JP3972364B2 - Retaining wall - Google Patents

Description

The present invention relates to retaining walls that form a vertical wall by superposed precast concrete blocks vertically while being juxtaposed in the lateral direction.

  Conventionally, as this type, a vertical wall and a bottom wall are connected in an L shape, and a retaining wall (for example, a retaining wall to be bolted to an adjacent retaining wall is integrally formed at both ends) (for example, Patent Document 1), a large L-shaped retaining wall block having a standing wall portion and a bottom plate portion, and having a retaining wall connecting the upper portion of the bottom plate portion and the rear portion of the standing wall portion (for example, Patent Document 2) It has been known.

  In addition, the L-type retaining wall as described above has been proposed in which the retaining wall is divided in order to be limited in size due to road transportation or the like. As an example, a pair of bottom walls and a front wall are separated. A precast reinforced concrete product with a rib structure is produced, and a retaining wall (for example, Patent Document 3) that connects a PC steel rod inserted into the rib to the end of the rib to connect the two, upside down There are blocks (for example, Patent Document 4) in which blocks are overlapped and connected by deformed reinforcing bars.

  In the retaining wall of the above-mentioned Patent Document 3, the bottom plate and the front wall are divided and connected with a PC steel rod, so that the assembly work can be simplified and improved in efficiency, and the conventional problems can be solved. If the size of the front wall is increased, transportation and installation may be restricted.

On the other hand, in the thing of patent document 4, the block can be reduced in size by overlapping the blocks. However, a flat block of the same shape is used, and the block requires a wall thickness based on the earth pressure applied to the lower part of the standing wall, so that the block on the upper side of the standing wall has an extra thick part in structure. This is uneconomical and also hinders weight reduction. Further, since the front and rear surfaces of the flat block are formed in the same shape, the standing wall portion can be constructed by overlapping without considering the front and rear directions, but the front surface of the standing wall portion that appears outside is monotonous. There is a face.
Japanese Patent Laid-Open No. 62-288221 JP 58-218523 A JP-A-10-176338 JP 2001-336163 A

Accordingly, the present invention is transported, it possible to reduce construction costs, and to provide a retaining wall that can be obtained different appearance.

The invention of claim 1, precast concrete blocks, the vertical ribs provided on the back surface of the plate-shaped body, provided with a longitudinal bore for inserting a consolidated unit, stacked together vertically while being juxtaposed in the lateral direction in retaining wall having a vertical wall portion formed by connected by the connecting means of the block vertical direction, the block over the standing wall portion is formed thin body than the block below, to match the back surface of the block to overlay, the surface side of the standing wall portion due to a difference in thickness of the block in which the step portion is formed.

The invention according to claim 2, wherein the block is provided with a plurality of the vertical ribs on the back surface of the flat plate-like main body, the vertical hole provided in the longitudinal ribs, said longitudinal ribs widthwise end portion of said body the provided having a contact end face vertical ribs are in contact with each other those of the adjacent blocks in the width direction, and has a longitudinal rib each other overlap if cormorants Polymerization upper and lower surfaces of said block overlap vertically.

In the invention of claim 3, the block is provided with a central vertical rib on the center side of the main body, and the width of the central vertical rib is approximately twice the width of the vertical rib at the end in the width direction.

The invention of claim 4 is pre-Symbol a base block made of precast concrete provided in the lower portion of the vertical wall portion, and forming a bottom plate portion along the base block.

The invention of claim 5, in which the bottom plate portion is formed by the blocks used in the upright wall.

According to the concrete retaining wall block of claim 1, since the blocks are juxtaposed in the left-right direction and overlapped with each other to form the standing wall portion, each block is small and easy to carry and construct. Can be done. Then, superimposed so as to match the back surface of the block, the step portion is formed on the surface side of the standing wall portion due to a difference in thickness of the block, you can build a retaining wall having a vertical wall portion of different appearance.

