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A positioning device and manufacturing method for a steel pipe column in a cover-and-excavation method

A technology of positioning device and steel pipe column, which is applied in construction, infrastructure engineering, sheet pile wall and other directions, can solve the problems of many processes and high cost, and achieve the effect of solving many processes, high safety and shortening the construction period.

Active Publication Date: 2019-09-03
CHINA RAILWAY NO 2 ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of long construction period due to many procedures and high construction cost caused by the difficulty of pulling out the steel casing when adopting the positioning method of the steel casing retaining wall in the steel pipe column positioning construction of the cover-and-excavation method. A steel pipe column positioning device and a manufacturing method of the cover-excavation method. After installing the positioning device on the steel pipe column, there is no need to use a steel casing to protect the wall, no need to pump and drain mud before installing the positioner, and no need to manually carry out underground deep holes Remove the pile head, effectively solving the problem of many procedures and high cost of the traditional steel pipe column positioning method

Method used

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  • A positioning device and manufacturing method for a steel pipe column in a cover-and-excavation method
  • A positioning device and manufacturing method for a steel pipe column in a cover-and-excavation method
  • A positioning device and manufacturing method for a steel pipe column in a cover-and-excavation method

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Effect test

Embodiment 1

[0037] The invention provides a positioning device for a steel pipe column by a cover digging reverse method;

[0038] Such as Figure 1-Figure 5 As shown, the steel pipe column positioning device of the cover-excavation method in this embodiment includes a transmission device 1, a brake device 2 and a support device 3; the support device 3 includes a support plate 31 and a bearing 32, and the outer ring of the bearing 32 Welded with the support plate 31; the transmission device 1 includes two threaded sleeves 11, which are coaxially arranged at intervals and connected through a sleeve 12 arranged outside the threaded sleeves 11, and a screw rod is arranged inside the threaded sleeves 11 13. One end of the screw 13 extends radially along the steel pipe column 4 into the steel pipe column 4, and the other end is welded to the inner ring of the bearing 32; the brake device 2 includes two brake rods 21 and three brake plates 22, The brake plate 22 is sheathed outside the sleeve ...

Embodiment 2

[0046] The invention provides a method for manufacturing a steel pipe column positioning device with a cover-and-excavation method, which includes the following steps:

[0047] a. Assemble the transmission device: After connecting the two sections of threaded sleeves 11 by welding the casing 12, screw the screw 13 into the threaded sleeve 11;

[0048] b. Assemble the support device: weld the outer ring of the bearing 32 to the center of the support plate 31, and weld the inner ring of the bearing 32 to the screw 13;

[0049] c. Assemble the brake device: put three brake plates 22 at intervals outside the casing 12 and weld them, pass the brake lever 21 through the brake plates 22 and weld them to the support plate 31;

[0050] d. Confirm the installation position: After the anti-floating calculation of the steel pipe column, determine the installation position of the steel pipe column positioning device, and mark the center point of the positioning device installation position...

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Abstract

The invention relates to the field of underground engineering construction and particularly relates to a topdown steel pipe column positioning device and a manufacturing method thereof. The topdown steel pipe column positioning device comprises a transmission device and a support device, wherein the support device comprises a support plate and a bearing; a bearing outer ring is fixedly connected with the plate surface of the support plate; the transmission device comprises a thread bushing fixedly connected with a steel pipe column; a screw rod is arranged in the thread bushing; one end of the screw rod extends into the steel pipe column along the radial direction of the steel pipe column; the other end of the screw rod is fixedly connected with a bearing inner ring. Through the topdown steel pipe column positioning device, a worker enters the steel pipe column and rotates the screw rod, then the support plate is driven to move and is supported on the wall of a tensile pile hole to provide counter force, so that the perpendicularity of the steel pipe column is adjusted; the problems of multiple processes and high cost of a steel casing pipe protection wall positioning method in the prior art are effectively solved.

Description

technical field [0001] The invention relates to the field of underground engineering construction, in particular to a steel pipe column positioning device and a manufacturing method of a cover-and-excavation method. Background technique [0002] The cover-excavation reverse method is to excavate the ground down to a certain depth, then close the top, and the rest of the lower part of the construction is carried out under the closed roof, that is, excavate layer by layer from top to bottom and build the main structure to the bottom. Usually, the enclosure structure and intermediate piles of the foundation pit are first made on the ground surface. The enclosure structure of the foundation pit mostly adopts underground diaphragm walls or curtain piles, and the intermediate support mostly uses the intermediate columns of the main structure itself to reduce the construction cost. Then the surface soil can be excavated to the ground level of the roof of the main structure, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D13/00
Inventor 谭永斌李志宏陈强陈卓
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD