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A deep foundation pit steel pipe internal support prestressing device

A deep foundation pit steel pipe and application device technology, applied in infrastructure engineering, construction, excavation, etc., can solve the problems of large material consumption, cumbersome procedures, difficult disassembly, etc., and achieve the effect of less material consumption, easy manufacturing, and easy dismantling.

Active Publication Date: 2022-01-14
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of installing the prestressing device on the construction site is cumbersome and can only be welded on site. The precision is low, and it cannot be adjusted after one-time installation. It is difficult to disassemble, consumes a lot of materials, and costs a lot.

Method used

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  • A deep foundation pit steel pipe internal support prestressing device
  • A deep foundation pit steel pipe internal support prestressing device
  • A deep foundation pit steel pipe internal support prestressing device

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with embodiment.

[0017] A deep foundation pit steel pipe internal support prestressing device of the present invention is characterized in that the device includes a steel pipe 1, a sleeve 2, an annular steel plate 3, a bolt 4, a flange 7, and a steel plate 8, and the steel pipe 1 The inner ring of one end is welded to the sleeve 2, and the other end is connected to the flange 7; the annular steel plate 3 is welded to the steel pipe 1 and the sleeve 2; the annular steel plate 3 and the outer wall of the steel pipe 1 are welded to the rib 11; U-shaped sleeve 6 is welded on 8; ribs 11 are welded on the outer wall of the steel plate 8 and U-shaped sleeve 6; the ribs 11 are drilled with fixing holes 9; The bolts 4 are connected; the bolts 4 are welded with a cross nut 5; the cross nut 5 is drilled with a fixing hole 9; the fixing hole 9 is connected through a steel wire rope 10.

[0018] The steel trim ...

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Abstract

The invention discloses a deep foundation pit steel pipe internal support prestress applying device. By designing the bolt sleeve type support device, compared with the steel welding reinforcement method, the axial force is more uniform, and the device is detachable and convenient for assembly and transportation. The bolt-type struts are inserted into the sleeve group arrangement, and the prestress can be gradually applied to the design value by using the jack multiple times at different points in time. Corresponding to different support force requirements, use the corresponding steel pipe, and formulate the bolt diameter and length, the number of sleeves, the number of ribs, etc. through calculation, and the design prestress application requirements can be achieved when using the corresponding torque. The device has strong practicability, safety and reliability, simple construction, easy installation and dismantling, high efficiency and less material consumption.

Description

technical field [0001] The invention relates to a device for applying prestress to steel pipe enclosures of deep foundation pits in building construction, and belongs to the technical field of building construction, in particular to a device for applying prestress to internal support of steel pipes in deep foundation pits. Background technique [0002] At present, the deep foundation pit construction of buildings in my country generally adopts the method of foundation pit enclosure and internal support, and the internal support usually adopts concrete support or steel pipe support. Steel pipe supports usually apply prestress to the foundation pit enclosure to offset the displacement of the surrounding soil after part of the foundation pit excavation. The steel pipe support is transported to the construction site in sections, and the sections are usually connected by flanges. [0003] The prestressing device is usually fixed with wedges or pads, and the prestress is applied ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04E02D2250/0046
Inventor 王恒张晓波
Owner CHINA MCC17 GRP
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