A kind of air bag mold and its construction method for building concrete cellar body

Abstract

The invention relates to an airbag die for building a concrete cellar body and a construction method thereof. The airbag die consisting of an airbag and an inflating assembly is utilized to form an inner die for construction; round holes are formed at the centers of the top and the bottom of the airbag; the round holes are provided with covered edges which respectively clamp an airbag fabric from both inside and outside; the inflating assembly comprises a top inflating part, an air valve and a bottom connecting piece; the top inflating part comprises a hollow round rod passing through a via hole reserved by the top covered edge; corresponding to the top covered edge, the hollow round rod is provided with a ring-shaped fixed edge which is positioned outside the airbag and radially extends outwards; the air valve is mounted outside a part, which extends out of the top of the airbag, of the hollow round rod; a plurality of inflating holes are formed inside a part, which extends into the airbag, of the hollow round rod; the bottom connecting piece comprises an auxiliary centring rod which is welded at the position of the bottom covered edge, is correspondingly positioned at one side outside the airbag and is provided with an arc end part; an auxiliary device for fixing the lower end of the hollow round rod is arranged on the auxiliary centring rod or the covered edges. The airbag die has the advantages of convenience in assembling, disassembling and transportation and easiness for standard and scale production.

Description

Technical field [0001] The invention relates to an airbag mold for constructing cellar pits and a construction method thereof, in particular to an airbag mold for constructing cellar bodies such as concrete water cellars, biogas cellars, and a construction method thereof. Background technique [0002] my country has a vast territory, and there is a huge demand for concrete water cellars and biogas cellars. Various forms are used in the process of concrete cellar construction. The Chinese patent ZL201210016145.1 provides a method of using undisturbed soil foundation pits and airbags as internal and external mold The slab concrete cellar construction technology reduces the cost of cellar construction, increases the speed of cellar construction, and improves the crack resistance of the concrete cellar body. However, the airbag template provided by this patent still has room for improvement: 1. Three layers of airbag The structural design makes the manufacturing process of large air...

AI Technical Summary

Problems solved by technology

Chinese patent ZL201210016145.1 provides a foundation pit with undisturbed soil and an air bag as the inner and outer mold The concrete water cellar construction technology of the slab reduces the cost of cellar construction, improves the speed of cellar construction, and improves the crack resistance of the concrete cellar body. However, the airbag formwork provided by this patent still needs to be improved: 1. Three layers of airbags Structural design makes the production process of large airbags more cumbersome, which is not suitable for large-scale standardized production; 2. The assembly and disassembly of airbags and central rods are difficult, and the length of the device is relatively large, which makes transportation inconvenient

3. There are no steel bars in the cellar body, so it is not suitable for building cellars in places with frequent changes in concentrated stress. For example, the urban soil conditions are complex and the live load changes frequently. This technology is not suitable for the construction of water cellars in sponge cities

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