JP3121743U - Block support material - Google Patents

Abstract

[PROBLEMS] To provide a small hole on the back of a non-self-supporting concrete masonry block to drastically improve the construction method of a conventional concrete masonry block that had been forced to use a buttocks stone. Insert one end, adjust the height of the other end of the bar on the rear chestnut (support structure), keep the block posture, and do not use any buttstone between the block and the backfill concrete A block support material useful for the new construction method is provided.
A cross-sectional structure in which the strength of a block support material is supported by a backfill concrete width and a force of 50 kg or more is applied to the center of the block support material so that it is not deformed by 2 mm or more, and the length M is defined as the depth a of the block hole. It was tuned as the sum of the width b of the backfill concrete and the support length c.
[Selection] Figure 1

Description

  Insert a rod-like material into the hole opened on the back of the stacking block, support the other end of the rod-like material on the support structure via the back-filled concrete layer, and strike the back-filled concrete while maintaining the block posture. The present invention relates to a block support material used in a block stacking method.

  In road construction and river improvement work, concrete building blocks are piled up on the mountain side to form a retaining wall. There are two types of stacking blocks: self-supporting type and non-self-supporting type, and in the case of non-self-supporting type, they cannot stand on their own when they are stacked on the foundation. You must correct and support your posture.

  FIG. 6 is a side sectional view showing an example of a conventional method for constructing a non-self-supporting concrete building block. After cutting the slope 1 and making the foundation 2, the chestnuts 3 are arranged on the slope 1 and the first layer of backfilled concrete C1 is placed up to the height L1. After placing and positioning the block B1, the second layer of backfill concrete C2 is struck. In the same procedure, the second-stage concrete block B2 is positioned, and backfilled concrete C3 is hit. The same procedure is repeated to stack the third and fourth concrete blocks B3, B4,.

  The problem here is that in order to load the concrete building blocks Bi (i = 1, 2, 3,...), Back-filled concrete Cj (j = 1, 2, 3,. It is necessary to be surely cured. Since it takes time to harden the concrete, a waiting time is required.

  Another problem is that the height of the backfilled concrete Cj is not necessarily constant. Therefore, in order to maintain the correct posture of the concrete stacking block Bi, the back portion of the concrete stacking block Bi with respect to the backfilling concrete Cj. For example, the wedge-shaped buttocks 4 must be filled. It is not preferable to fill the buttocks 4, but it is unavoidable. The fine adjustment by filling the bottom stone 4 requires that the back-filled concrete Cj is completely hardened, and is unstable and may shift when the next back-filled concrete Cj is placed. is there.

  In order to stop the filling of the buttstone 4, the height of the top surface of the concrete Cj must be determined accurately, but it is actually impossible to finish the heights L1, L2, L3, and L4 of the ready-mixed concrete with 1 mm accuracy. is there. As already indicated, the use of the butt stone 4 requires that the backfilled concrete Cj is properly hardened. For this reason, the surface of the portion indicated by the heights L1, L2, L3, and L4 Is formed as a separation layer, which is a weak point of the structure. The use of ass is still prohibited. However, today there is no suitable method to improve this.

  The above-mentioned conventional example is the most common concrete building block construction method, and is a simple and natural construction method, and there is no conventional construction method that improves this. If it dares to show, there is patent 3502081 gazette (a revetment structure and a revetment construction method, a revetment structure and a revetment construction method).

  In the structure of Japanese Patent No. 3502081, the surface layer material is made of synthetic resin, and the anchor material 5 is provided on the back surface of the concrete. The anchor material 5 is fixed in the concrete by being inserted into the frame simultaneously with the production of the concrete. The purpose of the reinforcement is to firmly fix the concrete block on the concrete block, and after the concrete is hardened, the construction structure is integrated by maintaining a considerable amount of pulling resistance between the concrete block and the reinforcement. It is unclear how the anchors fixed to the block will be positioned before placing the backfill concrete. In addition, in a general small-sized stacking block, a stacking block in which a reinforcing bar is inserted is difficult to transport and the problem is how to handle the load.

  In JP 2002-81039 A (construction stone for civil engineering structures), in order to facilitate stacking construction of natural stone, a rod-shaped member is integrated with the natural stone so as to increase the engaging force against the back-filled crushed stone. It is a thing. However, these natural stones are completely different from concrete blocks, so they cannot be used as a reference for general building blocks. Moreover, no consideration is given to the effectiveness of the rod-shaped member when using backfill concrete.