Further, since the back surface earth pressure of the standing wall portion decreases toward the upper portion, a retaining wall having a lean structure can be constructed by forming the upper block thinly .

According to the concrete retaining wall block of claim 2, since the blocks are arranged side by side in the left-right direction and overlapped vertically to form the standing wall portion, each block is small and easy to carry and construct. In the standing wall portion that is arranged in parallel in the left-right direction and overlapped vertically, the block has adjacent vertical ribs in the left-right direction and vertical ribs that are overlapped in the vertical direction. The vertical rib structure is continuous in the vertical direction, and the vertical blocks can be effectively integrated by the continuous vertical rib .

  According to the concrete retaining wall block of claim 3, on one side surface of the standing wall portion, the portion where the adjacent vertical ribs abut and the central vertical rib have substantially the same width, and both have the same appearance. Appears.

Further, according to the invention of claim 4 , since the foundation block is made of precast concrete, it is excellent in strength and can improve workability, and by forming the bottom plate portion along this foundation block, An L-shaped retaining wall can be constructed.

According to the invention of claim 5 , by making the blocks used for the bottom plate portion and the standing wall portion common, it is possible to reduce the product cost, the construction management cost, etc., and the overall cost can be reduced. .

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new configuration different from the conventional one, a block to which an unconventional function is added and a retaining wall are obtained, and the block and the retaining wall are described respectively.

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show a reference example of the present invention. FIG. 1 is a perspective view of the retaining wall 101 as seen from the back side. The back surface of the blocks 1 and 1A forming the standing wall portion 102 of the retaining wall 101 is one side surface (one side surface in the thickness direction), and the other surface is the other. It demonstrates as a side surface (thickness direction other side surface).

  As shown in FIGS. 1 to 3, etc., the concrete retaining wall block 1 includes a main body 2 having a flat plate shape, a plurality of end portions provided on one side of the front and back surfaces of the main body 2, and central vertical ribs 3 and 4. These vertical ribs 3 and 4 have the same height as the main body 2. The main body 2 has a rectangular shape wide in the width direction of the standing wall portion 102 of the retaining wall 101, and the width is almost twice the height. The end vertical ribs 3 are respectively provided at both ends of the main body 2 and have a substantially trapezoidal cross section. The end vertical rib 3 has a width-direction end surface as a contact end surface 3A. The contact end surface 3A is a main body. 2, the abutting end faces 3 </ b> A and 3 </ b> A abut against the blocks 1 and 1 that are orthogonal to the front and back surfaces and are adjacent in the width direction. Further, the end vertical rib 3 is provided with a tapered surface 3B on the surface opposed to the contact end surface 3A, and the taper surface 3B is formed so that the end vertical rib 3 is narrowed toward one side of the main body 2 and One side surface 3 </ b> C of the partial vertical rib 3 is formed substantially parallel to the main body 2. In addition, superposed upper and lower surfaces 3D and 3D which are flush with the upper and lower surfaces of the main body 2 are formed above and below the end vertical rib 3. The center-side vertical rib 4 has a shape in which almost two end vertical ribs 3 and 3 are combined, and has a substantially trapezoidal cross section including tapered surfaces 4B and 4B and one side surface 4C on both sides in the width direction. The tapered surfaces 4 </ b> B and 4 </ b> B are formed by narrowing the central longitudinal rib 4 toward one side of the main body 2, and the one side surface 4 </ b> C is formed substantially parallel to the main body 2. In addition, on the upper and lower sides of the center-side vertical rib 4, superposed upper and lower surfaces 4D and 4D that are flush with the upper and lower surfaces of the main body 2 are formed. The blocks 1 and 1A are made of precast concrete.

  As shown in FIG. 2, the end vertical ribs 3 are formed by penetrating vertical holes 5 and 5 side by side in the thickness direction, and both end portions of the vertical holes 5 and 5 are enlarged stepped holes 5A and 5A. It has become. Further, the center-side vertical rib 4 is provided with stepped holes 5A and 5A aligned in the width direction, and the vertical holes 5 and 5 aligned in the thickness direction corresponding to the stepped holes 5A are formed therethrough.

