Civil engineering structure

Abstract

To provide a civil engineering structure with improved strength in the vertical direction and stability in the horizontal direction.SOLUTION: A civil engineering structure comprises an arrangement of a base part and a laminate of leg-attached bases each having a leg protruding from the base part, wherein the leg-attached base further has a post hole in the base part, and the civil engineering structure further comprises a support pillar penetrating through the laminate via the post hole.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a buried civil engineering structure (frame structure / void structure).

Background Art

[0002] There is known a water storage tank that forms a rainwater storage space by installing a civil engineering structure in which a large number of high-void ratio blocks (pedestals) are stacked in a depression and backfilling with soil (for example, Patent Document 1). The civil engineering structure can also be used for forming a dam structure, an embankment, etc.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] The pedestals constituting the conventional civil engineering structure were made of plastic (for example, Patent Documents 2 and 3). Therefore, there was a problem that the strength in the vertical direction was low and it was deformed by the earth pressure from above. An object of the present invention is to provide a civil engineering structure capable of improving the strength in the vertical direction.

Means for Solving the Problems

[0005] This application discloses a civil engineering structure in which a laminate of pedestals having a pedestal portion and leg portions protruding from the pedestal portion is arranged, the pedestal further has column holes in the pedestal portion, and the civil engineering structure further has columns penetrating the laminate through the column holes.

Brief Description of the Drawings

[0006]

Figure 1

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Embodiments for Carrying Out the Invention

[0007] FIG. 1 shows a civil engineering structure 1 according to an embodiment of the present invention. By installing the civil engineering structure 1 in the depression 2 covered with a waterproof sheet and backfilling with soil, a water storage tank 3 capable of storing rainwater and the like can be formed. Above the water storage tank 3, it can be used as a parking lot, a road, a park, or the like. The civil engineering structure 1 may be installed under a road surface or a house foundation and used as an embankment, or installed at the bottom of a dam to form a dam structure. A wall material 4 and a ceiling plate 5 may be provided on the side or upper part of the civil engineering structure 1.

[0008] Figures 2 and 3 show the civil engineering structure 1. The civil engineering structure 1 has a plurality of laminates 20 arranged in a horizontal plane, and each laminate 20 has a plurality of pedestals 10 with legs. The pedestals 10 adjacent to each other vertically may be arranged upside down. As shown in the figure, when the bottom pedestal 10 is laminated with the legs 12 facing downwards, the water flow can be improved, and the flow of mud at the bottom of the water storage tank 3 can be improved.

[0009] The civil engineering structure 1 has a first support column 30a that penetrates from the top to the bottom of the laminate 20. The first support column 30a is preferably a pipe such as a fume pipe or a PVC pipe. The first support column 30a can be a pipe, and charcoal can be filled therein to purify the water in the water storage tank 3, or mortar or resin can be filled to further improve the strength in the vertical direction. The same applies to the second and third support columns 30b and 30c described later and the support columns inserted into the legs 12 described later. The civil engineering structure 1 preferably further has column bases 40 above and below the first support column 30a and a joint 50 that connects the adjacent laminates 20.

[0010] Figure 4 shows a pedestal 10 of one embodiment used in the civil engineering structure 1. As shown in the figure, the pedestal 10 has a base portion 11 and legs 12 protruding from the base portion 11. The legs 12 may have a cylindrical shape with a constant cross-sectional area in the height direction, but may also have a frustum shape that tapers upwards as shown in the figure. In the figure, the cross-section of the legs 12 is circular, but other shapes such as polygons may also be used. Further, the pedestal 10 has a first column hole 13a into which the first support column 30a is inserted in the base portion 11. It is preferable to have joint holes 14 at the four corners etc. of the base portion 11.

[0011] Figure 5 shows the column base 40. As shown in the figure, the column base 40 preferably has a recess 41. The upper and lower ends of the pipe-shaped first support column 30a may be fitted into the recess 41.

[0012] Figure 6 shows the joint 50. The joint 50 has a base portion 51 and a convex portion 52. By inserting the convex portion 52 into the joint hole 14 of the pedestal 10, the adjacent pedestals 10 can be connected, and thus the adjacent laminates 20 can be connected.

