertical wall 64 and the protruding horizontal wall 73 located in the front row. The block protection wall 30 is erected between the adjacent protection wall supports 31 in the left and right directions by locking. In constructing the retaining wall body 3 in this manner, the vertical walls 64, 65 of the basic block 60 and the vertical wall 71 of the half-blocked block 61 are partially engaged in the front-rear direction in a superposed state. Then, half-broken protruding horizontal walls 73 are arranged between the vertical walls 64, 64 of the upper and lower basic blocks 60, 60, and are sequentially stacked upward.

At this time, the communication vertical holes 62 and 63 formed in the vertical walls 64 and 65 of each basic block 60 and the communication holes 72 formed in the protruding horizontal wall 73 of each half-block-shaped block 61 are connected vertically. The communication hole 66 formed in the erected lateral wall 68 of each basic block 60 and the communication vertical hole 70 formed in the vertical wall 71 of each half-split block 61 communicate vertically. Then, earth and sand are filled in each of the holes communicating in the vertical direction to form a soil column 74 extending in the vertical direction.

In addition, the number of basic blocks 60 and half-blocked blocks 61 arranged in the depth direction is gradually increased toward the upper stage from the lower stage, so that the top block is formed.

Subsequently, a block protection wall 30 is attached via a protection wall support 31 in front of a front wall 29 formed by a vertical wall 64 and a protruding horizontal wall 73 located in the front row. A filling space 32 is formed with the front wall 29, and the filling material 32 is filled in the filling space 32.

(Fourth embodiment)

FIG. 20 shows a retaining wall A as a fourth embodiment. The retaining wall A has the same basic structure as the soil retaining wall A of the first embodiment described above. It is different in that it has a water stop function. 16 is a gutter.

In other words, in the retaining wall A of the fourth embodiment, as shown in FIGS. 21 and 22, the block protective wall 30 is provided with a pot portion on the protective wall main body 30a in order to ensure good waterproofness. 30b and the reinforcing ribs 30c, 30c are not provided, and are formed only by the protective wall main body 30a.

Then, the edging body 81 is arranged along the front surface of the front wall 29, and the watertight packing 80 is provided in the filling space 32 formed between the edging body 81 and the block protection wall 30. Is filled.

Here, as the watertight packing 80, for example, cement, mortar, or gas Mortar in which lath fibers and the like are kneaded can be used. In addition, the edge interposing member 81 can be formed in a thin plate shape using the same foamed resin material as each block, for example, styrene foam.

In this way, the watertight packing 80 is in close contact with the interposition body 81 and the block protective wall 30, but since the interposition body 81 and the front wall 29 are separated in a marginal state. In addition, even when the vertical displacement of the front wall 29 and the block protective wall 30 is different, no stress is applied to the work protective wall 30.

Therefore, the water blocking effect of the block protective wall 30 and the watertight packing 80 is well ensured, and the safety as a revetment retaining wall can be secured.

At this time, the edging intermediary body 81 adheres to the surface of the front wall 29 to perform the water stopping function, so that the water stopping effect is sufficiently secured from this point, and the safety as the revetment retaining wall is secured. Can be secured.

In addition, the edging body 81 is made of the same foamed resin material as each block, and the weight of the edging body 81 is reduced, so that the increase in the weight of the wall body is reduced, and In addition, it is possible to prevent the transmission of stress from the front wall 29 to the block protection wall 30 by ensuring good performance and ensuring a good cutting state with the front wall 29.

In addition, the retaining wall A of the fourth embodiment has a feature in that a foundation and floor slab 82 is provided instead of the foundation adjustment block 2 in order to secure a water stopping effect.

In other words, the base and floor slab 82 is made of cast-in-place reinforced concrete, and a pair of front and rear water stop wall embedding grooves M1 and M2 are formed in the retaining wall construction site B by extending in the retaining wall construction direction. Front and rear water stop walls 83,84 are erected in the grooves M1 and M2 for embedding the water stop wall, and backfill soil 85 is backfilled between the water stop walls 83,84 and the site G at the site. A ceiling wall 86 is installed between the upper ends of the water stop walls 83 and 84 so as to be exposed on the field panel G, and is formed in a side view gate type.

Then, a positioning projection 87 is protruded substantially at the center of the ceiling wall 86 of the foundation / floor slab 82, and the front wall 29 and the block protection wall 30 are placed on the positioning projection 87. The lower end surface of the block protection wall 30 and the upper surface of the positioning projection 87 formed on the foundation and floor slab 82 Are sealed from the front with a water blocking material 88 to form a sealed state.

The water-stopping material 88 is formed by post-punching over the entire extension width of the block protection wall 30 on the ceiling wall 86 located near the positioning projection 87. Here, as the water stopping material 88, for example, mortar mixed with glass fiber or the like can be used.

The retaining wall A as the fourth embodiment is configured as described above. According to the retaining wall A, the following operation and effect can be obtained.

In other words, the front part of the foundation / floor slab 82 is made to protrude forward from the block protection wall 30, and the ground contact area of the foundation / floor slab 82 to the retaining wall construction site B is inversely proportional to the N value of the ground (standard If the N value of the penetration test is small, the ground contact area should be set large), which can disperse the applied load pressure and greatly stabilize the ground bearing capacity. As a result, the soft ground A retaining wall A can be built on top. In addition, since the retaining wall is formed by laminating the foam resin building block 19 and earth and sand, the specific gravity of the retaining wall itself can be set to half that of soil or concrete (for example, 1.1). As a result, the foundation treatment that was conventionally required when constructing the retaining wall A on soft ground is no longer necessary, and the cost can be reduced.

In addition, a watertight filling 80 is filled in a filling space 32 formed between the interposition body 81 for edging arranged along the front surface of the front wall 29 and the block protection wall 30 to form a block protection wall. In addition to providing waterproofness to the block 30, the joint between the lower end of the front face of the block protection wall 30 and the positioning projection 87 formed on the base and floor slab 82 is sealed with a water blocking material 88. Because of this, the watertightness of the front face of the retaining wall A can be ensured well, and the retaining wall A can be stored in a retaining wall such as a reservoir D or a revetment retaining wall. Can also function. As a result, the revetment period and construction costs can be significantly reduced.

The water blocking material 88 struck from the front of the block protection wall 30 can prevent the block protection wall 30 from sliding forward, thereby strengthening the structure of the retaining wall A. be able to.

The base and floor slab 82 is a pair of front and rear water barriers buried at retaining wall construction site B 83,84 And a ceiling wall 86 erected between the upper end edges of the water blocking walls 83 and 84 and exposed at the retaining wall construction site B. The water blocking walls 83 and 84 and the ceiling wall 86 provide a side view. Since it is formed in a gate shape, it can have a waterproof effect against infiltration water, and as shown in the conceptual diagram of Fig. 23, the base and floor slab 82 is By fitting, the effect of preventing sliding in the front-rear direction can be achieved. As a result, the stability of the retaining wall A can be improved.

The so-called brie penetration path length L formed on the lower surface of the base and floor slab 82 can be set to be long, and the base and floor slab 82 and the block having the water stopping effect as described above. The protection wall 30 can reliably prevent the water in the reservoir pond D or the like from penetrating into the bottom surface of the retaining wall A as infiltration water.

Therefore, it is possible to prevent the generation of buoyancy P1 due to infiltration water or the like that pushes the base and floor slab 82 upward from below.

Also, even if the buoyancy P1 acts slightly, stability can be ensured by the size of its own weight.

The spring water generated from the ground C is discharged to the outside through the perforated pipe 8 and the upper and lower drain pipes 9 and 10, and is pushed upward from below the base and floor slab 82. The generation of rising buoyancy P1 is prevented.

