Steel pipe column insertion accurate positioning structure and construction method for accurate positioning

Abstract

The invention belongs to the technical field of deep foundation pit construction, and discloses a steel pipe column insertion accurate positioning structure. The steel pipe column insertion accurate positioning structure comprises a steel pipe column, wherein a tool joint is connected to the outer side of the steel pipe column. The steel pipe column insertion accurate positioning structure furthercomprises a preset hole, a protective cylinder arranged in the preset hole and a positioning platform; one end of the protective cylinder is exposed out of the ground; the positioning platform is positioned above an opening of the preset hole and connected with the ground through threaded steel; the positioning platform is provided with a positioning pin used for limiting the steel pipe column; the steel pipe column is inserted into the protective cylinder; section steel is arranged on the two sides of the end, exposed out of the ground, of the protective cylinder; channel steel is perpendicularly arranged on the section steel; and the bottom end of the steel pipe column is fixed to the plane of the bottom of the hole through a fixing piece. According to the steel pipe column insertion accurate positioning structure, on the basis that the input cost is saved, the perpendicularity and the center position of the steel pipe column can be directly measured in the whole construction process, correction is conducted in time after the cost is reduced, and the uncontrollability of error accumulation and untight contact between the steel pipe column and a positioner in a traditional technology is avoided. The invention further discloses a construction method for conducting accurate positioning through the structure.

Description

technical field [0001] The invention belongs to the technical field of deep foundation pit construction, and in particular relates to a construction method for inserting a steel pipe column into a precise positioning structure and precise positioning. Background technique [0002] With the rapid development of China's economy and the acceleration of urbanization, urban construction has entered a period of great development, and the enthusiasm for construction in various places is increasing day by day. However, the increasingly prosperous cities create fewer and fewer conditions for construction and leave less and less time for construction. Construction is difficult. getting bigger. The above phenomena are mainly reflected in: large project scale, many foundation pit groups, large foundation pit area and deep depth. It is known that the cover-excavation method is to build the enclosure structure and intermediate piles of the foundation pit downward on the ground surface. T...

AI Technical Summary

Problems solved by technology

However, it is more complicated when it comes to the underground excavation of urban subway stations and the positioning of steel pipe columns in deep foundation pits

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