  Therefore, in view of these conventional techniques, it is possible to pile up the next-stage concrete building block without waiting for the full-hardening of the back-filled concrete, and the previous-stage back-filled concrete. Proposed a concrete concrete building block construction method (Japanese Patent Application No. 2004-269823) that can adjust the block posture correctly without placing a butt.

  This special concrete building block construction method has a bottomed hole that can be inserted into one end of a short bar on the back of a non-self-supporting concrete building block, and is a straight short bar that is adjusted to the required length. One end of the hole is inserted into the hole, the other end is supported on the support structure behind the back surface, and the rod is slightly bent by bending near the outlet based on a manual operation in which the bar is added between the two. Adjust the inclination angle of each stacking block based on the adjustment or fine adjustment by the up and down operation of the other end of the bar, and stack the stacking blocks sequentially in the horizontal direction while maintaining the adjusted block posture, or multiple stages After the block stacking, the back-filled concrete including the bar is cast and the multi-stage block stacking is sequentially performed.

  The concrete building blocks are sequentially stacked horizontally and vertically. In the method of the present invention, one end of a linear short bar adjusted to an appropriate length is inserted into a hole provided in the back of the block, and the other end is supported on a support structure such as chestnuts behind the back, By adjusting the inclination angle of the stacked blocks, the stacked blocks are stacked sequentially in the horizontal direction while maintaining the adjusted block posture. At this time, the butt stone shown in the conventional example is not used on the back of each block. That is, each block is fixed between support structures behind the block via a bar. Then, after one or a plurality of blocks are stacked, back-filled concrete including the bar is placed. Since there are few restrictions at the time of placing the backfill concrete and it is not necessary to completely cure, the work can be performed quickly and each block can be securely fixed.

However, in this construction method, since the rod-shaped material should be prepared appropriately, it was bent due to insufficient strength, and the working process was deteriorated because the length did not match. There was also an error in the width of backfilled concrete, and it was difficult to prepare rebars each time.
Japanese Patent No. 3502081 publication, page 1, Fig. 5 Japanese Patent Laid-Open No. 2002-81039, page 1, FIG.

  In the present invention, a rod-shaped material is inserted into the hole opened on the back of the stacking block, and the other end of the rod-shaped material is supported on the support structure through the backfill concrete layer, and the block posture is maintained and the back is maintained. In the rod-shaped material used in the block stacking method in which embedded concrete is cast, not only simply supporting the block, but also the ease of use, high quality support, and improvement of the quality of the finished concrete block retaining wall It aims at providing the block support material which can do.

  In order to solve the above problems, the concrete block support material of the present invention inserts a rod-shaped material into a hole opened on the back surface of the stacking block, and the other end of the rod-shaped material is back-filled on the support structure via the concrete layer. Is a block support material used in the block stacking method in which backfilling concrete is placed after maintaining the block posture, and is supported at both ends by the width of the backfilling concrete and has a weight of 50 kg or more in the center. It has a cross-sectional structure in which the amount of bending at the center when the weight is added is 2 mm or less, the hole depth a opened on the back of the stacking block, the width b of the backfill concrete, and the support structure A length of the sum M (M = a + b + c) with the support dimension c is determined, and the length is adjusted to a plurality of sizing dimensions as the most appropriate size for each type of block and its stacking method.

  In the block support material of the present invention, the length M is the sum of the hole depth a opened in the back of the block, the width b of the backfill concrete, and the appropriate support length c on the support structure. It is the optimum length for one design at one site. Unlike cutting the reinforcing bars each time to use as a support material, it eliminates the need to cut the reinforcing bars and can be used effectively to stack each block.

  Moreover, even if the strength is supported at both ends by the width of the back-filled concrete and a force of 50 kg corresponding to the average weight of a person is applied to the center, the center does not bend more than 2 mm, so the block support There will be no misalignment even if it is accidentally stepped on by a person's foot later. In addition, there is no risk of misalignment even when raw concrete is poured and touched when placing backfilled concrete.

  The rod-shaped material can be constituted by a hollow pipe material having a hollow structure.