In addition, as shown in FIG. 23, in the retaining wall A according to the present invention, the contact area of the lower end surface of the lowermost stack block 19 that comes into contact with the foundation adjustment block 2 or the foundation / floor slab 82 is reduced. However, since the stacking block 19 located at the upper stage gradually protrudes rearward and is in a so-called top heavy state, its center of gravity can be set at the upper rear side. Leak P3, which properly opposes back earth pressure P2, can act. As a result, even in normal times and even during an earthquake, when the retaining wall A receives the back earth pressure P2, the moment of inertia M acts on the back earth pressure P2 side, and the retaining wall A It is possible to secure the sliding safety factor and the falling safety factor on the safe side.

In addition, by adopting the shape of the top heave, the amount of floor moat can be reduced, so that an economical cross section design of the retaining wall A can be made. The retaining wall body 3 of the retaining wall A having the water blocking function of the fourth embodiment should be configured in the same manner as the retaining wall body 3 of the retaining wall A of the second or third embodiment. Can also. Industrial use g

According to the present invention, the following effects can be obtained.

(1) In the present invention, a retaining wall structure is constructed by stacking foaming resin-made building blocks along a slope to form a communication hole that penetrates the building blocks in a vertical direction. In addition to stacking the building blocks, filling the space between the top and bottom of each building block with earth and sand, and also filling the communication holes with earth and sand to connect the earth and sand vertically and to the front of the stacked block. A block protection wall is erected to fill the space between the back of the block protection wall and the front of the stacked building blocks.

Thus, in the retaining wall according to the present invention, the earth and sand are filled between the stacked blocks stacked along the slope, and the earth and sand filled in the communication holes formed in each of the stacked blocks. As a result, the relatively lightweight block made of foamed resin and the relatively heavy soil can be integrated to work together, ensuring a stable function as a retaining wall. In addition to this, construction costs can be reduced.

In addition, the total weight of the wall can be set to a desired weight by the amount of soil to be filled, so that the wall can be prevented from sinking and the wall itself can be prevented from collapsing due to the back surface earth pressure. Therefore, also from this point, it is possible to sufficiently secure the stability required for the block structure.

In addition, since the filler is filled between the back surface of the block protection wall and the front surface of the stacked blocks, the filling block is made of foamed resin that is vulnerable to ultraviolet rays, fire (heat), impact, etc. Can be protected, and the retaining wall can be made into a semi-permanent structure.

(2) In the present invention, the stacking block includes a plate-like block which is mounted on the front wall forming block in a substantially horizontal state with the front end edge engaged with the rear end edge thereof. Blocks are stacked one above the other and flattened between adjacent plate-like blocks in the vertical direction. And a plate-shaped block is formed with a communication hole that penetrates in the vertical direction, and the earth and sand filled in each earth and sand filling space is connected vertically by the earth and sand filled in each communication hole. In front of the front wall formed by the front wall forming block, a block protection wall is attached via a protection wall support to form a filling space between the block protection wall and the front wall. The filling space is filled with the packing material.

In this way, these blocks are placed in a substantially horizontal state along the slope and stacked in a stack while engaging the front edge of the plate-shaped block with the rear edge of the front wall forming block. In addition, since the flat sand layer is formed into a sandwich shape by filling the sand between the plate-like blocks, and each soil layer is connected by the sand filled into the communication hole formed in each plate-like block, A relatively lightweight foamed resin block and relatively heavy earth and sand can be integrated quickly and reliably in layers to cooperate, ensuring a stable function as a retaining wall. And at the same time reduce construction costs.

In addition, a block protection wall is mounted via a protection wall support in front of the front wall formed by the front wall forming block made of foamed resin, and a filling space is provided between the block protection wall and the front wall. Due to the formation, the block protection wall can be constructed quickly and easily, and the construction efficiency of the retaining wall can be improved.

(3) In the present invention, the depth of each plate-like block is formed so as to gradually increase from the bottom to the top.

In this way, in the retaining wall according to the present invention, the contact area of the lower end surface that comes into contact with the ground is reduced, and the upper portion gradually projects rearward, so that the so-called top-heavy state is obtained. As a result, the position of the center of gravity can be set at the upper rear side, and it is possible to apply a leaning force appropriately opposing the earth pressure on the back. As a result, when the earth retaining wall A receives the earth pressure on the back side even in normal times and even during an earthquake, the moment of inertia acts on the earth pressure side on the back side, and the sliding safety factor of the earth retaining wall and The fall safety rate can be secured on the safe side.

In addition, by adopting the shape of a tube heavy, the amount of floor moat can be reduced, so that an economical cross section design of the retaining wall can be achieved. (4) In the present invention, a locking groove for locking the protection wall support is formed in the front wall forming block by notching in the vertical direction, and the protection wall support is inserted into each locking groove. Therefore, a block protection wall is erected between the protection wall supports adjacent to each other in the left-right direction.

In this manner, the block protection wall can be easily attached with a simple structure, and the workability of the construction of the retaining wall can be secured satisfactorily.

(5) In the present invention, the stacking block includes a pair of front and rear vertical walls having a communication vertical hole penetrating in the vertical direction, and a communication hole extending between the center portions of both vertical walls and vertically penetrating the center portion. A vertical wall having a communication vertical hole penetrating in the vertical direction, and a communication hole projecting from the center of the vertical wall and vertically penetrating in the center of the vertical wall. It has a half-split block formed from a protruding horizontal wall, and the vertical wall of the basic block and the half wall of the half-split block are partially engaged in the front-rear direction in a superimposed state. The half-blocked protruding horizontal walls are arranged between the vertical walls of the block and stacked one by one upward.The communicating vertical holes formed in the front wall of each basic block and the protruding horizontal walls of each half-block are formed. With the communication hole in the vertical direction, and The communication holes formed in the horizontal wall and the communication vertical holes formed in the vertical wall of each half-split block are vertically communicated with each other. Forming an elongating earth pillar, a block protection wall is attached via a protection wall support in front of the front wall formed by the vertical wall and the protruding horizontal wall located in the front row, and the block protection wall and each A filling space is formed between the vertical wall and the filling space.

In this manner, since the earth pillars extending in the vertical direction are formed by the earth and sand filled in the holes communicating in the vertical direction, the connection between the blocks in the front-rear and left-right directions is strengthened and integrated. Wall can be formed.

In addition, the total weight of the wall can be set to a desired weight by the amount of soil to be filled, so that the wall can be prevented from sinking and the wall itself can be prevented from collapsing due to the back surface earth pressure. As a result, the required stability of the block structure can be sufficiently ensured. In addition, in front of the front wall formed by the foaming resin front wall forming block, The lock protection wall is mounted via the protection wall support to form a filling space between the block protection wall and the front wall, and the filling space is filled with the filling material. This makes it possible to protect the front wall made of foamed wood, which is vulnerable to ultraviolet rays, fire (heat), impacts, etc., and to make the retaining wall a semi-permanent structure.

(6) In the present invention, the number of basic blocks and half-blocks arranged in the depth direction is gradually increased from the lower stage toward the upper stage.

In this way, the contact area of the lower end surface that comes into contact with the ground is reduced, and the upper part is gradually made to protrude backward, so that a so-called top heave state can be achieved. It can be placed on the upper side to counter the earth pressure on the back, and even in normal times and even in the event of an earthquake, the safety rate of sliding and falling when the earth retaining wall receives the earth pressure on the back On the safe side ο

(7) According to the present invention, the vertical wall and the protruding horizontal wall located in the front row are formed with notches in the vertical direction to lock the protection wall support. The block protection wall is erected between the adjacent protection wall supports in the left and right direction.

In this way, the block protection wall can be easily attached with a simple structure, and good workability can be secured.

(8) In the present invention, the filling space is filled with the watertight packing material.

In this way, the watertightness of the front of the retaining wall can be ensured well, and the retaining wall can function as a retaining wall such as a storage pond or a revetment retaining wall. The revetment work period and construction cost can be greatly reduced.