  As shown in FIG. 4 and the like, the block 1A has the same configuration as the block 1 except that the width of the main body 2 is half that of the block 1 to form a substantially square shape, and the central vertical rib 4 is not provided. is there. Moreover, as shown in FIG. 6, the other side surface of the blocks 1 and 1A is a flat surface, and the pattern 6 is formed.

  The retaining wall 101 includes a foundation portion 103. The foundation portion 103 is provided between the standing wall portion 102 and the bottom plate portion 104. The foundation blocks 11 made of precast concrete are arranged in the width direction of the retaining wall 101. . The basic block 11 is substantially L-shaped with a front surface 12 in the vertical direction and a bottom surface 13 in the horizontal direction, and includes a top surface 14 on which the block 1 is placed and a vertical rear surface 15 that connects the blocks 1. .

  In this example, the bottom plate portion 104 is formed by arranging the blocks 1 and 1A in the width direction of the retaining wall 101 and in the front-rear direction of the retaining wall 101, and the longitudinal holes 5 are formed in the blocks 1 and 1A in the front-rear direction. Continuous in the front-rear direction.

  In order to connect the blocks 1 and 1A of the upright wall portion 102 in the vertical direction, a connecting means 21 is provided. As shown in FIG. 5, a reinforcing bar or a PC steel material is used for the connecting means 21.

  Next, the construction example will be described together with the construction examples. On the site, a foundation is formed, and a foundation material layer such as rubble is spread on the foundation to form a foundation material layer. A foundation concrete layer is formed by in-situ casting, a mortar layer is laid on the foundation concrete layer, the upper surface of the mortar layer is formed flat, and the foundation blocks 11, 11,. A base portion 103 is formed. In this case, the foundation blocks 11, 11... May be connected to each other by a reinforcing bar, a PC steel material, or the like.

  On the upper surface 12 of the base portion 103, as a first step, the blocks 1, 1... Are arranged in the width direction so that the adjacent contact end surfaces 3A, 3A are in contact with each other, and the blocks 1, 1. The block 1A is arranged at the end. On the first block 1, 1,..., The second block 1, 1,... Are overlapped and arranged, and in this case, the joint of the first block 1, 1 (contact end surfaces 3A, 3A). The second block 1 is overlapped with the center of the upper block 1 on the end vertical ribs 3 and 3 arranged adjacent to each other in the lower block 1. The side vertical ribs 4 are overlapped, that is, the upper overlapping surfaces 3D and 3D of the end vertical ribs 3 and 3 are overlapped with the lower overlapping surface 4D of the central side vertical rib 4 and the upper and lower vertical holes 5, 5, 5, and 5 are in communication. The position is adjusted. Further, the end vertical ribs 3, 3 arranged adjacent to each other on the upper block 1 overlap the central vertical rib 4 of the lower block 1, and the upper and lower vertical holes 5, 5, 5, 5 are overlapped. 5 communicates. Further, the third-stage block 1 is similarly stacked on the second-stage block 1 while being shifted by a half in the width direction, and the blocks 1A are arranged at the end of each stage as necessary. Then, the reinforcing bars as the connecting means 21 are inserted into the vertical holes 5, 5, and so on, and the vertical holes 5 including the stepped holes 5 </ b> A are filled with a filler (not shown) such as mortar. Connect 1A up and down. In this case, the upper and lower blocks 1, 1 </ b> A may be connected to the lower base portion 103 by a base connecting means such as a reinforcing bar.

