A method for measuring the cross section of the base during the subsidence of the caisson

Abstract

The invention relates to a method for measuring the cross-section of a basement during the sinking process of a caisson, which comprises the following steps: fixing positioning piles and mounting frames around the caisson; disturbing and settling the caisson; erecting and trial running analysis equipment; measuring and calibrating equipment errors; connecting Sonar probes, directional sonar probes; opening the hoisting components to deploy sonar probes; collecting and recording image information; obtaining sonar images at different heights from the bottom; post-processing sonar data. According to the sonar scanning results of the bottom of the caisson, on-site analysis is carried out to obtain sonar images at different heights from the bottom for subsequent processing of sonar data. The sonar image detection is easy to operate, and the topography in the caisson is presented in the form of images with high resolution results. Strong intuitiveness and high operating efficiency, it can judge the distribution of obstacles at the bottom of the caisson and the soil extraction in the caisson, effectively guide the project construction, facilitate the monitoring of the collapse of the shaft wall and the landform of the caisson, and improve the construction efficiency of the project.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a method for measuring a base cross section during caisson sinking. Background technique [0002] During the construction, some buildings are buried deeply, the water content in the soil is high, and the groundwater level is high. It is difficult to solve the drainage problem after large-scale excavation, and the cost increases a lot; Suitable for large excavation construction. Under the above circumstances, caisson construction is a better construction method. [0003] At present, caisson construction is a mature construction technology, which is widely used in deep pits, basements, pump rooms, deep equipment foundations, bridge piers, wharves and other projects. However, due to the uneven bearing capacity of the foundation soil and the influence of groundwater in caisson construction, During caisson construction, it is more difficult to control the verticality and positio...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned technology has the following defects: it can play a good role in caisson subsidence depth and caisson correction, but it cannot detect the specific landform in the well, and cannot monitor well wall collapse and bottom landform well. Simple

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