JP3010619U - Combination stacking block - Google Patents

Abstract

(57) [Summary] [Purpose] By combining two types of stacking blocks, various forms of slope curve retaining wall construction can be easily and accurately handled, and it is possible for general workers who do not have special skills to implement and shorten the construction period. To do. [Structure] A rectangular plate-shaped front body (2,
6) and a rear body (3, 7), and a connecting block (4, 8) integrally connecting the front body and the rear body with a predetermined interval, in which both end surfaces of the front body and the rear body are provided. (2s, 3s, 6s, 7s) having a constant inclination angle with respect to the front-rear direction, and a block (A block) formed on a surface inclined inward toward the rear, and both end surfaces of the front body and the rear body. Has a constant inclination angle with respect to the front-back direction,
And a block (B block) formed on a surface that is inclined outward toward the rear, and these two types of blocks are arranged so as to be moved in the front-rear direction and rotationally with respect to each other to correspond to a curve.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention accurately responds to the construction of a retaining wall (hereinafter, referred to as “gradient curve retaining wall”) that has a constant gradient and curves with a constant curvature by combining two types of blocks. This relates to a combination loading block that can be easily installed.

[0002]

[Background of device]

 Conventionally, for retaining wall construction work such as revetment work and earth retaining work, for example, the construction method shown in the front view of FIG. 14 and the cross-sectional view of FIG. 14 has been adopted. That is, first, the embankment 20 is ground to a certain slope to form an excavation slope 21, and a groove 23 along the length direction of the retaining wall is formed on the flat ground 22 at the lower end of the slope 21. Form to a depth. Then, after crushing stones 24 in the groove 23 so as to have a certain thickness and rolling them, a raw concrete is placed in a formwork (not shown) partitioned by on-site construction. A retaining wall foundation 25 is formed.

Next, after waiting for the completion of the foundation 25, first, as a first stage, for example, rectangular stacking blocks 26 are arrayed at a predetermined number and at a predetermined interval. A lining stone 27 is laid on the back side, and a gap concrete 28 for fixing the loading block 26 is filled in the gap between the loading blocks 26.

In this way, the stacks are sequentially stacked up to the intended height of the retaining wall.

[0005]

[Prior art]

 By the way, among the stacking blocks used for such retaining wall construction work, as shown in the front view (A), side view (B), and plan view (C) of FIG. 16, a rectangle having a predetermined thickness is used. There is a plate-shaped front body 26f and a rear body 26b, and a connecting body 26j that integrally connects the front body 26f and the rear body 26b with a predetermined gap. The stacking block 26 having such a shape is generally called a "flat stacking", and is arranged in a horizontal row so that both end surfaces of the front bodies 26f are brought into contact with each other and the front surfaces thereof are flush with each other. Then, the joints are piled up according to the above construction method so that the joints do not match in the vertical direction.

[0006]

[Problems to be solved by the device]

 However, in the above retaining wall construction, if the retaining wall extension is almost straight, there is no problem, but when it is a slope curve retaining wall, the retaining wall extension is different between the bottom stage and the top stage. There was a problem.

This difference is that when the slope curve retaining wall is convexly curved (“outer curve”), the retaining wall extension becomes shorter toward the uppermost stage, and conversely it is concavely curved (“inner curve”). Sometimes it gets longer. In the past, in order to adjust this, at the stacking stage, as shown in the front view in Fig. 17, when the curve is outside, (A) the joint 29 on the lower stage is widened and the joint 29 is gradually narrowed toward the upper stage. On the contrary, when the curve is an inward curve, the joint 29 is gradually widened toward the upper stage of (B) to absorb the difference.

However, such a method not only spoils the aesthetic appearance after completion, but also sets a varying joint interval in advance in the construction, and a skilled special engineer such as a mason carefully piles it up according to this. I had to go. Furthermore, it was necessary to fill the joints with mortar. Therefore, the work is complicated and the work efficiency is low, which causes the construction cost to increase.

When the radius of curvature is too small to be dealt with by the above method, as shown in the front view of FIG. 18, there is also adopted a method of laying a frontal, substantially triangular intermediate concrete 30. However, this method, as well as the above-mentioned method, impairs the aesthetics, reduces work efficiency, and increases the construction cost. In addition, since the adjacent blocks 26 are integrated by the body concrete 28, the blocks 26 are divided (commonly called “edge cutting”) by the intermediate concrete 30. There was a fear that it would be difficult to secure. In addition, in the actual site, there were many cases where the construction standard of the intermediate concrete 30 was not adhered to, and there was concern about the strength.

A method of making the shape of the stacking block 26 smaller as it goes up (or down) may be considered, but this also requires that several kinds of stacking blocks 26 be preformed and managed. This is also very complicated and difficult to realize. Therefore, the present invention has been made by paying attention to the above-mentioned various problems, and the purpose thereof is to combine two types of stacking blocks to construct a simple construction of various types of distribution curve retaining walls. It provides a combination stacking block that can handle the above.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the combination stacking block of the present invention is constructed as follows. In a stacking block composed of a rectangular plate-shaped front body and a rear body having a predetermined thickness, and a connecting body which integrally connects the front body and the rear body at a predetermined interval, A block (A block) whose both end faces have a certain inclination angle with respect to the front-rear direction and is inclined inward toward the rear, and both end faces of the front body and the rear body with respect to the front-back direction. It is characterized by comprising a block (B block) having a constant inclination angle and formed on a surface inclined outward toward the rear.

Further, both end surfaces of the front body and the rear body are formed in a curved shape along the front-rear direction, and a tangent line (s) in the front-rear direction thereof is inclined (x) inward toward the rear. (A block) and both end surfaces of the front body and the rear body are formed in a curved shape along the front-rear direction and the tangent line (s) in the front-rear direction is inclined outward (y) toward the rear. And a block (B block) which has been formed.

The curved surface along the front-rear direction may be a convex curved surface or a concave curved surface. Further, the front side width dimension of each of the blocks is formed differently, and the front side of the larger width block (A block or B block) has the smaller width side of the block (B block or A block). A convex surface portion (2a) having substantially the same length as the width is formed, and the wall thickness of the front body including the convex surface portion and the wall thickness of the front body of the block having the smaller width are set to be substantially the same. It is characterized by

[0014]

【Example】

 Next, a specific embodiment of the combination stacking block according to the present invention will be described in detail with reference to the drawings. FIG. 1 and FIG. 2 are overall perspective views showing each of a set of combination stacking blocks of this embodiment, and FIGS. 3 to 6 are plan views showing the combination arrangement state. In the present description, with reference to FIGS. 1 and 2, the arrow a is defined as the vertical direction, the arrow b is defined as the front-back direction, and the arrow c is defined as the width direction.

One stacking block (hereinafter abbreviated as “A block”) 1 is composed of a rectangular plate-shaped front body 2 and a rear body 3 each having a predetermined thickness and having a predetermined spacing. It is composed of two connecting bodies 4 and 4 which connect the front body 2 and the rear body 3 facing each other in the front-rear direction so as to be integrated, and are mainly formed by concrete molding.

Both end surfaces 2s of the front body 2 are formed as surfaces that have a constant inclination angle α with respect to the front-rear direction and that are inclined inward toward the rear. Similarly, both end surfaces 3s of the rear body 3 are also formed as a surface having a constant inclination angle β with respect to the front-rear direction and inclined inward toward the rear. In other words, in the plan view, the distances between the two end surfaces 2s, 3s of the front body 2 and the rear body 3 are formed in a tapered shape toward the rear.

Further, the front surface of the front body 2 is formed with a convex surface portion 2 a having a trapezoidal cross section and protruding forward. Next, the other stacking block (hereinafter abbreviated as "B block") 5 is formed by concrete molding similarly to the A block, and has a rectangular plate-like front shape with a predetermined thickness. It is composed of a body 6 and a rear body 7, and is composed of a single connecting body 8 which connects the front body 6 and the rear body 7 facing each other at a predetermined interval in the front-rear direction and which integrates them. .

The both end surfaces 6s of the front body 6 are formed as surfaces having a constant inclination angle β with respect to the front-rear direction and inclined outward toward the rear. Similarly, both end surfaces 7s of the rear body 7 are also formed to have a constant inclination angle β with respect to the front-rear direction and are inclined outward toward the rear. In other words, in a plan view, the front body 6 and the rear body 7 are formed such that the distances between the both end surfaces 6s and 7s are tapered backward toward the rear.

Further, each of the connecting bodies 4 and 8 has a rectangular vertical section and a prismatic shape extending in the front-rear direction, but is not limited to this. For example, plan views in FIGS. Alternatively, as shown in the side view, they may be formed into curved shapes 4a and 8a. The formation dimensions of the blocks A and B are set appropriately, but in the present embodiment, as shown in FIG. 3, the width dimension ratios L ₁ : L _{2 of the} front bodies 2 and 6 are , The distance between the contact points when the end portions 2t of both end surfaces 2s of the A block 1 and the midpoint 6c of both end surfaces 6s of the B block 5 are set to be approximately 2: 1. Has been done.

Further, the width dimension of the front bodies 2 and 6 of each block A and B is made larger than that of the rear bodies 3 and 7 by ΔL, and the height dimension of both blocks A and B is set to be the same. It Furthermore, the convex portion width Pa of the convex surface portion 2a of the front body 2 of the block A and the front surface width Pb of the front body 6 of the block B are set to be substantially the same, and the wall thickness of the front body 2 at the convex surface portion 2a is set. The thickness Qb of the front body 6 of the block B and the thickness Qb of the front body 6 of the block B are set to be the same.

Further, both side end surfaces 2s of the front body 2 of the A block are set to have an inclination angle α, and the inclination angles of both end surfaces 3s of the rear body 3 of the A block, and both sides of the front body 6 and the rear body 7 of the B block. The inclination angles of the end faces 6s and 7s are set to β of the same angle, and β> α is set. γ (= β-α) is appropriately set according to the arrangement of curved surfaces described later, and the inclination angles α and β are the thicknesses of the front bodies 2 and 6 and the rear bodies 3 and 7, It is appropriately selected in consideration of the size and strength of the block. In this embodiment, α = 43 ° and β = 45 ° are set.

Further, in the present embodiment, when the blocks are placed on a horizontal plane, the front body and the rear body of each block are formed to be vertical, but other than that, although not shown, It may be formed so as to be inclined rearward at a certain angle as appropriate. Usually, the excavation slope 21 is provided with a certain slope (commonly called “rolling”), but depending on the inclination state of the upper surface of the foundation 25, the block itself may be inclined. [Example of Combination Arrangement of A and B Blocks] The A and B blocks formed as described above are positioned by performing various combination arrangements as described below.

As shown in FIG. 4, first, the A block 1 and the B block 5 are arranged on the left and right so as to be aligned in the width direction c, and the side end surfaces 2s and 6s of the front bodies 2 and 6 are brought into contact with each other. Place them in contact with each other and rub them together. At this time, both end surfaces 3s and 7s of the rear bodies 3 and 7 have a small gap (2ΔL) without contacting each other (hereinafter, this arrangement is abbreviated as “standard arrangement”).

Then, the A block is fixed, and the B blocks 5 are moved forward or backward (indicated by a chain double-dashed line) while the two end faces 2s and 6s are in contact with each other. The width L ₀ (= L ₁ + L ₂ ) formed by one set of B blocks can be changed by + m or −n.

Although the A block is fixed and the B block is moved here, it goes without saying that the A block may be moved on the contrary. Further, as shown in the drawing of FIG. 5 and FIG. 6, one of the blocks A and B is arranged in a state of being rotated by a constant rotation angle θ with an axis O penetrating the center of the block in the vertical direction. By doing so, the A and B blocks can be arranged in a bent state. Of the B blocks on both sides of the A block, when the B block on the left side in the plan view is + θ (rotated left) and the B block on the right side is −θ (rotated right), a convex curved surface is formed (see FIG. 5). : Arrow d), conversely, when the left B block is -θ (right rotation) and the right B block is + θ (left rotation), a concave curved surface is formed (Fig. 6: arrow e).

Next, the inclined surfaces of the side end faces 2s, 3s, 6s, 7s of the A / B block of the above embodiment are formed to be flat surfaces, but as another embodiment, as shown in FIGS. As shown in the plan view of the main part, it may be curved. That is, both the end faces 11s and 12s of the front body 11 and the rear body 12 of the A block 10 are convex curved surfaces in the front-back direction (arrow b) (straight in the vertical direction), and the tangent s in the front-back direction thereof. Is formed so as to incline (x) toward the rear.

On the other hand, the front body 16 and the rear body 17 of the B block 15 have both end surfaces 16 s and 17 s that are convex curved surfaces in the front-rear direction (arrow b), and the tangential line s in the front-rear direction is rearward. It is formed so as to incline (y) toward the outside. With the above-described configuration, the combined arrangement is rotated in the front-rear direction and / or rotated by rubbing the curved surfaces of the both end faces 11s and 16s, like the A / B blocks 1 and 5 described above. To move (arrows f and g: see FIG. 10).

Although the curved surface of the above-described embodiment (FIGS. 9 and 10) is formed into a convex curved surface, it may be formed into a concave curved surface although not shown. [Retaining wall construction method using A / B blocks] Next, a construction method of a gradient curve retaining wall using the above A blocks 1, 10, B blocks 5, 15 will be described below with reference to the drawings. . FIG. 11 is a vertical sectional view showing a building state of this embodiment, and FIG. 12 is a front view showing a part of the building retaining wall.

The formation of the excavation slope 21 of the bank, the laying of the back crushed stone 27, and the formation of the foundation 25 are the same as those of the conventional method described above, and therefore the same reference numerals are given and the description thereof will be omitted. (A) First, as a first step, as a set of the A block 1 and the B block 5 on the constructed foundation 25, as described above, both side end surfaces 2s and 6s of the front bodies 2 and 6 thereof. The blocks are slid in the front-rear direction while being in contact with each other, or one of the blocks is rotationally moved around the central axis O to be positioned and placed. (B) In the second step, one set of A / B blocks placed by the above method is placed in a horizontal row in a desired number of sets to form the first stage. (C) Then, as a third step, the back-filled rubble 27 is filled between the rear bodies 3 and 7 of the blocks 1 and 5 which are positioned and arranged and the soil surface 21. (D) In the fourth step, the shell concrete 28 is filled between the front bodies 2 and 6 and the rear bodies 3 and 7 of the blocks 1 and 5, respectively. (E) Next, the blocks are placed on the blocks 1 and 5 of the first stage by the same steps as the above-mentioned first step and second step so that the joints of the blocks are not vertically aligned. And go and compose the second stage. (F) By repeating the above third to fifth steps, each block is stacked in multiple stages to build a retaining wall with a predetermined height.

Further, in the first step of the above-mentioned embodiment, a construction method is adopted in which the A block 1 and the B block 5 are set as one set and are alternately placed side by side in the lateral direction. As shown in FIG. 12, first, a predetermined number of only the A block 1 (or only the B block 5) are arranged side by side with an interval w at which the B block 5 (or the A block 1) can be placed. After that, the B block 5 (or A block 1) may be inserted into each of the gaps w, w, ... to form a horizontal single-row step (this construction method is abbreviated as “interval mounting method”). Yes.).

The construction method of the above procedure can be adopted for the first time by using the combination stacking block of the present invention, and by this, a remarkable effect which has never been obtained can be obtained. That is, as shown in the plan view of FIG. 13, generally, the method of laying blocks of slope curve retaining walls side by side is such that each side of the unit construction section 30 (about 20 m) is stretched 18, 18 respectively. Is planted, and a water thread 19 is stretched between the tensions 18. Gradient curve retaining wall is constructed by setting a certain receding distance (arrow h) from the water thread 19 so that the desired bending ratio is obtained, and placing each stacking block on the basis of this. Was there.

In this case, since the conventional construction method is to sequentially line up adjacent to each other from one side, if it does not match the setback distance (arrow h) set at the last position, go back to the beginning and correct it. It was necessary, and it was a laborious task that required a lot of effort and skill. However, in the combination stacking blocks 1 and 5 of the present invention, as described above, only one of the blocks 1 (or 5) can be placed on the basis of the water thread 19 first, and the block 5 (or 5) placed between them can be placed. In 1), since it moves positively and backwardly, there is no need to worry about aligning the so-called faces, and correction can be easily performed. Therefore, general workers can be efficiently constructed without relying on specialized workers.

Furthermore, conventionally, one set of work personnel (“one party”) composed of crane workers, special technicians, general workers, assistants, etc., sequentially carries out construction for each unit construction section 30. However, by adopting the spacing placement method of the present application, two sets of parties are configured, and one unit enforcement section 30 is placed on the first party for only one block 1 (or 5). After the placement, move to the next unit enforcement section 31 and perform the same placement. During this time, the second party will perform the work efficiently by following the work of the first party and sequentially placing the other block 5 (or 1) in the formed gap. be able to. This can shorten the construction period and eventually reduce the construction cost.

In the fourth step, the in-wall concrete 28 may be injected at the same time after stacking in a plurality of stages. Further, in the above description, the description has been made using the A / B blocks 1 and 5, but the same applies to the case where the A / B blocks 10 and 15 are used.

[0035]

【effect】

 With the above configuration, the present invention has the effects listed below. (1) By rubbing one of the A and B blocks with their slanted end faces, moving them in the front-back direction as appropriate, or by slightly rotating them, the total width of the A and B blocks can be calculated. It can be changed appropriately, and it is possible to appropriately cope with the construction of the slope curve retaining wall of the outer curve of various curvatures or the inner curve. (2) Since the blocks, especially the front body, are in contact with each other and rub against each other, it is possible to secure more reliable strength than the conventional construction method in which the joint space is changed or the construction method using the interstitial concrete. You can do it, and it will not spoil your aesthetics. (3) In the horizontal single-row arrangement, if only the A block is first arranged at a predetermined interval and then the B block is arranged in the gap, the conventional method is used. As described above, the method of arranging from one side to the other side allows construction to be completed in a short time, which in turn can reduce the construction cost. (4) Since the front surface of the front body of the A block has the same convex portion as the front width of the B block, even if the A and B blocks are moved in the front-rear direction, the appearance is not spoiled. In addition, since the combination block of the present invention is positively displaced in the front-rear direction, it is required to have the strictness of construction that the front faces of the blocks can be accurately aligned on the same plane as in the conventional example. Since it is not performed, there is an advantage that general workers who are not specially skilled workers such as masonry can easily perform the construction. (5) Conventionally, the extension of construction was limited by the block length unit, but since the width dimension can be adjusted appropriately by combining the A and B blocks, there is an effect that it can respond appropriately. .

[Brief description of drawings]

FIG. 1 is an overall perspective view showing one of a set of combination stacking blocks of the present embodiment.

FIG. 2 is an overall perspective view showing the other one of the set of combination stacking blocks of this embodiment.

FIG. 3 is a plan view showing a combined state of one combination stacking block of the present embodiment.

FIG. 4 is a plan view showing an example of a combination arrangement of a combination stacking block of this embodiment.

