JP4226150B2 - Triangular prism frame concrete block for civil engineering structures - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a large-sized concrete block used for constructing civil engineering structures such as fishing reefs, revetment walls or retaining walls, roads, and railroad floors, and relates to a triangular prism-like frame-shaped concrete block.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 9-217304 proposes a triangular prism frame concrete block formed by an integrated set of beam-like concrete materials arranged at the ridge line portion of a triangular prism. The proposed concrete block is a large-sized structure suitable for efficiently building roadbeds and retaining walls using heavy machinery, and it is a civil engineering structure whose interior space is opened by stacking triangular blocks. Build up.
[0003]
When a roadbed is constructed with this structure, the area divided by the roadbed linearly on the ground surface is communicated via an open internal space formed by triangular prism frame concrete blocks. There is little risk of destroying the existing environment or ecosystem that the region had.
[0004]
[Problems to be solved by the invention]
After proposing the above triangular prism frame concrete block, the present applicants have continued to conduct research to verify the advantage of the block. In the process, the advantages of using triangular prism frame concrete blocks for the construction of revetment walls and retaining walls were found, and various improvements to be added to conventional triangular prism frame concrete blocks for their application. Proposals were proposed and examined.
[0005]
This invention was made as a result of the research based on the above proposals or examinations, and it is possible to economically and efficiently construct a strong and stable revetment wall and retaining wall having high fusion with the natural environment. In addition, an object of the present invention is to provide an improved triangular prism frame type concrete block that can be used for constructing fishing reefs and the like.
[0006]
[Means for Solving the Problems]
In this invention, the above-mentioned problem is solved by providing a grid integrated with a frame material on one or two surfaces of a peripheral surface of a triangular prism frame concrete block, that is, one or two surfaces having a rectangular frame shape. ing. The lattice is formed by a plurality of crosspieces, and there are openings between the plurality of crosspieces that connect the inside and the outside of the block. The lattice may have a fitting structure, but a structure that is integrally formed with the frame is suitable for manufacturing. The coarseness of the lattice may be determined in consideration of the production and the particle size of the filler filled in the block. If necessary, a net or a water-permeable mat can be attached to the back of the grid when constructing a retaining wall, etc., thereby preventing the internal filler from flowing out of the grid eyes.
[0007]
Triangular prism frame concrete block is a large block with a side length of 2 to 3m or more, and has great advantages when building various civil engineering structures using heavy machinery. . Therefore, in the conventional triangular prism frame concrete block, a considerably large opening is formed on each surface of the block. By providing a grid integrally with the frame material on one or two sides of the opening, the shielding ability between the inside and outside of the block through the face provided with the grid can be improved as necessary. It is possible to realize a more preferable function when used for fishing reefs, revetment walls, retaining walls, etc. without impairing the compatibility with the natural environment.
[0008]
According to a first aspect of the present invention, there is provided a triangular prism frame type concrete block for a civil engineering structure in which a triangular prism frame is formed by an integrated set of elongated concrete frame members arranged at a ridge line portion of the triangular prism. A triangular prism frame type concrete block provided with a lattice integrated with a frame material on one side or two sides is provided.
[0009]
A second aspect of the present application provides a concrete block having a triangular prism frame-type concrete block according to the first aspect, wherein the lattice includes inclined bars extending obliquely from the frame member.
[0010]
The invention of claim 3 proposes the triangular prism frame concrete block of claim 1 or 2 considering the manufacturing method, wherein at least one has a lattice in the frame, and at least one has a lattice in the frame. It is characterized by having a structure in which three rectangular frame-type concrete blocks that do not have a structure are connected at the long side portion of each frame.
[0011]
In addition, by including a bar extending obliquely from the frame material in the grid provided in the rectangular frame portion, the strength of the block against external force in the direction in which the rectangular frame deforms into a rhombus can be increased, and the high rigidity against the deformation of the triangle It can also be applied to the surface of the rectangular frame of the triangular prism frame concrete block.
[0012]
Further, since the triangular prism frame concrete block according to claim 3 forms a triangular prism frame by combining two-dimensional rectangular frames, the structure of the molding die for molding the block is simplified, and the block molding operation is also performed. Therefore, the triangular prism frame concrete block according to the present invention is useful as a means for providing at low cost.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the Example shown in drawing, the example of the concrete block based on the invention of this application and the civil engineering structure constructed | assembled by the said concrete block is demonstrated. FIG. 1 is a perspective view showing an embodiment of a concrete block according to the present invention, which is formed by a plurality of crosspieces 5 inclined at 45 degrees with respect to a frame member 4 in one rectangular frame formed on the peripheral surface of a regular triangular prism frame. The example which provided the grating | lattice used by integral molding is shown.
[0014]