  In the construction of the bottom plate portion 104, the blocks 1 and 1A are used, and the blocks 1 and 1A are arranged in the width direction and arranged in the front-rear direction in the same manner as the standing wall portion 102. 1,1A are connected. That is, the blocks 1 and 1A are vertically stacked in the standing wall portion 102, whereas the blocks 1 and 1A are arranged in the front and back in the bottom plate portion 104. In the bottom plate 104, the blocks 1 and 1A are arranged with the longitudinal ribs 3 and 4 facing upward. Thus, since the standing wall portion 102 is composed of a plurality of blocks 1 and 1A, the individual blocks 1 and 1A can be small in size, and can be easily transported and installed. Depending on the site, large heavy machinery can be used. It becomes unnecessary.

  The back surface of the retaining wall 101 constructed in this way is filled with a backfill material and backfilled. A flat surface having the pattern 6 of the blocks 1 and 1A forming the standing wall portion 102 is formed on the front surface of the retaining wall 101. On the other hand, although not shown, if the standing wall portion 102 is formed with the blocks 1 and 1A facing in the opposite directions, a flat surface appears between the vertical ribs 3, 3, and 4 on the front surface of the retaining wall 101, and continues vertically. The vertical ribs 3, 3, and 4 exhibiting a columnar appearance.

Thus, in the present reference example, retaining wall blocks 1 forming the vertical wall 102 joined by a precast concrete blocks stacked together vertically while being juxtaposed in the left right direction vertical coupling means 21, In 1A, vertical ribs 3 and 4 are provided on one side surface of the flat plate-like main body 2, and the vertical holes 5 for inserting the connecting means 21 are provided. Since the standing wall portion 102 is formed by superimposing, the individual blocks 1 can be small and can be easily transported and constructed. If the other side surface of the block 1 is on the outside, the standing wall portion 102 that forms a flat surface with the other flat side surface continuous can be constructed. It is possible to construct the retaining wall 101 including the standing wall portions 102 having different appearances by selecting the position of the surface of the block 1 with the appearance of the vertical ribs 3, 3, and 4 appearing on each other.

Thus, in the present reference example, in response to claim 2, form to the vertical wall 102 connecting the precast concrete blocks stacked together vertically while being juxtaposed in the lateral direction by the vertical connecting means 21 In the retaining wall block 1, 1 </ b> A, a plurality of vertical ribs 3, 4 are provided on one side surface of the flat plate-like body 2, and vertical holes 5 for inserting the connecting means 21 are provided in the vertical ribs 3, 4. The rib 3 is provided at an end in the width direction of the main body 2 and has contact end surfaces 3A and 3A that contact the vertical ribs 3 and 3 of the blocks 1 and 1 adjacent in the width direction, and the blocks 1 and 1 that overlap vertically. since having longitudinal ribs 3,3,4,4 polymerization upper and lower surfaces 3D of the Judges overlap, 3D, 4D, and 4D, to form a vertical wall portion 102 are overlapped vertically while being juxtaposed block 1 in the lateral direction Therefore, each block 1 is small In the standing wall portion 102 formed in parallel in the left-right direction and overlapped vertically, the block 1 is composed of adjacent vertical ribs 3, 3 in the left-right direction. And the vertical ribs 3, 3 and 4 which overlap in the vertical direction are in contact with each other to form a vertical rib structure which is continuous in the vertical direction. Can be integrated. If the other side surface of the block 1 is on the outside, the standing wall portion 102 that forms a flat surface with the other flat side surface continuous can be constructed. The retaining wall 101 having the standing wall portion 102 having a different appearance can be constructed by selecting the position of the surface of the block 1 by forming the appearance of the vertical ribs 3, 3, and 4.

In this way, in the present reference example, in correspondence with claim 3, the center-side vertical rib 4 is provided on the center side of the main body 2, and the width of the center-side vertical rib 4 is the vertical rib 3 at the end in the width direction. 3 is approximately twice the width of 3, and on one side of the standing wall 101, the portion where the adjacent vertical ribs 3, 3 abut and the central vertical rib 4 have substantially the same width, and both have the same appearance. Appears.

