JP3300916B2 - Lightweight block body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight block body which can be used as a substitute for embankment material in various types of civil engineering work, as a block body buried in a temporary road, or as a cushioning material for a shock absorbing facility such as a rock shed. .

[0002]

2. Description of the Related Art Lightweight blocks obtained by foaming resins into various shapes are utilized in various fields by utilizing their properties such as light weight, compression resistance and water resistance. The lightweight block body used for general civil engineering has a unit volume weight of 15 kgf /
m ^{3 to} 25 kgf / m ³ are used.

[0003]

For example, a panel-shaped lightweight block body is used as a cushioning material by stacking a plurality of blocks on the top end of a rock shed (rock fall protection cover). FIG.
As shown in (1), in the light-weight block body a, only the small area hit by the object b such as a falling rock bears the buffer function, and the other parts not hit by the object b do not bear the buffer function. Therefore, it is pointed out that the shock absorbing performance is low. Therefore, in order to cope with a huge impact energy such as the object b, the number of stacked lightweight block bodies a is increased,
A method of increasing the thickness of a single lightweight block body a is adopted. However, the thicker the layer thickness, the larger the storage space required, and the cushion because the lightweight block body a is an expensive petroleum product. There is a disadvantage that the cost is high. In addition, the lightweight block body a is destroyed with little expectation of a restoring force against impact energy acting on a narrow range. Therefore, there is also a problem that the buffer performance cannot be maintained unless a new one is replaced each time a rock falls.

[0004] The present invention has been made in view of the above points, and an object of the present invention is to provide a lightweight block body having a high cushioning performance. Still another object of the present invention is to provide a lightweight block body which is hard to break and can greatly improve the restoring force characteristics.

[0005]

That is, the present invention according to claim 1 is a light-weight shock absorbing block made of a shock-absorbing material, wherein a dispersion material formed in a mesh shape in a base material of the block is used. While being embedded and bonded in multiple stages, a separate dispersing material is used between the peripheral portions of the mesh-like dispersing material positioned in multiple stages to disperse the external force acting on a part of the block as a whole. A light-weight block body which is connected and buried with continuity with each other so as to transmit the light. The invention according to claim 2 is a lightweight block body for absorbing shock, comprising a single block made of a shock absorbing material and a dispersing material, and dispersing an external force acting on a part of the block throughout the block. All blocks to communicate
A lightweight block body, wherein an outer peripheral surface of the body is covered with a dispersing material in a mesh shape.

[0006]

Embodiment 1 Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. <A> Structure of lightweight block body FIG. 1 shows a perspective view of the lightweight block body 1 with a part thereof omitted. The lightweight block body 1 is configured by embedding a mesh 3 in a base material 2. The base material 2 is made of a known material having a shock absorbing property made of styrene foam or rubber, and its block shape may be any shape such as a panel shape, a columnar shape, and a spherical shape. The mesh 3 covers the entire length of the base material 2
And a force acting on a part of the mesh 3
Can be diffused and transmitted to the entire base material 2 adhered to the base material.

<B> Mesh The mesh 3 is knitted in a net shape by a dispersing material 4 such as a band-shaped tape or a string. As a material of the dispersion material 4, for example, nylon, aramid fiber, hemp, high-strength fiber, steel material, or the like can be used. Further, the mesh 3 may be formed of various known wire meshes, expanded metal, perforated plates, or the like. The size of the opening (mesh) of the mesh 3 is set so that the base material 2 on both sides of the mesh 3 is not divided and the continuity of the base material 2 can be ensured. As a mode of embedding the mesh 3, only one mesh 3 may be embedded in the base material 2, but a plurality of meshes 3 are embedded in multiple stages at predetermined intervals as shown in FIGS. It is desirable. Further, as shown in FIG. 3, it is desirable to fix the intersections 5 of the respective dispersion members 4 in consideration of the dispersibility of the force. However, the intersections 5 of the dispersion members 4 may not be fixed. Further, as another arrangement of the mesh 3, as shown in FIG. 4, the periphery of each mesh 3 is connected with a dispersing material 4 constituting the mesh 3, or as shown in FIG. The spaces may be connected by the dispersing material 4. As a method of manufacturing the lightweight block body 1, for example, the mesh 3 is placed in a mold without slackening, and a resin is foamed in the mold or rubber or the like is poured into the mold.

[0008]

[Action]

<A> Impact Absorbing Action As shown in FIG. 1, when an object 6 such as a falling rock collides with the lightweight block body 1 with a large impact force, the impact energy of the object 6 acts in the penetrating direction of the lightweight block body 1. In the case of a conventional block, only the base material in the collision area bears the impact energy of the object 6 that acts intensively. On the other hand, in the present invention, the impact energy of the object 6 acting on a part of the mesh 3 is transmitted to the entire mesh 3 having continuity. Since the mesh 3 and the base material 2 are in a fixed relationship, the impact energy of the object 6 dispersed on the mesh 3 is effectively attenuated by the shock absorbing performance of the base material 2 in the non-collision range. The above-described damping effect is achieved by the meshes 3 embedded in the lightweight block body 1 and the base material 2 attached to each mesh 3.
Done in That is, the mesh 3 functions to diffuse the impact energy and transmit the diffused impact energy to the base material 2 in the non-collision range. Therefore, impact energy to be borne by the base material 2 in the collision range is reduced, and destruction of the base material 2 in the collision range is reduced. Also, mesh 3
Functions to prevent the object 6 from penetrating in addition to the above function.

