JPS627325B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, when repairing a waterway, etc., if the amount of water flowing through the waterway is large, it is necessary to stop the water flow by some method or create a new route to guide it downstream.

The present invention provides a construction method and device that allows repair work to be carried out while allowing running water to flow down a temporary waterway that utilizes a part of the present invention itself, without damming the flowing water or opening another route. . One of the embodiments will be explained.

A square pipe is used as the steel frame, and each steel frame is connected to each other with bolts so that it can be disassembled and assembled freely. The front and rear surfaces of the frame device have a lattice structure to reduce the resistance when the frame device sinks and to prevent the filling material from flowing out, and the gratings stretched between the frames are attached with bolts. make it. Several flat steels or the like are bolted to the bottom of the frame device to the extent that the weight of the filling material can be transferred to the main structure of the steel frame. In this way, in the front view of FIG. 3, the upper and lower sides are parallel and the lower side is small, forming a trapezoidal shape, and between the lower side and the corresponding upper side is a water outlet 1 which is a passage for running water. The triangular parts in the left and right front views are the filling parts 2, into which a filling material such as bagged sand, for example, is fed from the upper surfaces 3, 3. Grating is applied to the front surface (left slope in FIG. 2) and rear surface (right upright surface in FIG. 2) of the filling part to form a lattice structure. A water gate is provided at the rear of the water outlet 1 (upper part of FIG. 1), and a gate 7 adjusts the amount of water flowing. A collar 15 for attaching the corrugated pipe 5 is provided on the rear surface 9 of the frame device, which is the rear part of the water gate 8. (Fig. 2) The gate 7 moves up and down along the gate post 6 of the water gate. 4 is corrugated pipe 5
It is a running water outlet. The inner surfaces 10 and 13 have a waterproof structure. As shown in FIGS. 2 and 4, a watertight rubber body 11 having an inner hole 12 may be provided in a direction perpendicular to the plane of the paper in order to ensure watertightness of the lower surface of the frame device. The space between the water outlet 4 and the frame device is sealed in advance with a waterproof cloth or the like.

The above frame device can be disassembled and assembled freely by bolt connection.

The method of the present invention uses the above-mentioned frame device, in which the device is sunk from above at right angles to the flow upstream of the waterway to be constructed, and the filling material is placed in the filling portions 2 and 2.
When filled with water, the flow gradually concentrates toward the water outlet 4, while the filling material makes the entire frame device resist the flowing water, and as the weight of the filling material increases, it gradually stabilizes and stops water. Therefore, if water flows out only from the water inlet, the gate is closed to temporarily stop the flow of water, and the corrugated pipe 5 is attached. After this, the gate 7 is opened to allow running water to flow into the temporary waterway, and construction begins. After construction is completed, the filling material is removed one by one, and only the frame equipment is lifted up using a crane, etc., and disassembled on land and transported away.

Therefore, according to the present invention, not only in the case of the same river width but also in the case of an approximate width, it can be reused many times.
Temporary cofferdams can be easily installed in an extremely short period of time without having to perform temporary cofferdam work on the spot each time construction is carried out, as is the case with conventional methods. In addition, it is quick and easy to disassemble and transport, which improves mobility and reduces construction time. This has many effects such as shortening the time, reducing costs, and improving mobility.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the frame device of the present invention, Fig. 2 is a side view, Fig. 3 is a front view, and Fig. 4 is a partial side view.
The figure is a perspective view for explanation. 1... Water outlet, 2... Filling part, 3... Upper surface, 4... Water outlet, 5... Corrugated pipe, 6... Gate post, 7... Gate, 8
...Sluice gate, 9...rear side.

Claims (1)

[Scope of Claims] 1 The front face is formed into a trapezoidal shape with a small lower side, and the side face is formed into a trapezoidal hollow box body with a large lower side using a steel frame, and a water gate for regulating flow is provided in the center of the front side. A water outlet is provided, and a frame device is used on the left and right sides of which constitute a filling part into which filling material can be filled, and after the frame device is submerged in river running water, the filling material is filled into the filling part. A waterway temporary cofferdam construction method in which running water is discharged only from the water outlet, and the frame is removed after construction is completed. 2 The steel frames are combined to form a hollow box with a trapezoidal front with a small bottom edge and a trapezoid shaped side with a large bottom edge, with a water outlet with a water control sluice in the center of the front. A frame device for temporary cofferdam of a waterway, in which a filling part is provided on the left and right sides of the filling part for filling with filling material, and the steel frames are connected to each other so that they can be disassembled.