Also, in this way the reference example, the retaining wall 101 having a front Symbol vertical wall portion 102, a vertical wall portion 102 toward the surface side of the selective vertical wall 102 and one side surface and another side surface of the block 1 forming Therefore, the standing wall portion 102 having a different appearance can be obtained using the block 1 that is basically common.

Thus, in this reference example, in accordance with claim 4 , since the foundation block 11 made of precast concrete is provided at the lower part of the standing wall portion 102 and the bottom plate portion 104 is formed along the foundation block 11, the foundation block 11 is It is made of precast concrete, has excellent strength, and can improve workability. By forming the bottom plate portion 104 along the foundation block 11, an L-shaped retaining wall can be constructed.

Further, in this reference example, since the bottom plate portion 104 is formed by the blocks 1 and 2 used for the standing wall portion 102 in correspondence with the fifth aspect , the blocks 1 and 2 used for the bottom plate portion 104 and the standing wall portion 102 are used. By sharing 1A, it is possible to reduce product costs, construction management costs, etc., and to reduce overall costs.

  Further, as an effect of the embodiment, the standing wall portion 102 is arranged at the upper and lower stages, and the blocks 1 and 1A are arranged so that the central vertical rib 4 overlaps the adjacent end vertical ribs 3 and 3, so that the end portion Since the contact portions that are the joints of the vertical ribs 3 and 3 do not continue in the vertical direction but appear in a staggered manner, the upper and lower blocks 1 and 1A are integrated according to the arrangement, and the structure is strengthened.

7 to 11 show a first embodiment of the present invention. The same reference numerals are given to the same portions as those in the above-mentioned reference example, and detailed description thereof will be omitted. In this example, the block of the standing wall portion 102 is shown. 1 and 1A, the main body 2 is formed thinner in the upper one than in the lower one. The thicknesses of the longitudinal ribs 3 and 4 are all constant. In addition, the thickness of the main body 2 of the blocks 1 and 1A is set in consideration of the back earth pressure. In this example, as shown in FIG. 7, the blocks 1, 1 </ b> A have one vertical hole 5 in the end vertical rib 3, and one vertical hole 5 on each side of the central vertical rib 4. Is forming.

The foundation 103 is made of precast concrete plate-like foundation blocks 11A arranged in the width direction of the retaining wall 101, and the bottom slab 104 is arranged with precast concrete blocks or by placing concrete on-site. Or the blocks 1 and 1A are arranged in the same manner as in the reference example .

Thus, in this example, it superposed so as to align the back surface of the block 1, 1A, step portions 102A appears on the vertical wall portion 102 by the difference in thickness on the front surface of the block 1, 1A.

Thus, in this embodiment , corresponding to claim 1, the precast concrete blocks 1 and 1A are provided with the vertical ribs 3 and 4 on the back surface of the flat plate-like main body 2, and the vertical holes into which the connecting means 21 are inserted. 5, a retaining wall having a standing wall portion 102 formed by connecting blocks 1, 1 </ b> A, which are arranged in parallel in the left-right direction and overlapped vertically, by connecting means 21 in the up-down direction, The blocks 1 and 1A are formed so that the main body 2 is thinner than the lower blocks 1 and 1A, and the back surfaces of the blocks 1 and 1A are overlapped with each other. A stepped portion 102A is formed, and the blocks 1 and 1 are juxtaposed in the left-right direction and overlapped vertically to form the standing wall portion 102. Therefore, each block 1 can be small and can be easily transported and constructed. It can be carried out. Further, the upper block 1, 1A on the upright wall 102 has a body 2 that is thinner than the lower block 1, 1 </ b> A, and the back surface earth pressure of the upright wall 102 becomes smaller toward the top, so the upper block 1 , 1A can be formed thin, so that a retaining wall having a lean structure can be constructed, and the same actions and effects as the above-described reference example can be achieved corresponding to each claim.

