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398/ I-10†
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1988”N
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10ŒŽ
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JOURNAL OF STRUCTURAL MECHANICS AND EARTHQUAKE ENGINEERING
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An evaluation method of longitudinal stiffness of shield tunnel linings for application to seismic response analysesD
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This paper presents a practical method to evaluate the longitudinal stiffness of shield tunnel linings which is of great importance in the seismic response analysis of shield tunnels. Linings of shield tunnels are constructed assembling a number of segments and joints, and have structural discontinuity in the longitudinal direction. In this paper, relationships between stress and deformation of segments-joints system, both for axial force and for bending moment, are formulated into the form of "equivalent stiffness", i.e., the stiffness of uniform beam having the same stress-deformation relation as that of segments-joints system. Modeling the lining into a uniform beam with the equivalent stiffness, it ma
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shield tunnel, longitudinal stiffness, seismic response analysis
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