JPH0647806B2 - Protective structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a protective structure such as a shed or a keeper installed to protect roads or railroad tracks from falling rocks and the like.

[Prior Art] In general, this type of structure is constructed by supporting a roof with a support, and it is known that steel and concrete made of PC or RC are used. For example, as for concrete shed, as disclosed in Japanese Utility Model Publication No. 1-4895, Japanese Patent Publication No. 1-2722, etc., horizontal fastening of main girders, which are a plurality of concrete wall bodies, in the longitudinal direction of a road or track is performed. PC for
A roof is formed by tightly connecting the steel members together, and both sides of the roof in the road or track width direction are rigidly connected to columns or walls. The main girder structure is known to have a T-shaped cross section or an arched cross-section, and the supporting structure for the main girder is one in which both sides of the main girder are supported by a parent pillar and child pillars, and a retaining wall and Various things such as pillars or retaining walls and those supported by retaining walls are known. A concrete keeper of this type is disclosed in Japanese Utility Model Laid-Open No. 62-196220, Japanese Patent Publication No. 1-24400.
As disclosed in Japanese Patent Publication No. 3 etc., a plurality of concrete wall bodies are tightly bonded together by a horizontal tightening PC steel material oriented in the longitudinal direction of the road or track to form a roof, and the roof is formed in the road or track width direction. It is configured to be installed diagonally on the mountain side.
Known roof support structures include those that fix the roof to the substructure and the pillar, and those that fix the roof to the substructure and the mountain wall.

In these various protective structures made of steel or concrete, a sand cushion material such as sand, crushed sand, or mountain soil is generally laid on the roof for the purpose of buffering the impact force caused by falling rocks or the like.

In the above-mentioned prior art, since the impact cushioning structure is formed by laying a sand cushion material having no impact dispersing effect on the roof of the protective structure, in order to obtain a sufficient cushioning effect against a large rock fall. The thickness of the sand cushion material layer is required to be about 90 to 120 cm, and there is a problem that the dead load increases due to the buffer structure and it is difficult to put it into practical use.

In order to solve such a problem, a foamed body whose outer surface is covered with rubber is provided on the roof of the protective structure.
It has been proposed for the traffic road protection equipment in Japanese Utility Model Laid-Open No. 60-154412.

[Problems to be Solved by the Invention] In the above traffic protection equipment of the related art, foams are arranged to form a block layer, and the foamed rubber can be protected from ultraviolet rays by the covered rubber, but individual foams can be protected. Since the entire outer surface of the foam is covered with rubber, the manufacturing cost of the foam is expected to increase, and when these foams are lined up according to the size of the roof, the foam together with the rubber is also adjusted in the adjustment part. Had to be cut and processed, which was inferior in workability.

Therefore, the present invention aims to provide a protective structure capable of reducing dead load and providing shock and cushioning effect of impact force, excellent in workability, and relatively inexpensive and improving durability of styrofoam. And

[Means for Solving the Problems] The protective structure according to claim 1 is a protection structure in which a roof covers at least a part of a road or railroad track along a mountain and is provided along the mountain side by a support body. In a structure, an enclosure block is erected on the road side peripheral edge of the roof, a sand cushion material layer made of sand or the like is provided on the roof between the mountain and the enclosure block, and a plurality of sand cushion material layers are provided on the sand cushion material layer. The block layer made of the unit polystyrene foam block is provided, and the protective material layer made of concrete is provided to cover the foam polystyrene block layer.

The protective structure according to claim 2 is a protective structure in which a roof covering at least a part of a road or railroad track along a mountain and provided along the mountain side is supported by a support, wherein the road of the roof. An enclosure block is erected on the side edge, a sand cushion material layer made of sand or the like is provided on the roof between the mountain and the enclosure block, and a block layer made of a plurality of expanded polystyrene blocks on the sand cushion material layer. And a protective material layer made of a sand cushion material that covers the styrofoam block layer.

