Pre-tensioning lining steel ring reinforcing matching device and method

A pre-tensioning and lining technology, used in measuring devices, shaft equipment, shaft linings, etc., can solve the problems of not being effectively in tension and the overall stress state of the inner lining steel ring is incomplete, so as to achieve a perfect stress system. , the effect of convenient operation

Pending Publication Date: 2022-06-17
SHANGHAI FOUND ENG GRP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

According to the conditions of the construction site, the steel braces cannot be effectively in tension after installation, and the overall stress state of the lining steel ring is incomplete. Now a process and supporting device are needed to complete the installation of the steel braces lining the steel ring. That is, it is in a state of tension, and then improves the stress state of the lining steel ring

Method used

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  • Pre-tensioning lining steel ring reinforcing matching device and method
  • Pre-tensioning lining steel ring reinforcing matching device and method

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Embodiment Construction

[0022] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] like figure 1 , 2, the present invention provides a pre-stretched lining steel ring reinforcement supporting device, including steel rod 1, connecting bolts 3, tightening nuts 2, tie rods 4 and 5 tension gauges. A bolt hole with a diameter of 2 cm is reserved on each steel tie bar 1, and the screw rod of the connecting bolt 3 can be fixed in the bolt hole of the steel tie bar 1; 4. Install the tension gauge 5 in the middle, and install the tightening nut 2 at the rear end of the straw 4. After the installation is completed, the tightening nut 2 is continuously tightened, and the pre-tension force is judged by the tension gauge 5. When the design value is reached, the tightening is stopped, and the welding is carried out through the reserved groove on the steel tie bar 1.

[0024] The using method of the embodiment of the present inve...

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Abstract

The invention relates to a pre-tensioning lining steel ring reinforcing matching device and method.The device comprises a steel brace, a connecting bolt, a fastening nut, tie rods and a tension meter, a welding groove is reserved in the connecting position of the two sections of the steel brace, the two sections of the steel brace are each connected with one tie rod through a threaded rod of the connecting bolt, and the tie rods are connected with the tension meter through a threaded rod of the fastening nut; a tension meter is arranged between the two pulling straws, and a fastening nut is arranged at the rear end of each pulling straw. The connecting bolts on the two sides are tied through the connecting rod, pretension force is applied through the fastening nuts on the two sides, the magnitude of the pretension force is observed through the tension meter, and connection is completed through welding after pretension is completed. The method is suitable for steel brace pre-tensioning construction in lining steel ring reinforcing construction.

Description

technical field [0001] The invention relates to a pre-stretched inner lining steel ring reinforcement process and a matching device, which are suitable for the steel inner lining construction of operating subway shield tunnels. Background technique [0002] With the increase of subway mileage and operation years in various cities, the convergence and deformation of subway shield tunnels continue to intensify. As the most effective technology to control the convergence and deformation of shield tunnels, lined steel rings have been widely used. [0003] As a structural member connecting the corbels on both sides, the steel bracing is in tension in the stress system of the inner lined steel ring. Now, according to the construction site conditions, the steel ties cannot be effectively in tension after the installation is completed, and the overall stress state of the lining steel ring is incomplete. Now a process and supporting devices are needed to complete the installation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18G01L5/00
CPCE21D11/18G01L5/0033
Inventor 赵文亮杨朋汲亮荀伟卓牛永波王如路朱妍衷兆程朱金彬
Owner SHANGHAI FOUND ENG GRP
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