  If the concrete block support material using this hollow pipe is used, the concrete block and the support structure are connected by the hollow pipe. In addition to the above-mentioned action, the back-filled concrete is accumulated in the support structure after being placed. Can be discharged to the concrete block side.

  As described above, since the present invention is a block support material as described in the claims for utility model registration, a rod-shaped material is inserted into the hole opened on the back of the stacking block, and the other end of the rod-shaped material is backed up. When supporting on a support structure through a concrete layer, block support material adjusted to appropriate strength and appropriate dimensions can be used, so it is easy to use and can be used for smooth construction. Block stacking can be performed. Unlike cutting off reinforcing bars each time and preparing them on the spot, it can be provided as a block support material suitable for the construction method as an off-the-shelf product, so that the prescribed construction method can be applied smoothly as prescribed.

  Further, if the rod-shaped material has a hollow structure, the support structure and the concrete block are communicated by a hollow pipe, rainwater accumulated in the support structure can be discharged to the block side, and the retaining wall quality can be improved.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best mode for carrying out the invention will be described with reference to the accompanying drawings. 1A and 1B are explanatory views of a block support member according to an embodiment of the present invention. FIG. 1A is a side view, and FIG. 1B is an enlarged sectional view thereof. 2A and 2B are explanatory views showing another embodiment, in which FIG. 2A is a side view and FIG. 2B is an enlarged sectional view thereof. The thing of FIG. 1 differs in the point which is a rod, FIG. 2 is a hollow pipe material.

  In FIG. 1, the block support material 5 of the present invention is supported at both ends by the width b of backfill concrete, and when the weight of 50 kg or more (F) is added to the center thereof, the bending amount α at the center becomes 2 mm or less. Sum M (having a cross-sectional structure (drum material having a diameter of D1 mm), a hole depth a opened on the back of the stacking block, a width b of the backfill concrete, and a support dimension c on the support structure M = a + b + c), and is adjusted to a plurality of sizing dimensions as the most appropriate size for each type of block and its stacking method.

  As shown in FIG. 2, the rod-shaped material may be a block support material 6 having a hollow structure having an outer diameter D2 and an inner diameter D3. In the case of a hollow structure, there is a special effect that the support structure and the block communicate with each other, and rainwater of the support structure can be drained to the block side.

  Hereinafter, application examples of the block support materials 5 and 6 of the present invention to actual construction methods will be described.

  As shown in FIG. 4, the concrete building block 7 has a structure in which one small hole 8 having a diameter d and a depth a is provided at the center of the back surface 7b. The concrete building block 7 can be accommodated by carrying in a hole drilled in advance at the time of molding in the factory, or by drilling with a concrete drill or the like when it is carried into the construction site. Since drilling requires time and effort, it is preferable to perform molding. The diameter d is set such that the block support member 5 can be easily inserted and removed.

  When the other end is moved left and right with one end 5a of the block support member 5 inserted, the depth a can be changed in the angle of the block front surface 7a by the lever principle, and the block 7 is fixed in a state where the block 7 is fixed. The support material 5 has a dimension that can be bent in the vicinity of the back surface 7b.

  The block support material 5 is prepared completely separately from the concrete stack block 7. The concrete building block 7 is manufactured, for example, in a concrete factory. After carrying it in the field, the block support material 5 separately prepared as a product is combined and used in the state shown in FIG.

  The block support material 5 can be manufactured from an iron material or high-strength plastic. Generally, it is about 20 to 40 cm. These block support materials 5 are provided by mass production. About 3 types will be prepared with the change of width of backfill concrete. In any case, even if the center is pressed with a force of 50 kg in the manner shown in FIG. 1, the strength does not bend 2 mm or more. Therefore, even if you step on the center during construction and insert raw concrete, the blocks will not be greatly displaced.

  As shown in FIG. 3, the chestnut 3 is stacked along the slope 1 to the height L1. This height L1 is the height of the first layer of backfill concrete C1 shown in the conventional example. In this construction method, backfilled concrete 9-1 is used, but the time of placing is different from the conventional example. That is, the backfill concrete 9-1 may be cast before the concrete block 7-1 is stacked, or may be cast after that.