FIG. 5 is a plan view showing an example of a combination arrangement of a set of combination stacking blocks according to the present embodiment.

FIG. 6 is a plan view showing an example of a combination arrangement of a set of combination loading blocks according to the present embodiment.

7A and 7B are a plan view and a side view showing one of a pair of combination stacking blocks of another embodiment.

8A and 8B are a plan view and a side view showing the other of the set of combined piling blocks according to another embodiment.

FIG. 9 is a plan view showing an essential part of a set of combinational stacking blocks of another embodiment.

FIG. 10 is a main part plan view showing a combined state of a set of combination stacking blocks of another embodiment.

FIG. 11 is a vertical cross-sectional view showing a built state of a retaining wall using the blocks A and B of the present embodiment.

FIG. 12 is a front view showing a construction state of a retaining wall using the blocks A and B of the present embodiment.

FIG. 13 is a plan view showing an outline of construction of a retaining wall using the blocks A and B of the present embodiment.

FIG. 14 is a front view showing a partially constructed cross section of a conventional construction retaining wall.

FIG. 15 is a vertical cross-sectional view showing a construction state of a retaining wall using a block of a conventional example.

FIG. 16 is a front view (A), a side view (B), and a plan view (C) showing an example of a conventional block for flat stacking.

FIG. 17 is a front view showing a conventional construction example corresponding to a slope curve retaining wall.

FIG. 18 is a front view showing a conventional construction example corresponding to a slope curve retaining wall.

[Explanation of symbols]

1, 10 ... A block 5,15
..B blocks 2, 6, 11, 16 ... Front body 2s, 6s, 11s, 16s ... Both end surfaces (of front body) 3, 7, 12, 17 ... Rear body 3s, 7s, 12s , 17s ... Both end surfaces (of the rear body) 4, 8, 4a, 8a ,.

Claims (5)

[Scope of utility model registration request] 1. A rectangular plate-shaped front body (2, 6) and rear body (3, 7) having a predetermined thickness, and a connection for integrally connecting the front body and the rear body with a predetermined space. Body (4,
8) in a stacking block consisting of the front body (2) and the rear body (3) on both side end faces (2s, 3).
s) has a constant inclination angle with respect to the front-back direction and is formed on a surface inclined inward toward the rear (A block), and both end surfaces of the front body (6) and the rear body (7) ( 6s, 7
and a block (B block) having a constant inclination angle with respect to the front-rear direction and formed on a surface inclined outward toward the rear, the combination stacking block. 2. A rectangular plate-shaped front body (2, 6) and rear body (3, 7) having a predetermined thickness, and a connection for integrally connecting the front body and the rear body with a predetermined space. Body (4,
8) in a stacking block consisting of the front body (2) and the rear body (3) on both side end faces (2s, 3).
a block (A block) in which s) is formed in a curved shape along the front-rear direction, and a tangential line (s) in the front-rear direction inclines (x) toward the rear, and a front body (6) and Both end surfaces (6s, 7) of the rear body (7)
and a block (B block) in which s) is formed in a curved surface along the front-rear direction, and a tangent line (s) in the front-rear direction is inclined outward (y) toward the rear. Combination stacking block. 3. The combination stacking block according to claim 2, wherein the curved surfaces formed on both end surfaces (2s, 3s) of the front body (2) and the rear body (3) are convex curved surfaces. 4. The combination stacking block according to claim 2, wherein the curved surfaces formed on both end surfaces (2s, 3s) of the front body (2) and the rear body (3) are concave curved surfaces. 5. A block having a smaller width (B block, B block) is formed on the front surface of the block having a larger width (A block or B block) by forming the blocks having different front surface width dimensions.
Or, the convex portion (2a) having substantially the same length as the width of the A block) is formed, and the thickness of the front body including the convex portion (2a) and the thickness of the front body of the smaller block are 3. The combination stacking block according to claim 1, wherein the blocks are set to be substantially the same.