[0013] In the civil engineering structure 1 of the above-described embodiment, since each component (the pedestal 10 with legs, the laminate 20, the first column 30a, the column base 40, the joint 50) can be made small and lightweight, construction (assembly) is easy and manual construction is also possible. By having the first column 30a, the strength of the civil engineering structure 1 in the vertical direction is improved and / or the stability in the horizontal direction is improved.

[0014] Figs. 7 and 8 show the civil engineering structures 1A and 1B of the second and third embodiments, and Fig. 9 shows the pedestal 10a of the civil engineering structures 1A and 1B. As shown in the drawings, the pedestal 10a has two types of first column holes 13a and second column holes 13b with different sizes, and a first column 30a (for example, a hume pipe) and a second column 30b (for example, a PVC pipe) with different thicknesses can be inserted into each of them. In the civil engineering structure 1A, only the first column 30a is inserted, and in the civil engineering structure 1B, only the second column 30b is inserted. Column bases 40a similar to the column base 40 may be arranged above and below the second column 30b. The rest can be the same as the civil engineering structure 1.

[0015] Figs. 10 and 11 show the civil engineering structures 1C and 1D of the fourth and fifth embodiments. As shown in the figures, a plurality of laminates 20 with pedestals 10b laminated thereon are arranged at intervals, and the spaces therebetween are connected by joints 50b. The end laminates 20 may be connected by joints 50b1 with different sizes. Third column holes 13c (Fig. 12) are formed in the joints 50b and 50b1, and third columns 30c are inserted therein. In the civil engineering structure 1C, the first column 30a is inserted into the first column hole 13a, and in the civil engineering structure 1D, the second column 30b is inserted into the second column hole 13b. The rest can be the same as the civil engineering structures 1, 1A, and 1B.

[0016] In the above civil engineering structures 1, 1A to 1D, a vertically penetrating hollow may be formed in the leg portion 12 of the pedestal 10 or 10a, and a column penetrating from the top to the bottom of the laminate 20 may be inserted into the hollow. The column can be the same as the first to third columns 30a to 30c. The columns of the leg portion 12 are preferably applied to the civil engineering structures 1C and 1D, and even when the interval between the laminates 20 becomes large, civil engineering structures 1C and 1D with sufficiently high strength and stability can be provided.

[0017] In the civil structures 1A to 1D, by determining which of the first to third column holes 13a to 13c the first to third columns 30a to 30c are inserted into, it is possible to balance between cost and ease of access (ease of entry for inspection, cleaning, maintenance, etc. inside the civil structure 1) and the strength and stability of the civil structures 1A to 1D. In the civil structures 1C and 1D, by using the joint 50b with a large size (or a large interval between the convex portions 52), it is possible to further facilitate entry into the civil structure.

[0018] The civil structures 1, 1A to 1D described in the above embodiment, and the dimensions, shapes, arrangements, numbers, etc. of their elements are examples, and other aspects are also possible.

Explanation of Reference Numerals

[0019] 1, 1A to 1D... Civil structure 2... Depression 3... Water storage tank 4... Wall material 5... Ceiling 10, 10a, 10b... Pedestal with legs 11... Base portion 12... Leg portion 13a to 13c... First to third column holes 14... Joint hole 20... Laminate 30a to 30c... First to third columns 40, 40a... Column base 41... Concave portion 50, 50b, 50b1... Joint 51... Base portion 52... Convex portion

Claims

1. A civil engineering structure in which a laminate of pedestals with legs protruding from the pedestal is arranged, wherein the pedestal with legs further has column holes in the pedestal, and the civil engineering structure further has columns passing through the column holes and penetrating the laminate.

2. The civil engineering structure according to Claim 1, wherein the column holes include first column holes and second column holes with different sizes.

3. The civil engineering structure according to Claim 1, wherein the column is tubular and further has column bases fitted to the ends of the column above and below the column.

4. The civil engineering structure according to Claim 1, wherein the pedestal with legs further has joint holes in the pedestal, and a plurality of the laminates are connected by joints having convex portions fitted to the joint holes.

5. The civil engineering structure according to Claim 4, wherein the joint has third column holes, and the civil engineering structure further has third columns passing through the third column holes.

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