Method and system for measuring residual bearing capacity of structures based on deformation characteristics of tunnel lining

A technology of tunnel structure and measurement method, applied in the direction of applying stable tension/pressure to test material strength, measuring device, strength characteristics, etc., can solve problems such as unreasonable, waste, wrong disposal, etc., and achieve high fitting accuracy Effect

Active Publication Date: 2021-11-09
TONGJI UNIV +1
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Problems solved by technology

Practice has shown that formulating plans and countermeasures based on experience alone is not enough. The lack of a systematic and scientific diagnosis method for tunnel safety status may lead to unreasonable or even wrong disposal, resulting in unnecessary waste

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  • Method and system for measuring residual bearing capacity of structures based on deformation characteristics of tunnel lining
  • Method and system for measuring residual bearing capacity of structures based on deformation characteristics of tunnel lining
  • Method and system for measuring residual bearing capacity of structures based on deformation characteristics of tunnel lining

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0044] This embodiment provides a method for determining the residual bearing capacity of a structure based on the deformation characteristics of the tunnel lining, which is applicable to various highway tunnel sections built in IV-VI surrounding rock sections, including the following steps:

[0045] 1) According to the actual tunnel structure, the lining model is made by setting the similarity ratio, which includes geometry, strength, elastic modulus, strain, displacement, surface force, physical force, force, bending moment, formation resistance coefficient and reinforcement ratio s...

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Abstract

The invention relates to a method and system for measuring the residual bearing capacity of a structure based on the deformation characteristics of the tunnel lining. The method includes the following steps: 1) making a lining model with a set similarity ratio according to the actual tunnel structure; 2) making the lining model Carry out a loading test, record the structural deformation and corresponding load of the lining model; 3) obtain the corresponding structural deformation and corresponding load of the actual tunnel structure according to the similarity ratio, and obtain the deformation load function relationship of the actual tunnel structure by means of data fitting; 4 ) measurement to obtain the current convergent deformation of the actual tunnel structure, and measure the remaining bearing capacity of the actual tunnel structure based on the deformation load function relationship. Compared with the prior art, the present invention can quantitatively judge the residual bearing capacity of the structure according to the engineering monitoring data as the basis for structural safety evaluation, and at the same time, can reveal the stress damage characteristics and failure mode of the structure through the model test.

Description

technical field [0001] The invention relates to the technical field of tunnel safety monitoring, in particular to a method and system for measuring residual bearing capacity of structures based on deformation characteristics of tunnel lining. Background technique [0002] During the long-term operation of the tunnel structure, structural problems such as cracking and excessive deformation may occur, which will affect the performance of the tunnel. Especially under the condition of broken surrounding rock, the tunnel is prone to large deformation, which may damage the supporting structure, intrude into the building boundary, endanger the structure and traffic safety, and even lead to landslides in severe cases, causing serious consequences. In actual engineering, engineers generally combine the general characteristics of tunnel convergence deformation and the geology, climate, hydrology and other information of the tunnel location, and formulate treatment countermeasures and ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02G01N3/12
CPCG01N3/02G01N3/12
Inventor 刘学增丁爽桑运龙师刚
Owner TONGJI UNIV
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