Study on seismic behavior and seismic design methods in transverse direction of shield tunnels
Study on seismic behavior and seismic design methods in transverse direction of shield tunnels
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DOI：
10.12989/sem.2001.11.6.651
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发表时间：
2001-06
影响因子：
2.2
通讯作者：
Chuan He;A. Koizumi
中科院分区：
文献类型：
--
作者：
Chuan He;A. Koizumi
为了研究盾构隧道横向的抗震性能和抗震设计方法，进行了一系列模型振动台试验，并对试验结果进行了二维有限元动力分析。提出了基于地下隧道复合有限元模型和梁-弹簧单元模型的两种静力分析方法，并通过模型振动台试验验证了静力分析的有效性。调查涉及的动力反应行为的隧道和地面，隧道和地面之间的相互作用，并评估不同的抗震设计方法。研究结果表明，盾构隧道在横向上的位移和动力特性与周围地层一致，本文提出的静力分析方法可直接作为盾构隧道横向抗震设计方法。
In order to investigate the seismic behavior and seismic design methods in the transverse direction of a shield tunnel, a series of model shaking table tests and a two-dimensional finite element dynamic analysis on the tests are carried out. Two kinds of static analytical methods based on ground-tunnel composite finite element model and beam-spring element model are proposed, and the validity of the static analyses is verified by model shaking table tests. The investigation concerns the dynamic response behavior of a tunnel and the ground, the interaction between the tunnel and ground, and an evaluation of different seismic design methods. Results of the investigation indicate that the shield tunnel follows the surrounding ground in displacement and dynamic characteristics in the transverse direction; also, the static analytical methods proposed by the authors can be used directly as the seismic design methods in the transverse direction of a shield tunnel.