(9) According to the present invention, the interleaving body is disposed along the front surface of the front wall, and the watertight filling is performed in the filling space formed between the interleaving body and the block protection wall. It is full of things.

In this way, the watertight packing comes into close contact with the trimming interposer and the block protection wall, but since the trimming intermediary and the block are separated in the trimmed state, the watertight packing is separated from the block. Even if the vertical displacement of the block protection wall is different from that of the block protection wall, no stress is applied to the block protection wall. Therefore, the water blocking effect of the block protection wall and the watertight packing is well ensured, and the safety as a revetment retaining wall can be secured.

At this time, the intermediary body for edging performs the water blocking function by closely adhering to the front wall surface of the block, and from this point, the water blocking effect is also secured well, and the safety as a revetment retaining wall is secured. can do.

(10) In the present invention, the interposition body for trimming is formed in a thin plate shape from the same foamed resin material as the block.

In this way, by reducing the weight of the trimming interposition body, the increase in the weight of the wall body is reduced, the workability is improved, and the trimming state with the block is ensured. This prevents the transmission of stress from the block to the block protection wall.

(11) In the present invention, a foundation and floor slab is laid on the retaining wall construction site, and the building blocks are stacked on the foundation and floor slab, and a block protection wall is erected in front of the stacked building blocks. The base and floor slab has a front part that projects forward from the block protection wall.

In this way, by setting the ground contact area of the foundation and floor slab to the retaining wall construction site large, the applied load pressure can be dispersed, and the ground support force can be greatly stabilized. As a result, a retaining wall can be constructed on soft ground. Moreover, since the retaining wall is constructed by laminating foam blocks and earth and sand, the specific gravity of the retaining wall itself can be set to half that of soil and concrete (for example, 1.1). The cost of foundation treatment for soft ground can be reduced.

(12) In the present invention, the foundation and floor slab is composed of a pair of front and rear water stop walls buried in the retaining wall construction site, and a ceiling erected between the upper end edges of both water stop walls and exposed to the retaining wall construction site. A wall is provided, and the water stop wall and the ceiling wall are formed in a side view gate type.

In this manner, the length of the so-called brie permeation path formed on the lower surface of the base and floor slab can be set to be long, and the permeated water penetrating from the bottom surface of the retaining wall can be set as the base and floor slab, Water can be reliably stopped by the block protection wall having the waterproof effect. Therefore, due to infiltration water that pushes up from the bottom of the base and floor slab, Buoyancy can be prevented.

Also, even if buoyancy acts to a small extent, stability can be ensured by the size of its own weight.

(13) In the present invention, a block protection wall is placed substantially at the center of the base and floor slab, and the joint between the block protection wall and the base and floor slab is sealed from the front with a waterproof material. In this way, it is possible to ensure good watertightness at the joint between the block protective wall and the foundation / slab.

Here, the retaining wall needs to be free of buoyancy because its own weight is medium and light.However, in the present invention, it is possible to ensure good watertightness as described above. Buoyancy can be prevented.

Therefore, the retaining wall according to the present invention can also function as a revetment retaining wall for a storage pond or the like, and the revetment work period and construction cost can be significantly reduced.

In addition, the waterproofing material sealed from the front of the block protection wall can prevent the block protection wall from sliding forward, thereby strengthening the structure of the retaining wall.

Claims

Scope of word blue

1. A retaining wall structure constructed by stacking foaming resin building blocks along the slope,

A communication hole that penetrates the stacking block in the vertical direction is formed, the stacking blocks are stacked one on top of the other, and the gap between the top and bottom of each stacking block is filled with earth and sand. Are connected up and down,

A retaining wall structure in which a block protection wall is erected in front of the stacked building blocks, and a filling material is filled between a rear surface of the block protection wall and a front surface of the stacked building blocks. .

