JPS621069B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing an underground storeroom using synthetic rubber bags made by high frequency welding.

The present inventor previously invented a method for constructing underground storage using plastic bags, and was issued a patent No. 931059 (Japanese Patent Publication No. 53-8139).
No.) was obtained. The invention of this patent No. 931059 is
A sagging part 2 is formed at the upper peripheral corner of a plastic bag 1 which has been made into a box shape in advance at a factory, and is hung by attaching waist-raising cloths 3, 3, etc. at arbitrary regular intervals, and this is inserted into the hole to be dug. Insert the concrete bottom plate 4 into the inner bottom, layer the concrete panels 5, 5, etc. on the inner peripheral wall, cover the top with the cover plate 7 with the entry hole 6, and backfill the excavated hole. This is an underground storage construction method using plastic bags, which is characterized by the construction being carried out in a buried state.

However, plastic bags are stretchy, flexible,
It has been found that there are problems with elasticity, durability, workability, etc. Plastic bags do not have sufficient elasticity and often puncture or tear when stretched. It is also not flexible enough, and although it can be bent, it lacks elasticity. Furthermore, the durability is insufficient, and parts exposed to sunlight are particularly problematic. Furthermore, vinyl is insufficient in processability. In the case of the previous patent No. 931059, a plastic bag was created by pasting it with an adhesive, etc., but in the forming method using an adhesive, after the solvent in the adhesive evaporated,
Leaves small holes in the adhesive layer. Therefore, there is no problem immediately after constructing an underground storage, but after a long period of time, groundwater begins to seep into the underground storage. This is thought to be caused by pores created after the solvent volatilized.

In order to solve the various problems mentioned above, as a result of extensive research, it became clear that the problems could be solved by using synthetic rubber bags made by high frequency welding instead of plastic bags, which led to the present invention. It is something.

Synthetic rubber bags made by high-frequency welding have the following advantages over plastic bags. That is, they are stretchable and less likely to puncture or tear during storage construction than plastic bags.
It also has flexibility and elasticity, making it easier to construct a storage space than plastic bags. Furthermore, it has good durability, especially in areas that are exposed to sunlight, which is better than vinyl. Furthermore, since it was created using high-frequency welding, there were no holes on the welded surface, completely eliminating leakage of underground water. High frequency welding of vinyl has poor workability, and high frequency welding of vinyl is inappropriate for constructing underground storage.

The present invention will be explained below with reference to the drawings. In the present invention, a synthetic rubber bag 1 is made in advance into a box shape in a factory by high-frequency welding, and a slack part 2 is formed at the upper circumferential corner part, and the slack part 2 is attached and hung at arbitrary equal intervals with waist-raising cloth 3, 3... Then, insert this into a hole drilled to approximately the same volume, and insert the concrete bottom plate 4 into the inner bottom.
It is characterized by laminating concrete panels 5, 5, etc. on the inner peripheral wall, covering the top with a cover plate 7 with an entrance hole 6, and backfilling the excavated hole to perform construction in a buried state. . 8 is earth. The synthetic rubber bag 1 is made in advance into a box shape by high frequency welding in accordance with required standards at a factory. A hole slightly larger than the volume of the synthetic rubber bag is dug in the soil in the area where the basement of the building is to be constructed, the synthetic rubber bag is first inserted and held in the hole, and a concrete bottom plate is placed in the inner bottom. Then, concrete panels are stacked along the inner wall of the synthetic rubber bag to form the wall surface.After the concrete box is constructed, when the outer periphery of the synthetic rubber bag is pressed with sand or backfilling soil, the soil Even if the sheet surface of the synthetic rubber bag is pulled down together due to consolidation settlement, each waist raising cloth 3, 3 is cut midway, and the slack portion 2 of the sheet surface becomes loose to relieve the tension, and the sheet surface cutting is prevented. Therefore, there is no need to place a worker outside the bag during construction, and there is no need to drill an extra hole with the same volume as the bag. And after constructing the underground storeroom, there is no infiltration of groundwater.

According to the method of the present application, synthetic rubber bags can be made in advance at a factory to obtain a completely reliable water-blocking effect, the holes to be drilled can be small, and there is no need to cut the sheet after re-drilling. This has the effect that a completely waterproof basement can be constructed efficiently and inexpensively in a short period of time. In particular, the present invention utilizes synthetic rubber bags made in advance into a box shape at a factory by high-frequency welding, so it is possible to construct an underground storage room that is superior in stretch, flexibility, elasticity, durability, and workability compared to plastic bags. Since it is a law, it is possible to obtain the effect of making it easier to use the underground storage room.

[Brief explanation of the drawing]

The drawings are perspective views showing embodiments of the invention. 1...Synthetic rubber bag, 2...Sag part, 3,3
...Waist-raising cloth, 4...Concrete bottom plate, 5,5
... Concrete panel, 6 ... Entrance hole, 7 ... Cover plate, 8 ... Soil.

Claims (1)

[Claims] 1. A synthetic rubber bag 1 is made in advance into a box shape at a factory by high-frequency welding, and slack parts 2 are formed at the corners of the upper periphery, and the bag is attached and suspended at arbitrary equal intervals with waist-raising cloths 3, 3... Insert this into the excavated hole, insert the concrete bottom plate 4 into the inner bottom, stack concrete panels 5, 5...... on the inner peripheral wall, cover the top with a cover plate 7 with an entry hole 6, An underground storage construction method characterized by backfilling the excavated hole and constructing it in a buried state.