[Operation] The protective structure of the present invention is a combination of a cushioning sand cushion material layer and a styrofoam block layer that is lightweight and has an impact buffering and dispersing effect to reduce dead load and to reduce impact force due to falling rocks or the like. The styrofoam block is protected from ultraviolet rays by the protective material layer which is made of concrete or a sand cushion material and which has enhanced cushioning and dispersion effects and which covers the styrofoam block layer. Further, when the protective material layer is concrete, the unit foam polystyrene block is fixed, and when the protective material layer is a sand cushion material, the cushioning effect of the protective material layer further enhances the cushioning effect.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a first embodiment of the present invention, which shows a concrete shed provided with a shock absorbing structure on a roof, and a plurality of main girders 1 serve as roads. The roof 3 along the mountain Y is tightly bound together by the PC steel material 2 for lateral fastening facing the road M or the longitudinal direction of the track to form the roof 3 on the road side peripheral upper part of this roof 3 by the anchor member 5. Both sides of the roof 3 in the road M or track width direction are placed on the pillars 6 and the walls 7 which are supports and rigidly integrated by the vertical fastening steel material 8 to form a shed.

In the shock absorbing structure, a sand cushion material layer A is provided on the roof 3, a block layer B composed of a plurality of styrofoam blocks 10 is provided on the sand cushion material layer A, and a protective material layer C is provided on the styrofoam block layer B. The sand cushion material layer A is formed by laying a sand cushion material 9 such as sand, crushed sand, or mountain soil, and the styrofoam block layer B is formed by laying a number of planographic unit foam styrofoam blocks 10 side by side. There is. The unit foam polystyrene blocks 10 may be simply laid out side by side, but if necessary, a binding metal fitting (not shown) having a plurality of claw pieces is used to press-fit and lock the unit foam polystyrene blocks 10 adjacent to the claw pieces. Unit Styrofoam block
The ten may be tied together. The protective material layer C is made of concrete or the sand cushion material 9.

FIG. 3 shows a second embodiment of the present invention. In this example, a concrete keeper having a shock absorbing structure on the roof is shown, and the same parts as those in the first embodiment are designated by the same reference numerals. To explain in detail, the plurality of wall bodies 1A are integrally tightly bound together by the PC steel material 2 for lateral tightening facing the longitudinal direction of the road to form the roof 3A, and a block enclosing the roof 3A at the upper part of the road side peripheral edge. 4 is erected by an anchor member 5, the mountain side of the roof 3A is obliquely placed on the pillar 6A and the substructure 7A, and is fixedly integrated by the vertical fastening steel material 8 to form a keeper.

The shock absorbing structure is a sand cushion material layer A on the roof 3A.
Is provided on the sand cushion material layer A, and a styrofoam block layer B'formed by laying out the unit styrofoam blocks 10 in two steps is provided. On the styrofoam block layer B ', a protective material made of concrete or the sand cushion material 9 is provided. A layer C is provided.

FIG. 4 shows a third embodiment of the present invention. The same parts as those of the second embodiment are designated by the same reference numerals and the description of the same parts will be omitted. The impact force absorbing structure is the same as that of the second embodiment.

As described above, in each of the above-mentioned embodiments, the styrofoam block layers B and B'having characteristics such as compression resistance, water resistance and self-standing property, which are about 100 times lighter than earth and sand, and sand cushion material layers. Since the shock absorbing structure is constructed in combination with A, the dead load is much smaller than that of the prior art in which a sand cushion material is spread to a thickness of about 90 to 120 cm, and the unit foam polystyrene block 10 is The cost of the molding die can be reduced, it can be applied to various construction structures, and it does not require a large construction machine for transportation and movement, and can be laid out manually, which makes it highly practical. Further, the combination of the styrofoam block layers B and B'having the effect of buffering and dispersing the impact force and the sand cushion material layer A can buffer and disperse the impact force well and obtain a sufficient buffering effect against a large rock fall. it can. Further, since the protective material layer C is provided on the expanded polystyrene block layers B and B ', the expanded polystyrene block layers B and B'are protected from ultraviolet rays by the protective material layer C and can withstand long-term use. Further, since the styrofoam block layer A is composed of a plurality of styrofoam blocks 10, the dimensional alignment with the roof can be easily performed by cutting the styrofoam block alone. Further, when concrete is used for the protective material layer C, the unit polystyrene foam block 10 is fixed, and when sand cushion material 9 is used for the protective material layer C, protection made of the sand cushion material 9 is used. The cushioning effect of material layer C further enhances the cushioning effect.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, protective structures are applicable to various types,
Further, the thickness of the sand cushion material layer, the thickness of the styrofoam block layer, etc. may be appropriately selected. Further, the cushioning effect is enhanced by forming the protective material layer with a sand cushion material, and this protective material layer is mainly for protecting the Styrofoam block layer, and is composed of a multi-layer structure of the sand cushion material and concrete. You may do it.

