JP2000212919A - Block material for building cushioning structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a dimensional error of a structure by connecting vertically a plurality of block materials through a plurality of connecting jigs and forming recesses that can receive the base portions of the connecting jigs and thereby absorbing the thickness of the base portions. SOLUTION: A plurality of semi-circular recesses 1a to 1f are provided on the face of a block material on which a block material for the next stage is to be mounted, and semicircular recesses 2a to 2f are formed also on the underside of this block material. In this case, the recesses 1a to 1f on the top side of the block material, and the recesses 2a to 2f on the bottom side of the next block material jointly receive the base portions of the connecting jigs. The depth D of the recesses 1a to 1f and 2a to 2f is made half the thickness of the base portions, and adjacent block materials are connected strongly with pawls on the undersides of the connecting jigs by pressing from above. Simultaneously with that, the lower haves of the base portions of the connecting jigs are received into circular recesses, thereby preventing a dimensional error from occurring in a structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block material used for constructing a buffer structure (cushion layer) in rock fall protection equipment, for example.

[0002]

In mountainous areas, roads are often formed along cliffs, but the most important thing is how to protect cars and pedestrians from falling rocks. ,. Usually, in areas where the risk of serious accidents due to falling rocks is not so large, fences are installed on the shoulders on the mountain side, but this method cannot be used where large rocks are expected to fall. For this reason, concrete or steel roofs (rock fall protection equipment) are installed in the danger zone to cover the entire road, and in the unlikely event of a fall, rocks are received by the roof. .

[0003] In the above-mentioned rock fall protection equipment, a surface that receives rock fall, that is, a top surface thereof is generally provided with a cushion layer for cushioning impact.
This cushion layer is formed by laying sand, crushed soil, mountain soil, or the like at a height of about 1 to 2 m. However, in such a structure, the dead weight (dead load) applied to the column supporting the roof is significantly increased, so that there is no margin in the column strength.

In recent years, in order to solve such a problem, a technique has been developed in which the cushion layer of the rock fall protection equipment is constructed by stacking styrofoam blocks. This technology is based on SAM (Shock-Absorbe).
This method is called the “r-Method) method, and by using this method, the dead weight can be significantly reduced as compared with the conventional method, so that it is possible to provide a sufficient margin in the strength of the column.

[0005] However, it has been found that there is a need for improvement in this superior method as the construction by the SAM method is repeated. That is, when the SAM method is used, the cushion layer is made of a styrofoam block material,
Although it is configured by being stacked in a plurality of stages via a connecting jig, the surface height of the uppermost block material after the installation is completed is always several cm higher than the design. This error is large enough to point out inadequate construction management, is not negligible and should therefore be as close to zero as possible. By the way, in order to solve such problems, I tried using a block material with extremely high dimensional accuracy, but still, it was not possible to suppress the phenomenon that the surface height of the uppermost block material was several cm higher than designed. Was.

Accordingly, the problem to be solved by the present invention is that when a plurality of buffers are installed in a connected state to construct a buffer structure having a predetermined shape, no error occurs in the outer dimensions of the buffer structure. An object of the present invention is to provide a block material for building a buffer structure. In particular, when building up a buffer structure having a predetermined shape by stacking a plurality of members in a connected state in the vertical direction, a block member for building a buffer structure that does not cause an error in the height dimension of the buffer structure. It is to provide.

[0007]

Means for Solving the Problems In the course of earnestly pursuing research for solving the above problems, the present inventor has found that the error of the height dimension generated in the cushion layer, that is, the buffer structure, is:
The present inventors have found that it is not due to the dimensional accuracy of the block material, but to the influence of the connecting jig for connecting the block materials stacked in the vertical direction. That is, this connecting jig is composed of a disk-shaped base portion and a plurality of claws integrally erected on the base portion, and the entire claw bites into the block material so that the block materials are mutually connected. Be linked. However, the base portion of the connecting jig comes into contact with the block material with an extremely large area as compared with the claw, so that it does not naturally penetrate the block material. Therefore, when a plurality of block members are vertically connected via a plurality of connecting jigs, an error of about several centimeters finally occurs in the height dimension of the obtained buffer structure. In other words, the dimensional error of about several centimeters is an accumulation of the base part thickness of the connecting jig.