  The block support material 5 is inserted in the back surface 7b of the concrete pile block 7-1. Therefore, the height of the other end 5b of the block support member 5 is adjusted on the chestnut 3 to correct the posture on the foundation 2 of the concrete stack block 7 or the preceding concrete stack block 7 and fix the positioning.

  The height adjustment of the other end 5b of the block support material 5 on the chestnut 3 can be easily performed. The crushing stone on the chestnut 3 may be performed, and the size of the chestnut 3 may be adjusted. Further, the block support material 5 may be bent near the block back surface 7b. Although it has high strength, it can be bent on the principle of leverage.

  Subsequently, the next stage, for example, the second stage concrete stack block 7-2 can be stacked. At this time, the back-filled concrete 9-1 for the previous stage may be placed together with the back-filled concrete 9-2 for this time. In this way, the backfill concrete 9 can be placed in a plurality of stages, but in order to securely fix the previous stage, it is still better to cast one stage at a time. good.

 In this way, in this construction method, the bottom quarry stone 4 is not used, so that the next stage can be stacked with the backfilled concrete uncured. Since the building blocks are constructed in a continuous operation while the backfilled concrete is uncured, the adhesion with the backfilled concrete in the next stage is improved and a firm retaining wall can be built.

  Next, a preferred application example in the case where the stacking block is a porous concrete block 10 (10-1, 10-2) will be described with reference to FIG.

  First, the first stage chestnut 3 is stacked, and a porous concrete stacking block 10-1 is stacked. At this time, the angle of the concrete block 10-1 is adjusted using the block support material 6 on the chestnut 3. Next, after placing the concrete blocks in the horizontal direction, lightly strike the backfill concrete 9-1. Thereafter, the next chestnut 3 is stacked on the back, and the remaining back-filled concrete is appropriately hit using the punching mold 11 to stack the next concrete block 10-2. Regarding the method of stacking the chestnut 3, the punching mold 11 is interposed between the chestnut 3 and the backfill concrete 9, the back chestnut 3 is placed on the back side, the punching mold 11 is pulled out, and the chestnut 3 is stacked up. go. The adjustment of the gradient and the normal line can be easily determined by the block support member 6 protruding from the block 10. Since construction work can be continued continuously without waiting for the full curing of the backfill concrete 9, it is possible to eliminate the weak point of the structure by the cold joint and to greatly improve the work efficiency. Since the punching mold 11 is used, the raw concrete does not enter the chestnut 3 and water permeability can be secured.

  Because the slope 1 is piled with chestnut 3 and the concrete block 10 is used, and the block support material 6 having a hollow structure is used between the two, a retaining wall with exceptionally good drainage can be constructed.

  The present invention is not limited to the above-described embodiment, and can be changed in design without departing from the gist of the present invention, and can be implemented in various modes.

The block support material which concerns on one Embodiment of this invention is shown, (a) A figure shows a side view, (b) A figure shows sectional drawing. The block support material which concerns on other embodiment of this invention is shown, (a) figure shows a side view, (b) figure shows sectional drawing. It is a sectional side view which shows the example of application of this invention. It is sectional drawing of the concrete building block used by this invention. It is sectional explanatory drawing which shows the other example of application of this invention. It is a sectional side view which shows the construction example of the conventional concrete pile block.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slope 2 Foundation 3 Kuriishi 4 Buttokishi 5 and 6 Block support material 7 (7-1, 7-2, 7-3, 7-4) Concrete block 8 Hole 9 (9-1, 9-2, 9-3, 9-4) Backfilled concrete 10 (10-1, 10-2) Porous concrete block 11 Die form frame a Hole depth b Width of backfilled concrete c Length of support material M Total length of support material

Claims (2)

Insert a rod-like material into the hole opened on the back of the stacking block, support the other end of the rod-like material on the support structure through the back-filled concrete layer, and strike the back-filled concrete while maintaining the block posture. A block support material used in a block stacking method designed to be installed,
Having a cross-sectional structure in which the bending amount of the central part is 2 mm or less when both ends are supported by the width of the backfill concrete and a weight of 50 kg or more is added to the center thereof;
The length M of the hole depth a opened at the back of the stacking block, the width b of the backfill concrete, and the support dimension c on the support structure is determined. A block support material characterized by adjusting to a plurality of fixed dimensions as the most appropriate size for each construction method. The block support material according to claim 1, wherein the rod-shaped material has a hollow structure.

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