Steel pipe hoisting method in the construction of steel pipe column by hole pile method

Abstract

The invention discloses a steel pipe hoisting method used in hole-pile method steel tube column construction. The steel pipe hoisting method used in the hole-pile method steel tube column construction comprises the following steps of 1 arranging multiple temporary hanging rings on a pilot tunnel initial support and enabling the temporary hanging rings to be symmetrical relative to the central axis of a vertical hole; 2 clamping the temporary hanging rings on main grid bars of the pilot tunnel initial support and connecting the hanging rings with steel pipe columns through a hoist; 3 controlling the hoist to hoist the steel pipe columns. Traction force of the hoist is adjusted to enable the central axes of the steel pipe columns to coincide with the central axis of the vertical hole, and then the steel pipe columns are hoisted into the vertical hole. The steel pipe columns are reasonably segmented according to the size of a narrow space of the pilot tunnel, segmentation nodes of the steel pipe columns are decreased, and the overall stability of the steel pipe columns is improved. An existing structure at the top of the pilot tunnel structure is fully utilized to arrange the hanging rings, carrying, installation and dismounting operations of a mobile portal are omitted, the hoisting efficiency is improved, and the construction speed is improved.

Description

technical field [0001] The invention relates to a hoisting construction method, in particular to a steel pipe hoisting construction method for a steel pipe column by a hole pile method. Background technique [0002] With the development of urbanization, municipal rail transit has become an integral part of the important traffic in the city. Various rail transit lines are arranged in a staggered manner, covering every corner of the city. Rail transit transfers have undoubtedly become the hub of various transportation lines. Although most transfers in China have realized transfers within stations, the transfer lines are long and difficult for passengers. Unnecessary trouble has been brought about; "zero-distance" transfer has become the mainstream trend in the development of urban rail transit; super-high transfer sections need to be set up for zero-distance subway transfers, which are used as transfers between two lines, and steel pipe columns are used as hole piles The core...

AI Technical Summary

Problems solved by technology

Various rail transit lines are arranged in a staggered manner, covering every corner of the city. Rail transit transfers have undoubtedly become the hub of various transportation lines. Although most transfers in China have realized transfers within stations, the transfer lines are long and difficult for passengers. Unnecessary trouble has been brought about; "zero-distance" transfer has become the mainstream trend in the development of urban rail transit; super-high transfer sections need to be set up for zero-distance subway transfers, which are used as transfers between two lines, and steel pipe columns are used as hole piles The core component of PBA construction, whether it is construction difficulty and construction accuracy, directly affects the construction of PBA construction method.

[0003] The conventional PBA construction method adopts the fully assembled installation of the steel pipe column, that is, the steel pipe column is directly installed on site after processing in the processing plant. Difficult to move the frame, great safety risk

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