A method for assessing the safety status of subway shield tunnel structures
A technology for safety status assessment and tunnel structure, which is applied in tunnels, tunnel linings, underground chambers, etc.
Inactive Publication Date: 2017-12-26
TONGJI UNIV
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Problems solved by technology
[0003] The disease status of the tunnel structure can be obtained through the disease investigation, but there is no clear classification standard for the disease level at present, and it is impossible to determine the safety status of the tunnel structure based on the existing data, especially for the specific structural form and disease characteristics of the shield tunneling method
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Embodiment 1
[0055] Table 8 Example 1 Shield Tunnel Structural Evaluation Items and Section Safety Evaluation of a Section Uplink Shield Tunnel
[0056]
[0057]
[0058]
[0059] Table 9 Overall safety assessment of the shield tunnel structure on the uplink line in a certain section of Example 1
[0060]
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The invention relates to a safety state evaluation method for a subway shield tunnel structure. The method comprises the following steps of (1) determining safety state evaluation items for the subway shield tunnel structure; (2) respectively classifying all evaluation items according to disease features and damage degree of the subway shield tunnel structure; (3) classifying a segmental safety state of the subway shield tunnel structure; (4) classifying and evaluating the safety state of the whole tunnel structure according to the result obtained in the step (3). Compared with the prior art, the method disclosed by the invention has the advantages that the structural safety state can be simply and conveniently judged according to actual disease conditions by means of reasonably classifying the safety state of the subway shield tunnel structure, so that a basis and a guarantee are provided for timely and opportunely adopting reasonable maintenance measures.
Description
technical field [0001] The invention belongs to the field of tunnel structure engineering, and in particular relates to a method for assessing the safety state of a subway shield tunnel structure. Background technique [0002] With the continuous development of urban construction, the development direction of urban transportation is gradually shifting to underground space, and more and more subway shield tunnels are being constructed. The structural problems of subway shield tunnels in service are becoming more and more serious, such as tunnel water leakage, segment cracks, platform misalignment, longitudinal uneven settlement, and excessive lateral deformation. Threats to security operations. [0003] The disease status of the tunnel structure can be obtained through the disease investigation, but there is still no clear classification standard for the disease level, and it is impossible to determine the safety status of the tunnel structure based on the existing data, esp...
Claims
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IPC IPC(8): E21D11/00E21D11/38G06F17/50
CPCE21D11/00E21D11/38G06F30/13
Inventor 周顺华肖军华季昌狄宏规何超陈翰司金标
Owner TONGJI UNIV