Therefore, the present inventor first considered thinning the base portion. However, it is difficult to make the thickness of the base portion less than the current level for reasons of strength, and it has been found that this proposal is not practical. In view of these points, the present inventor has come up with some idea on the side of the block material. Further, based on this idea, as a result of further research, a concave portion capable of accommodating the base portion of the connecting jig is formed in the block material at a position where the connecting jig is arranged, and thereby the base portion is formed. It was concluded that it would be sufficient to make the thickness of the steel sheet absorbable. In fact, according to this method, the outer dimension error of the buffer structure obtained by connecting a plurality of block members can be significantly reduced without lowering the strength of the connecting jig, especially the base portion thereof. In particular, when a plurality of block members are stacked in a vertically connected state to construct a buffer structure, an error does not occur in the height dimension of the buffer structure. By providing a concave portion in the block material, the position where the connecting jig is arranged can be clarified, and the workability can be further improved. In addition, the provision of the concave portion eliminates a gap between the block materials due to the presence of the connecting jig (particularly, the base portion), and the blocks are more closely adhered to each other. The contact area between the members becomes large. This increases the holding force (frictional resistance against slippage) acting between the block materials. Therefore, even when the installation location is a steep slope and a relatively large sliding force acts on the block material. But
The load on the nail of the connecting jig and the portion of the block material that receives the nail can be greatly reduced.

The present invention has been made on the basis of such knowledge, and the above-mentioned problem has been solved by connecting the base member and a plurality of claws erected on the base portion with a connecting jig to form a buffer. Block material used for constructing a structure for use, wherein a concave portion capable of accommodating at least a part of a base portion constituting the connecting jig is provided at a position where the connecting jig is arranged. The structure is solved by a block material for building a buffer structure.

In the block material for constructing a cushioning structure according to the present invention, the depth of the concave portion is set to 1/2 of the thickness of the base portion forming the connecting jig, or the thickness of the base portion may be reduced. Preferably, they are equal. This is to improve the positional stability (fitness) of the connecting jig between the block materials by matching the thickness of the base portion with the depth of the concave portion. Note that the depth of the concave portion is set to 1 of the thickness of the base portion.
/ 2 is the case where the concave portions are formed in both of the block members that are arranged to face each other with the connecting jig therebetween. On the other hand, the reason why the depth of the concave portions is equal to the thickness of the base portion is mainly that This is a case where a concave portion is formed only on one of the arranged block materials.

Further, the block material for constructing a cushioning structure according to the present invention is made of a foamed resin material, especially a styrofoam material in order to facilitate the work relating to the formation of the concave portion and the setting work of the connecting jig. Preferably,

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A buffer structure building block material, which will be described below as an embodiment of the present invention, is connected to each other by a connecting jig composed of a base portion and a plurality of claws erected on the base portion. It is connected and used for constructing a buffer structure (cushion layer of rock fall protection equipment), and at a position where the connecting jig is arranged, a part of a base portion constituting the connecting jig Characterized by being provided with a recess capable of accommodating therein. In particular, in the present embodiment, since the concave portions are formed in both of the block members connected to each other,
The depth of the concave portion is set to の of the thickness of the base portion forming the connecting jig. Here, the block material for building the buffer structure is made of a foamed resin material, that is, a foamed styrene resin.

Next, an embodiment of the present invention will be described in more detail with reference to FIGS. FIG. 1 is an external view of a buffer structure building block material of the present embodiment, FIG. 2 is an external view of a connecting jig used to connect the buffer structure building block materials, and FIG. It is an expanded sectional view of the connection part of the structure block materials for buffer structures. As can be seen from FIG. 1, the block material for constructing a buffer structure (hereinafter, referred to as the present block material) of the present embodiment is a rectangular parallelepiped, and can be easily processed and set with a connecting jig described later. It is composed of a polystyrene foam material. Incidentally, to give an example of the dimensions of the block material, the vertical dimension L is 2000 ± 1.
1 mm, width W is 1000 ± 7 mm, height H is 5
00 ± 5 mm.

