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JOINT INTERACTION MODELS FOR SHIELD TUNNEL SEGMENT REINFORCED BY SECONDARY LININGS
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Abstract The principle and results of load test on double-layer linging joint are discussed simply. Based on the above results，three joint interaction models are proposed according to the different structural forms of joint between the primary and the secondary linings. The linging fracture created by tensile force is simulated，and the calculational result is compared with the test data. It is shown that reducing the stiffness of lining in the case of occurrence of fracture is reasonable，and the model result is in good accordance with the test data.
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Received: 11 May 2001
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YAN Qingming1, 2, 3, CUI Lan1, 2, SHENG Qian1, 2, ZHENG Junjie4, ZHU Zeqi1, 2, TANG Xiongjun5. Calculation method and applicability of surrounding rock pressure of shallow-buried rocky shield tunnel#br#[J]. , 2025, 44(S2): 240-257. |
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