Seismic Design and Analysis of Large-size Shield Tunnels. Part Ⅱ: Modified Stiffness Solution
According to the extensive application of shield tunnel, large-diameter shield tunnel in particular, a simplified seismic design method is in urgent need. The equivalent static method is more suitable for the rigid underground structure, rather than flexible structure such as large-diameter shield tunnel. In this paper, shield tunnels with different diameters and thicknesses are analyzed and calculated by timehistory method and free field deformation method. The calculation and analysis above help to identify the stiffness ratio to measure the relationship of structures stiffness and soils stiffness and the derivation of a revised stiffness solution based on the free field deformation method. The results indicate that this method can calculate seismic stress of shield tunnels with different diameters and thicknesses accurately.
Shield tunnel Seismic design method Time-history method Free field deformation method Stiffness revised
Li Yu Liu Zhi Yi Chen Yong Yuan
Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China Key Laboratory of
国际会议
上海
英文
1308-1312
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）