[Effect of the invention] The protective structure according to claim 1 is a protective structure in which a roof that covers at least a part of a road or railroad track along a mountain and is provided along the mountain side is supported by a support, An enclosure block is erected on the roadside periphery of the roof, a sand cushion material layer made of sand or the like is provided on the roof between the mountain and the enclosure block, and a plurality of unit polystyrene foam blocks are provided on the sand cushion material layer. By providing a block layer consisting of, a protective material layer made of concrete covering the expanded polystyrene block layer is provided, it is possible to improve the durability of the expanded polystyrene at a relatively low cost by protecting the block layer from ultraviolet rays by the protective material layer, In addition, the protective polystyrene layer can fix the polystyrene foam block, and it is possible to reduce the dead load and to obtain the shock absorbing and dispersing effect. Therefore, it is possible to provide a protective structure having excellent workability.

The protective structure according to claim 2 is a protective structure in which a roof covering at least a part of a road or railroad track along a mountain and provided along the mountain side is supported by a support, wherein the road of the roof. An enclosure block is erected on the side edge, a sand cushion material layer made of sand or the like is provided on the roof between the mountain and the enclosure block, and a block layer made of a plurality of expanded polystyrene blocks on the sand cushion material layer. By providing a protective material layer made of a sand cushion material covering the styrofoam block layer, it is possible to reduce the dead load and to obtain a shock absorbing and dispersing effect, and excellent workability, The protective material layer protects the block layer from ultraviolet rays, and the durability of the styrofoam can be improved at a comparatively low cost. It is possible to provide a protective structure.

[Brief description of drawings]

FIGS. 1 and 2 show a first embodiment of the present invention.
The drawing is a partially cutaway perspective view, FIG. 2 is a sectional view, FIG. 3 is a sectional view showing a second embodiment of the present invention, and FIG. 4 is a sectional view showing a third embodiment of the present invention. 3,3A ... Roof, 6,6A ... Column (support) 7 ... Wall (support), 7A ... Substructure (support) 10 ... Styrofoam block 11 ... Anchor (support) A ... Sand cushion material layer B, B '... Styrofoam block layer C ... Protective material layer M ... Road Y ... Mountain

Front page continued (72) Inventor Miharu Matsuba 2527 Sasaki, Shibata, Niigata Prefecture 121 121, Nippon Samicon Co., Ltd. (72) Inventor Hiro, Osawa 2527, Sasaki, Shibata City, Niigata Prefecture 121, Nippon Samicon Co., Ltd. (72) ) Inventor Yoshiharu Goto 2527 Sasaki, Niigata Prefecture, Niigata Prefecture, 2527 Sagami 121, Japan Research Institute of Samicon Co., Ltd. (72) Inventor Akira Sato, 2527, Sasaki, Shibata City, Niigata Prefecture 121, Research Institute of Japan Samicon Co., Ltd. (72) Takayoshi Shimada Nagano 2326 Shinmura, Matsumoto city, prefecture Nagano Giken Co., Ltd. (72) Inventor Kanshiro Hoki, 4-8 Kikawahigashi, Yodogawa-ku, Osaka, Osaka

Claims (2)

[Claims] 1. A protective structure in which a roof which covers at least a part of a road or railroad track along a mountain and is provided along the mountain side is supported by a support, and which is enclosed at the roadside peripheral edge of the roof block. A sand cushion material layer made of sand or the like is provided on the roof between the mountain and the enclosing block, and a block layer made of a plurality of polystyrene foam blocks is provided on the sand cushion material layer. A protective structure comprising a protective material layer made of concrete covering the block layer. 2. A protection structure in which a roof which covers at least a part of a road or railroad track along a mountain and is provided along the mountain side is supported by a support body, and the block is surrounded by a roadside peripheral edge of the roof. A sand cushion material layer made of sand or the like is provided on the roof between the mountain and the enclosing block, and a block layer made of a plurality of polystyrene foam blocks is provided on the sand cushion material layer. A protective structure comprising a protective material layer made of a sand cushion material covering the block layer.