A total of six semicircular recesses 1a to 1f are formed on the upper surface of the present block material, that is, on the surface on which the next-stage block material is to be placed upon installation on site. Also, in the present block material, a total of six semicircular concave portions 2a to 2f are formed on the lower surface at the same positions as the concave portions 1a to 1f on the upper surface, however, the concave portions 2d to 2f are not shown. ). The recesses 1a to 1f and the recesses 2a to 2f are both for accommodating a base portion of a connecting jig interposed between the block members. To be precise, the upper surface side recessed portions 1a to 1f of a certain block material and the lower surface side recessed portions 2a to 2f of the block material located next to the block material jointly accommodate the base portion of the connecting jig. However, there is an exception with respect to the block material located at the uppermost or lowermost portion of the buffer structure to be constructed. The former upper surface side recessed portions 1a to 1f and the latter lower surface side recessed portions 2a to 2f are independently connected and fixed. It is configured to accommodate the base portion of the tool.

Here, the structure of a connecting jig used for connecting the block materials to each other will be briefly described with reference to FIG. However, the connection jig shown in FIG. 2 is merely an example, and any type of connection jig can be used with this block material as long as the basic structure is the same. The connecting jig used for connecting the block members is made of a synthetic resin, and as can be seen from FIG. 2, a base portion 11 and a plurality of claws 12 which are integrally erected on the base portion 11. Consists of Of these, the base 11 is
In order to secure the necessary minimum strength, it has a thickness of several mm to about 1 cm. Here, as the connecting jig, the one in which the claws 12 are erected on both the upper and lower surfaces of the base portion 11 is shown, but there is also a case where the claws 12 are present only on one surface of the base portion 11. This connecting jig is used when connecting the block materials having the above-described exceptional structure, that is, the block materials located at the uppermost portion or the lowermost portion of the buffer structure to be constructed.

The recesses 1a to 1f and the recesses 2a to 2f of the block material are jointly formed by the base 11 of the connecting jig.
In the present embodiment, the depth D of each of the recesses 1a to 1f and the recesses 2a to 2f is set to の of the thickness T of the base portion 11 constituting the connecting jig (however, As described above, the depth of the concave portion on one surface side of the block material having the above-described exceptional structure is equal to the thickness T of the base portion 11). Specifically, in the present embodiment, the thickness T of the base 11 in the connecting jig is 6 m.
m, the concave portions 1a to 1f and the concave portions 2a to 2f
Are 3 mm in both cases. By the way, the recess 1a
-1f and the radii R of the recesses 2a-2f, since the radius R 'of the base 11 in the connecting jig is 50 mm,
Both are set to 60 mm.

FIG. 3 shows a state in which the block materials are connected to each other by using the connecting jig.
The block material is indicated by B, and the connecting jig is indicated by F). This state is obtained as follows. First, the block materials B are placed adjacent to each other. Then, the connecting jig F is placed in the circular recess 13 formed by this, and is pressed from above by a certain force or more. Then, the claws 12 on the lower surface side of the connection jig F penetrate deeply into the block material B, and as a result, adjacent block materials B are firmly connected to each other. At the same time, the lower half of the base portion 11 of the connecting jig F is accommodated in the circular recess 13.

Thereafter, the next block B is installed. This is because the block material B of the next stage is connected to the block material B already connected so that the circular concave portion 14 formed by abutting the block materials B of the next stage overlaps the connecting jig F. And press it with a certain or more force. By doing so, the claws 12 on the upper surface side of the connection jig F penetrate deeply into the next block material B, and the block materials B are firmly connected not only in the horizontal direction but also in the vertical direction. At the same time, the upper half of the base portion 11 of the connection jig F is accommodated in the circular concave portion 14, and as a result, the final connection state between the block materials B shown in FIG. 3 is obtained.

