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Steel pipe hoisting method used in hole-pile method steel tube column construction

A hoisting method and technology of steel pipe columns, which are applied in the field of steel pipe hoisting construction of steel pipe columns by hole pile method, can solve the problems of difficult movement of gantry frames, long transfer lines, and high safety risks, so as to improve overall stability and speed up construction Progress, the effect of improving the efficiency of hoisting

Active Publication Date: 2014-07-23
CHINA RAILWAY ERJU 1ST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Steel pipe hoisting method used in hole-pile method steel tube column construction
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  • Steel pipe hoisting method used in hole-pile method steel tube column construction

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Effect test

Embodiment 1

[0038] Embodiment 1 Hole pile method steel pipe column hoisting construction

[0039] like figure 1 As shown in Fig. 1, the primary support 2 grid main reinforcement of the pilot tunnel is used as the temporary lifting point 1, and two lifting points are set up. The lifting points are longitudinally and symmetrically arranged on both sides of the center line of the steel pipe column, and horizontally symmetrically arranged on both sides of the pilot tunnel centerline. The lifting rings are directly locked. On the main reinforcement of the initial support grid in the pilot hole, adjust the center of the steel pipe column 4 by adjusting the chain length of the electric hoist during hoisting, so that the steel pipe column coincides with the central axis of the vertical hole 3. The steel pipe column is hoisted downward by the gourd. During the hoisting process, the multi-line symmetrical hoist is used to adjust and limit the verticality. The hoisting method is convenient to set ...

Embodiment 2

[0045] For the hoisting construction of the steel pipe column by the hole pile method, the main reinforcement of the initial support grid of the pilot tunnel is used as a temporary lifting point, and a total of four lifting points are set. The lifting ring is directly stuck on the main reinforcement of the primary support grid of the pilot tunnel, and the center of the steel pipe column is adjusted by adjusting the chain length of the electric hoist during hoisting. The steel pipe columns are hoisted downward by electric hoists, and the columns are connected with high-strength bolts. After the hoisting is completed, a detachable I-shaped steel well frame 5 is used to limit the steel pipe column.

[0046] Preferably, the distribution structure of the I-shaped steel well-shaped frame is: two of the I-shaped steels tighten the initial support of the pilot hole under the premise of clamping the steel pipe column, and the other two are fixed on the above-mentioned two under the pre...

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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...

Claims

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Application Information

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IPC IPC(8): E02D29/045E04G21/14
Inventor 瞿国丽赵瑞文王湘华毛明林李阳耿开亮杨龙腾李伟简伟张亚磊何寿海姜晓明
Owner CHINA RAILWAY ERJU 1ST ENG
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