2. The stacking block includes a front wall forming block, and a plate-like block that is placed in a substantially horizontal state with the front end edge engaged with the rear end edge of the front wall forming block. The blocks are sequentially stacked upward to form a flat earth and sand filling space between the vertically adjacent plate-like blocks, and a communication hole penetrating vertically is formed in each of the plate-like blocks. The earth and sand filled in the earth and sand filling space are connected vertically by the earth and sand filled in each communication hole,

In front of the front wall formed by the front wall forming block, a block protection wall is attached via a protection wall support to form a filling space between the block protection wall and the front wall. The retaining wall according to claim 1, wherein a filling is filled in the inside.

3. The retaining wall structure according to claim 2, wherein a depth of each plate-like block is formed so as to gradually increase from a lower level to an upper level.

4. In the front wall forming block, lock grooves for locking the protective wall support are formed by notching upward and downward, and the protective wall support is inserted into each lock groove to lock. The retaining wall structure according to claim 2 or 3, wherein a block protective wall is provided between adjacent protective wall supports in the left-right direction.

5. The building blocks A basic block formed by a pair of front and rear vertical walls having a communication vertical hole penetrating vertically and a erected horizontal wall erected between the center portions of the two vertical walls and having a communication hole penetrating vertically in the center portion. ,

A half-walled block formed by a vertical wall having a communication vertical hole penetrating vertically, and a projecting horizontal wall having a communication hole protruding at the center of the vertical wall and penetrating vertically at the center. With

The vertical wall of the basic block and the vertical wall of the half-split block are partially engaged in the front-back direction in a superimposed state, and the protruding horizontal wall of the half-split block is placed between the vertical walls of the upper and lower basic blocks. Each of the basic blocks is vertically connected with the communication vertical hole formed in the front wall of each basic block and the communication hole formed in the protruding horizontal wall of each half-split block. The vertical and horizontal communication holes formed in the vertical wall of each half-split block are vertically filled with earth and sand, and the vertical holes are filled with earth and sand. Forming earth pillars extending in the direction

A block protection wall is attached via a protection wall support in front of the front wall formed by the vertical wall located in the front row and the protruding horizontal wall, and the space between the block protection wall and each vertical wall is filled. The retaining wall structure according to claim 1, wherein a space is formed, and a filling material is filled in the filling space.

6. The retaining wall structure according to claim 5, wherein the number of the basic blocks and the half-split blocks arranged in the depth direction is gradually increased from the lower part to the upper part.

7. On the vertical wall and the protruding horizontal wall located in the front row, locking grooves for locking the protection wall support are formed by notching in the vertical direction. The retaining wall structure according to claim 5 or 6, wherein a block protection wall is provided between the protection wall supports adjacent to each other.

8. The retaining wall structure according to any one of claims 1 to 7, wherein the filling space is filled with a watertight filling material.

9. The edging interposer was placed along the front surface of the front wall, and the watertight filling was filled in the filling space formed between the edging interposer and the protection wall. The retaining wall structure according to any one of claims 1 to 8, characterized in that:

10. The retaining wall structure according to claim 9, wherein the interposition intervening body is formed in a thin plate shape from the same foamed resin material as the block.

1 1. Lay the foundation and floor slab at the retaining wall construction site, stack the stacking blocks on the foundation and slab, and set up a block protection wall in front of the stacked blocks.

10. The retaining wall structure according to any one of claims 1 to 10, wherein the base and floor slab has a front portion projecting forward from the block protection wall.

1 2. The foundation and floor slab is equipped with a pair of front and rear water stop walls buried in the retaining wall construction site, and a ceiling wall that is installed between the upper edges of both water stop walls and exposed to the retaining wall construction site. The retaining wall structure according to claim 11, wherein the water blocking wall and the ceiling wall are formed in a side view portal type.

1 3. A block protection wall is placed at the approximate center of the base and floor slab, and the joint between the block protection wall and the base and floor slab is sealed from the front with a waterproof material. The retaining wall structure according to claim 11 or 12.