In this embodiment, the block material B
In the state where the semicircular concave portions are provided individually and the block materials B are connected to each other, circular concave portions 13 and 14 capable of accommodating the base portion 11 of the connecting jig F are formed. In other words, the concave portions 13 and 14 are configured to absorb the thickness of the base portion 11. Therefore, when the plurality of block members B are stacked in a vertically connected state via the connecting jig F to construct the above-described buffer structure, the height of the buffer structure is reduced. Has no error. Also, at the time of connection, since circular concave portions 13 and 14 are formed, the connection jig F
The position for disposing is clarified, and the workability can be further improved. In addition, by providing the recesses 13 and 14, there is no gap between the block members B due to the presence of the connecting jig F, particularly the base portion 11, and the block members B adhere more closely to each other. , 14, the contact area between the block materials B becomes larger. This increases the holding force (frictional resistance against slippage) acting between the block materials B. Therefore, even if the installation location is a steep slope, a relatively large sliding force acts on the block material B. Even if the claw 12 of the connecting jig F
In addition, the burden on the portion of the block material B that receives the claw 12 can be greatly reduced.

The position and the number of the concave portions formed in the block material are not limited to those of the present embodiment. For example, the concave portion may be formed on a surface other than the upper and lower surfaces of the block material, that is, on the side surface, or may be formed on the center side instead of the peripheral portion. In particular, when the concave portion is formed on the center side, the concave portion is formed not in a semicircular shape but in a circular shape corresponding to the base portion of the connecting jig.

FIG. 4 shows a block structure according to another embodiment of the present invention, that is, a block member for constructing a buffer structure having recesses 21a to 21f provided only on the upper surface (or lower surface). In the block material shown in the figure, the depths of the concave portions 21a to 21f are set to be equal to the thickness of the base portion of the connecting jig. This is because, as long as the block material having the same structure is used, there is no concave portion on the lower surface of the block material located above it.

[0022]

According to the present invention, when a plurality of buffer structures for building a buffer structure are installed in a connected state and a buffer structure having a predetermined shape is constructed, the external dimensions of the buffer structure are reduced. No error occurs. In particular, when a plurality of buffer structure building blocks are stacked in a vertically connected state to construct a buffer structure having a predetermined shape, no error occurs in the height dimension of the buffer structure. .

[Brief description of the drawings]

FIG. 1 is an external view of a block material for building a buffer structure according to the present embodiment.

FIG. 2 is an external view of a connecting jig used for connecting the block members for building a buffer structure according to the present embodiment.

FIG. 3 is an enlarged cross-sectional view of a connection portion between block materials for building a buffer structure according to the present embodiment.

FIG. 4 is an external view of a block material for building a buffer structure according to another embodiment of the present invention.

[Explanation of symbols]

B Block material (block material for constructing buffer structure) F Connecting jig 1a-1f Semicircular concave portion 2a-2f Semicircular concave portion 11 Base portion of connecting jig 12 Claw of connecting jig 13 Circular concave portion 14 Circular Recess

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shinsuke Kawashima 3-22-1, Higashiyama, Meguro-ku, Tokyo Taiyo Kogyo Co., Ltd. Tokyo Branch (72) Inventor Makoto Tamiya 4-8-4 Kigawahigashi, Yodogawa-ku, Osaka-shi Taiyo Foam Co., Ltd. (72) Inventor Hiroshi Oguro In-house F-term (reference) 2D001 PA06 PB04 PC03 PD01 PD12 3J066 AA23 BA04 BB01 BC01 BD05 BF01

Claims (3)

[Claims] 1. A connection jig comprising a base portion and a plurality of claws erected on the base portion, the connection portion being connected to each other,
A block material used for constructing a buffer structure, wherein a concave portion capable of accommodating at least a part of a base portion constituting the connecting jig is provided at a position where the connecting jig is arranged. A block material for constructing a buffer structure, characterized in that: 2. The cushioning device according to claim 1, wherein the depth of the concave portion is equal to half of the thickness of the base portion forming the connecting jig, or is equal to the thickness of the base portion. Block material for building structures. 3. The block material for constructing a buffer structure according to claim 1, wherein the block material is made of a foamed resin material.