Imperfect bonding effect on dynamic response of a non-circular lined tunnel subjected to shear waves |
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| Affiliation: | 1. Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;2. School of Foundation, Hebei Institute of Architecture and Civil Engineering, Zhangjiakou 075000, China;1. Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran;2. School of Civil Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran;3. School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran;4. Department of Civil Engineering, National Central University, Taoyuan, Chungli, Taiwan;1. Department of Civil Engineering, Zanjan Branch, Islamic Azad University, Zanjan, Iran;2. Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;1. College of Civil Engineering, Hunan University, Changsha, Hunan 410082, PR China;2. Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI 49931, USA;3. Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089-2531, USA;1. Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, PR China;2. Institute for Infrastructure Engineering, University of Western Sydney, NSW 2751, Australia;1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;2. University of Chinese Academy of Science, Beijing 100049, China |
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| Abstract: | Combining the wave function expansion method and conformal transformation method, the dynamic stress around a non-circular tunnel with imperfect interface subjected to anti-plane shear waves is derived. The non-circular tunnel is mapped into an annular region, and the analytic solutions of stress and displacement solutions are expanded in terms of wave functions. By introducing the spring-type interface model, the coefficients are determined by satisfying the imperfect bonding conditions around the concrete lining. The distribution of tangential stresses on the imperfect interface is graphically illustrated, and the interacting effect of imperfect interface and incident wavelength is discussed in detail. The imperfect interface is revealed as a key factor dominating the seismic responses of a tunnel. |
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| Keywords: | Non-circular lined tunnel Imperfect interface Dynamic response Conformal transformation method |
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