Chapter
Mar 30, 2017
Effect of an Existing Tunnel Shape on Crossing Tunnels’ Interaction
Authors: R. Wang [email protected], C. W. W. Ng, Ph.D., F.ASCE [email protected], and T. Boonyarak, Ph.D. [email protected]Author Affiliations
Publication: Geotechnical Frontiers 2017
Abstract
Interaction of multiple tunnels has become more important in recent years due to an increase in number of tunnels constructed in urban areas. When investigating multi-tunnel interaction problems, previous studies mainly focused on circular tunnels. However, the influence of tunnel shape on crossing-tunnel interaction is still not fully understood. In this study, two sets of three-dimensional centrifuge tests were interpreted to investigate the interactions between perpendicularly crossing tunnels with different shapes of the existing tunnel (circular and horseshoe) in dry sand. To gain further insight into stress transfer in each test, three-dimensional numerical back-analyses were carried out using PLAXIS 3D. Unlike a conventional elastic-perfectly plastic soil model, the advanced hypoplasticity constitutive model with small-strain stiffness was adopted. Results from interaction tests of crossing tunnels are reported and discussed. The influence of tunnel shape on the multi-tunnel interaction is explained.
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© 2017 American Society of Civil Engineers.
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Published online: Mar 30, 2017
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Research Student, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. E-mail: [email protected]
Chair Professor, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. E-mail: [email protected]
Chief of Engineering Division, Seafco Public Company Limited, 144 Prayasuren Rd., Klongsamwah, Bangkok, Thailand. E-mail: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.