The triangular prism frame-type concrete block 1 of FIG. 1 has one long rectangular frame block 2 shown in FIGS. 2 and 3 and two rectangular frame blocks 3 having no lattice shown in FIG. It is assembled by fastening with bolts and nuts inserted through the bolt holes 6 arranged along. Bolts and nuts for fastening are made of stainless steel, and mortar and adhesive are applied to the fastening surfaces 7 of the rectangular frame blocks 2 and 3, and the bolt heads and nuts are dropped into the recesses and covered with mortar and adhesive. This increases the corrosion resistance of bolts and nuts.
[0015]
The lattice is formed by a plurality of crosspieces 5 inclined at 45 degrees with respect to the frame material 4 of a rectangular frame. The fastening surfaces 7 between the rectangular frame blocks are provided at an inclination angle of 30 degrees with respect to the surface of the rectangular frame, and the short sides and the long sides of the three rectangular frames are equal to each other. By fastening, a regular triangular prism frame is formed, and a lattice is formed on one of the rectangular frame surfaces.
[0016]
FIG. 5 shows an example of a fishing reef formed on the sea bottom using a plurality of triangular prism frame concrete blocks 1 of FIG. 1, and the three blocks 1 are arranged with the surface on which the lattice 5 is provided facing outward. A trapezoidal frame-shaped fishing reef is formed by arranging in a partially stacked state. The side facing the outside of the reef has a grid so that when a small fish is chased by a large fish, it can escape through the opening of the grid. When constructing such a fishing reef, it is possible to obtain a fishing reef with better concealment if two rectangular frame surfaces facing the upper side of the two blocks arranged below are provided with a lattice. In addition, a lattice can be provided with a fitting structure on the facet of a triangular prism, and a fishing reef with higher concealment can be obtained.
[0017]
FIG. 6 shows that blocks 1 of FIG. 1 are arranged in parallel with the surface on which the grid 5 is provided facing outward, and a triangular prism frame block 8 having a conventional structure (having no grid) is stacked between the blocks 1 provided in parallel. This shows an example in which a breakwater is formed by filling the interior space with chestnut stone, quarry stone, or the like.
[0018]
Further, FIG. 7 shows that the block 1 of FIG. 1 is arranged with the surface provided with the lattice 5 facing the sea or the river, filled with chestnuts or crushed stones, and the like structure is further stacked thereon. This shows an example of building a revetment wall. Since the breakwaters and revetments of these structures are formed with a large number of narrow spaces communicating with the outside, they can provide an abundant place for small animals and plants.
[0019]
8 to 10 show an example in which a retaining wall is constructed using the blocks of FIG. In the case of the retaining wall, it may be earth and sand that is filled in the stacked blocks. By appropriately using crushed stone and crushed stone, it is possible to achieve both the strength of the retaining wall and the compatibility with the natural environment. The outflow of calculus and earth and sand from the gaps of the lattice forming the retaining wall is called a metal wire or synthetic fiber net on the back of the lattice according to the particle diameter of the filler, or a sucking prevention material It can be prevented by attaching a fine mat with fibrous water permeability.
[0020]
When constructing a retaining wall, the upper wall can be a stepped shape with the upper wall retreated from the lower wall, and the lower wall and the upper wall are the same surface as shown in the revetment wall mentioned above. It can also be stacked as the same gradient. FIG. 8 shows an example in which the second stage is retracted from the first stage and stacked, and the third stage is stacked on the same plane as the second stage.
[0021]
In addition, the slope of the slope is not necessarily limited to the slope of the block. In the example shown in FIG. 9, the slope of the retaining wall becomes steep as the upper stage is inclined by placing the upper block inclined. A retaining wall is being built.
[0022]
Further, in the example shown in FIG. 10, the steps shown in FIG. 1 are arranged with the lattice plane on the front side and tilted 30 degrees toward the front side so that the retaining wall surface of each step is vertical and the stepped step surface is formed. Trees are planted in the area as greening retaining walls.
[0023]
Since the retaining wall constructed of the concrete block of the present invention has an opening communicating with the soil behind the block on the retaining wall surface, the continuity between the retaining wall and the outside world is maintained through this opening, and air and The flow of water and the growth of various small animals and plants are possible, and it is possible to protect the cliff face in a more natural form.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a block. FIG. 2 is a front view of a rectangular frame block provided with a lattice. FIG. 3 is a side view of the rectangular frame block. Fig. 5 is a perspective view showing an example of constructing a fishing reef with the block of Fig. 1. Fig. 6 is a perspective view showing an example of constructing a breakwater with the block of Fig. 1. Fig. 7 is a revetment wall with the block of Fig. 1. FIG. 8 is a perspective view showing a first example of a retaining wall constructed by the blocks of FIG. 1. FIG. 9 is a perspective view showing the second example. FIG. 10 is a third example. FIG.
1 Concrete block 4 Frame material 5 Crosspiece

Claims (3)

In a triangular prism frame type concrete block for civil engineering structures in which a triangular prism frame is formed by an integrated set of elongated concrete frame members arranged at the ridge line portion of the triangular prism, the frame material is attached to one or two sides of the rectangular frame surface of the triangular prism. A triangular prism frame-type concrete block provided with an integrated lattice and having an opening communicating the inside and outside of the block between a plurality of bars of the lattice . 2. The triangular prism frame-type concrete block according to claim 1, wherein the lattice includes inclined bars extending obliquely from the frame member. At least one has a lattice in the frame, and at least one rectangular frame type concrete block having no lattice in the frame is connected at the long side portion of each frame to form a triangular prism frame, The triangular prism frame concrete block according to claim 1 or 2.

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