JPH0313613A - Damming bank using steel cell - Google Patents

Abstract

PURPOSE:To increase the strength and to facilitate maintenance by piercing the peripheral walls of plural steel cylindrical cells by connecting members, fixing the connecting members by fixing members to integrally arrange plural rows of steel cells, and filling up the interiors of the steel cells with filling material. CONSTITUTION:Angle rings 2 are disposed on the insides of the upper and lower end portions of a steel cell 1, and reinforcements 3 are disposed radially from the rings 2 and fixed to the peripheral wall of the cell to reinforce the cell. The cells 1 are arranged in plural rows to form a damming bank A. In this case, the peripheral walls of the adjacent cells 1 are brought into contact with each other, and screw bars 4 as a connecting member are pierced through the peripheral walls of the cells 1. Nuts as fixing members a are screw-engaged with the screw bars 4 to fix the screw bars. The interior of each cell 1 is filled up with filling material 6 such as sediment or the like, and a cover is placed on the cell.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a dam using steel cells for capturing and dispersing volcanic mudflows, debris flows, etc., and for hardening riverbeds.

[Prior art]

It is known that steel cells are used to capture and disperse volcanic mudflows and debris flows, and to construct dams to solidify riverbeds. The present applicant has proposed Japanese Patent Application No. 60-93291 (Japanese Unexamined Patent Publication No. 61-250220) as such a dam.
Patent Application No. 1983-105451
No. 8) and Japanese Patent Application No. 135386 (Sho 60-1989)
No. 294014) is disclosed.

[Problems to be solved by this invention]

All such conventional dams are made up of a plurality of steel cells arranged in a row. This type of row structure was vulnerable to side impacts and could be washed away by debris flows.

In addition, the steel cells are filled with a filling material such as concrete, but if it is not possible to pour concrete, they may be filled with earth and sand. This earth and sand could flow or sink over time, and it sometimes did not function properly as a dam.

This invention was made to solve the above-mentioned problems, and the purpose is to provide a dam using steel cells that is strong against impact and can be maintained to maintain its performance as a dam. shall be.

[Means to solve the problem]

In this invention, steel cells are used to prevent the filling material from flowing out.

The steel cell is formed of a steel plate into a cylindrical shape, and can be manufactured by a conventional well-known manufacturing method. A plurality of these steel cells are lined up to form a row. These rows are arranged in multiple rows to form the entire dam using multiple rows of steel cells.

Adjacent steel cells are arranged so that their peripheral surfaces are in contact with each other. A connecting member is passed through the peripheral walls of these adjacent steel cells. The connecting member may be a screwdriver, a reinforcing bar, or the like, and the connecting member is fixed with a fixing member such as a nut for connection. All the steel cells that are adjacent to each other are connected, and thereby the entire steel cells of the plurality of rows are connected together.

Each steel cell is filled with filler material. As the filling material, concrete may be cast, or earth and sand may be filled.

The lower part of the steel cell will be buried underground if necessary.

As a steel cell, a reinforcing/stiffening material may be fixed to the inner periphery of the upper end. Various members such as I-shaped steel and T-shaped steel can be used as stiffeners, and these are fixed along the inner circumferential surface by bolts, bolts, or welding.Steel cells are filled with earth and sand, Fill with other loose items. Place a lid on top of this filling material. The lid can be made of concrete or steel.

[For production]

Multiple rows of steel cells are connected together.

Since multiple steel cells are used to counter lateral impacts, the overall strength is high.

If the earth and sand inside the steel cell flows out or sinks over time, the lid body above it will sink together with the surface of the earth and sand. Filling material can be added on top of that.

〔Example〕

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a steel cell, and a plurality of these steel cells 1 are lined up to form a row, and this row is lined up for a plurality of months to form a dam A.

Figure 1 shows a dam built to dam a volcanic mudflow.

An angle ring 2 is arranged inside the upper and lower ends of the steel cell 1, and a plurality of reinforcing bars 3 are arranged radially around the angle ring 2 and fixed to the peripheral wall of the cell 1 for reinforcement.

All of the steel cells I have the peripheral surfaces of adjacent steel cells I in contact with each other, and screw holes 4 serving as connecting members are passed through the peripheral walls. Two screws 4 pass through the hole on the left and right, spaced apart from each other by an appropriate distance, and a plurality of screw holes 4 pass through the hole vertically, spaced apart from each other at an appropriate distance. A nut 5, which is a fixing member, is screwed onto this screw pin 4 to fix it.

The steel cell 1 is filled with a filling material 6. In the example, earth and sand is used.

As described above, the entire structure is connected together, and if necessary, the lower part of the steel cell I is buried slightly underground.

In the steel cell I shown in FIGS. 6 to 8, an H-shaped steel 7 serving as a stiffener is fixed to the inner periphery of the upper end. The H-shaped steel 7 is bent into a semicircular shape, and is fixed along the inner circumferential surface with bolts and nuts 8. The two H-shaped steels 7 are connected by a splicing plate 9 fixed to the peripheral end.

The filling material 6 is filled with earth and sand, and a concrete lid lO is placed on top of this. The lid 10 is simply placed inside the H-shaped steel 7, which is a stiffener, and when the top surface lowers due to subsidence or subsidence of earth and sand, the lid 10 also lowers at the same time. The concrete lid 10 is made by dividing a circle into four parts and forming a set using the four parts. The thickness of the lid body 10 is 300 mm in the embodiment.

When the filling material 6 is lowered, the lid 10 also lowers due to its own weight, and the space created on the lid 10 can be filled with the filling material 6.

〔Effect of the invention〕

The present invention has the above configuration and can obtain the following effects.

■ Multiple rows of steel cells are connected to each other with connecting materials to form an integrated dam, making the dam strong against lateral impacts.

@ Since the lid is placed on top of the filling material, if the filling material flows out or sinks, the lid will also drop at the same time, making it possible to replenish the filling material on top to maintain its performance as a dam. can.

Even when the lid is lowered, the stiffening material maintains the strength of the steel cell.

[Brief explanation of drawings]

Figure 1 is a perspective view of the dam constructed to stop volcanic mudflow, Figure 2 is its side view, Figure 3 is its plan view, Figure 4 is a partial plan view, and Figure 5 is the steel dam. Fig. 6 is a perspective view of another embodiment of the steel cell, Fig. 7 is a partial perspective view thereof, and Fig. 8 shows filling material added to the lid body. It is a perspective view of a state. A... Dam, 1... Steel cell, 2... Angle ring, 3...
Reinforcing bar, 4... Screw par, 5... Nand, 6... Filling material, 7... ■1 type steel, 8... Bolt/Nand,
9... Attachment plate, 10... Lid body. Figure 1 Figure 3

Claims (2)

[Claims] (1) Multiple rows formed by arranging multiple cylindrical steel cells in succession, adjacent steel cells have their peripheral surfaces touching each other, and the peripheral walls of adjacent steel cells are penetrated. A dam using steel cells, characterized in that the connecting members are fixed by fixing members, the steel cells are connected to each other, all the steel cells are connected together, and the steel cells are filled with filler material. (2) A stiffener is fixed inside the upper end of the steel cell along the inner circumferential surface, and a lid is placed on the filling material filled inside so that it can be raised and lowered inside the steel cell. A dam using the steel cell according to claim 1, wherein the steel cell is mounted.