Bearing platform construction method

Abstract

The invention relates to the technical field of civil engineering construction, in particular to a bearing platform construction method. The bearing platform construction method comprises the following steps that an isolation layer is arranged on the well wall of a bearing platform pouring section in a well hole of an open caisson; and a bearing platform is poured on the inner side of the isolating layer to the steel pipe column. A step platform is arranged at the position of a well opening of the well hole and is in a step shape, the bearing platform pouring section comprises an upper half section located above the step platform and a lower half section located below the step platform, and isolation layers are arranged on the well wall of the bearing platform pouring section in the well hole and comprise the steps that an upper isolation layer is arranged on the well wall corresponding to the upper half section, and a lower isolation layer is arranged on the well wall corresponding to the lower half section. A platform isolation layer is arranged on the stepped platform, and a lower isolation layer is arranged on the well wall corresponding to the lower half section. According to the scheme, the problems that in the prior art, when a compartment and the well wall in the open caisson crack, the vertical bearing capacity of the open caisson becomes weak, and if a bearing platform is directly poured above the open caisson, the open caisson is further damaged can be solved.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a construction method for a bearing platform. Background technique [0002] A building or building foundation located at a certain depth underground is first made into a caisson on the surface, and then the caisson is gradually sunk under the action of its own weight by continuously digging soil from the well under the protection of the wall of the well to reach the predetermined level. After the elevation is designed, the back cover is carried out to build the internal structure. It is relatively safe and reliable in technology, with less soil excavation and less impact on adjacent buildings. The caisson foundation is buried deeply, has good stability, and can support large loads. [0003] During caisson construction, when the concrete caisson encounters sand casting or sudden sinking during the sinking process, it is prone to cracking. [0004] However,...

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Problems solved by technology

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide a cap construction method, which can solve the problem that in the prior art, when cracks appear in the inner compartment and well wall of the caisson, its vertical bearing capacity will become weaker. If the cap is poured directly above the caisson, it will cause further damage to the caisson

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