12 to 17 show a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the above-mentioned reference example and embodiment, and detailed description thereof will be omitted. The uppermost block 1B, 1C of 102 is composed of a main body 2A having no vertical ribs. The block 1B is formed thicker than the lower block 1, the width of the block 1B is the same as the block 1, and the width of the block 1C is the same as the block 1A. In this example, each of the blocks 1 and 1 </ b> A has one vertical hole 5 formed in the end vertical rib 3, and one vertical hole 5 formed on each side of the central side vertical rib 4. The thicknesses of the blocks 1B and 1C are made thinner than the combined thickness of the main body 2 of the blocks 1 and 1A and the vertical ribs 3 and 4. A step 102A is also formed between the lower blocks 1 and 1A and the upper blocks 1B and 1C.

  Thus, the cost of the entire retaining wall can be reduced by configuring the blocks 1B and 1C near the uppermost step having a small back surface earth pressure or the vicinity thereof in a flat plate shape.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, the number of stages of blocks provided on the standing wall portion or the bottom plate portion can be selected as appropriate.

As described above, according concrete retaining wall blocks and retaining walls of the invention, transportation, and allows a reduction in construction costs, it is possible to provide a retaining wall that can be obtained with different appearance by both sides.

It is a perspective view of the block showing a reference example of the present invention. It is a top view of a block same as the above. The same is the front view of the block, and the pattern is not shown. It is a perspective view of a block without a center side vertical rib same as the above. It is a perspective view of the back side of the retaining wall under construction same as the above. It is a perspective view of the front side of the retaining wall under construction same as the above. FIG. 7A is a plan view of a block showing a first embodiment of the present invention, FIG. 7A shows an upper block, FIG. 7B shows a middle block, and FIG. 7C shows a lower block. It is a perspective view of the back side of the retaining wall under construction same as the above. It is a perspective view of the front side of the retaining wall under construction same as the above. It is a perspective view of the back side of the retaining wall before backfilling same as the above. It is a perspective view of the front side of the retaining wall before backfilling same as the above. It is a top view of the uppermost block which shows 2nd Example of this invention. The same is the front view of the block, and the pattern is not shown. It is a perspective view of the back side of the retaining wall under construction same as the above. It is a perspective view of the front side of the retaining wall under construction same as the above. It is a perspective view of the back side of the retaining wall before backfilling same as the above. It is a perspective view of the front side of the retaining wall before backfilling same as the above.

Explanation of symbols

1 Block 2 Body 3 End Vertical Rib 3A Abutting End Face 4 Center-side Vertical Rib
11 Basic block
101 retaining wall
102 Standing wall
103 Foundation
104 Bottom plate
102A Stepped part

Claims (5)

Precast concrete blocks, the vertical ribs provided on the back surface of the plate-shaped body, provided with a longitudinal bore for inserting a consolidated unit, the blocks stacked together vertically while being juxtaposed in the lateral direction in the vertical direction In the retaining wall provided with the standing wall portion formed by being connected by the connecting means , the block above the standing wall portion is formed so that the main body is thinner than the lower block, and the blocks are overlapped so that the back surfaces of the blocks are aligned. The retaining wall is characterized in that a step portion is formed on the surface side of the standing wall portion due to a difference in thickness . The block provided with a plurality of the vertical ribs on the back surface of the flat plate-like main body, the vertical hole provided in the longitudinal ribs, said longitudinal ribs provided on the widthwise end portion of the body, in the width direction having a contact end face vertical ribs between the adjacent blocks abut, retaining wall according to claim 1, characterized in that it has a longitudinal rib each other overlap if cormorants Polymerization upper and lower surfaces of said block overlap vertically. 3. The block according to claim 2, wherein a central vertical rib is provided on the central side of the main body, and the width of the central vertical rib is approximately twice the width of the vertical rib at the end in the width direction. Retaining wall. The retaining wall according to any one of claims 1 to 3, wherein a foundation block made of precast concrete is provided at a lower portion of the standing wall portion, and a bottom plate portion is formed along the foundation block. 4. Retaining walls, wherein the said base plate portion is formed by the blocks used in the upright wall.

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