<B> Restoring Function In the conventional block, if the base material in the collision area is destroyed by the collision of the object, it is almost impossible to restore the area.
In the present invention, the tension of the mesh 3 and the
Impact energy is stored as stress due to the overall elastic deformation. When the object 6 disappears, the stress accumulated in the lightweight block body 1 is released, and the lightweight block body 1 self-restores to its original shape.

[0010]

[Embodiment 2] In the embodiment described above, the case where the mesh 3 is embedded in the base material 2 has been described.
7 and 8, the dispersing members 4 arranged in a cylindrical shape may be combined and buried in the base material 2 to form the lightweight block body 1. In addition, the forming direction and the number of layers of the cylindrical dispersion material 4 are appropriately selected according to the application. In short, it is only necessary that the dispersing material 4 be buried three-dimensionally in the lightweight block body 1, and it is needless to say that the arrangement is not limited to the illustrated arrangement. Further, the installation form of the dispersing material 4 is not limited to a cylindrical shape, but may be any three-dimensional shape such as a polygon.

[0011]

[Embodiment 3] FIG. 9 shows that a dispersion material 4
Shows another lightweight block body 1 in which is covered in a net shape. In this example, the dispersing material 4 is embedded in the base material 2 as in the embodiment described above. Also, if the dispersing material 4 to be coated and the base material 2 are bonded to each other, the buffer function is enhanced.

[0012]

Fourth Embodiment FIG. 10 shows an embodiment in which a plurality of lightweight blocks 1 constitute a buffer block. In this example, by connecting the dispersing members 4 covering the outer periphery of the lightweight block body 1 shown in FIG. 9 with the connecting dispersing member 4a,
The impact energy directly acting on each lightweight block 1 is
Via the connecting dispersing member 4a, it can be transmitted to the lightweight block body 1 on which no impact acts directly and attenuated. FIG.
As shown in FIG. 1, the outer periphery of the plurality of lightweight block bodies 1 described above may be covered with the dispersing material 4 in a net shape.

[0013]

Embodiment 5 Each of the above embodiments may be appropriately combined.

[0014]

As described above, the present invention has the following effects. <A> Since the dispersing material provided with continuity in the lightweight block body transmits the impact energy acting on a part of the lightweight block body in a distributed manner, the impact energy can be effectively attenuated. <B> The lightweight block body can be made thinner. <C> The strength and cushioning performance of the lightweight block body can be arbitrarily set by changing the width, interval, and the like of the dispersion material. <D> Damage in the range where the impact directly acts is reduced. <E> The resilience is improved, and the damping performance can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a partially omitted lightweight block body according to the present invention.

FIG. 2 is a sectional view of the lightweight block body of FIG. 1;

FIG. 3 is a sectional view of III-III in FIG. 2;

FIG. 4 is a cross-sectional view of another lightweight block body in which peripheral edges of a plurality of meshes are connected by a dispersing material.

FIG. 5 is a cross-sectional view of another lightweight block body in which a plurality of meshes are entirely connected by a dispersing material.

FIG. 6 is an explanatory perspective view of a buried form in which a dispersion material is arranged in a cylindrical shape.

FIG. 7 is a partial sectional view of a lightweight block body in which the dispersing material of FIG. 6 is arranged.

FIG. 8 is a partial cross-sectional view of another lightweight block body in which the dispersing material of FIG. 6 is arranged.

FIG. 9 is a perspective view of a part of another lightweight block body having an outer peripheral surface coated with a dispersing material.

FIG. 10 is an explanatory view of a buffer block configured by individually connecting the dispersing members between the lightweight blocks.

FIG. 11 is an explanatory view of another buffer block configured by surrounding a plurality of lightweight blocks with a dispersing material.

FIG. 12 is a model diagram for explaining a buffering principle of a conventional lightweight block body.

[Explanation of symbols]

 1 ... lightweight block body, 2 ... base material, 3 ... mesh, 4 ... dispersion material, 5 ... intersection of dispersion material, 6 ... object.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E01F 7/04

Claims (2)

(57) [Claims] Composed of 1. A shock absorber, in lightweight block of shock absorption acquisition, the dispersion material which is formed in a mesh shape in base material of the block as well as bonded embedded in multiple stages, the multiple stages located By using a separate dispersing material between the peripheries of the mesh-shaped dispersing material, it is connected to each other with continuity so that the external force acting on a part of the block is distributed and transmitted as a whole. A lightweight block body characterized by being buried. 2. A lightweight block body for absorbing shock, comprising: a single block made of a shock absorbing material; and a dispersing material, wherein an external force acting on a part of said block is dispersed and transmitted to the entire block. A lightweight block body characterized in that the outer peripheral surface of the entire block is covered with a dispersing material in a mesh shape.