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A Study on Seismic Isolation of Shield Tunnel Using Quasi-Static Finite Element Method
Joint Authors
Chen, W.
Li, Can
Zhao, Wusheng
Suzuki, Takeyasu
Shishikura, Yoshihiro
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-02
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Using a quasi-static method based on an axisymmetric finite element model for seismic response analysis of seismically isolated tunnels, the seismic isolation effect of the isolation layer is studied, and the seismic isolation mechanism of the isolation layer is clarified.
The results show that, along the longitudinal direction of the tunnel, the seismic isolation effect is mainly affected by the shear modulus of the isolation material.
The smaller the shear modulus is, the more evident the seismic isolation effect is.
This is due to the tunnel being isolated from deformation of its peripheral ground through shear deformation of the isolation layer.
However, along the transverse direction of the tunnel, the seismic isolation effect is mainly affected by the shear modulus and Poisson’s ratio of the isolation material.
When Poisson’s ratio is close to 0.5, a seismic isolation effect is not evident because the tunnel cannot be isolated from deformation of its peripheral ground through compression deformation of the isolation layer.
Finally, a seismic isolation system comprising a shield tunnel in which flexible segments are arranged at both ends of an isolation layer is proposed, and it is proved that the seismic isolation system has significant seismic isolation effects both on the longitudinal direction and on the transverse direction.
American Psychological Association (APA)
Li, Can& Chen, W.& Zhao, Wusheng& Suzuki, Takeyasu& Shishikura, Yoshihiro. 2019. A Study on Seismic Isolation of Shield Tunnel Using Quasi-Static Finite Element Method. Shock and Vibration،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211397
Modern Language Association (MLA)
Li, Can…[et al.]. A Study on Seismic Isolation of Shield Tunnel Using Quasi-Static Finite Element Method. Shock and Vibration No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1211397
American Medical Association (AMA)
Li, Can& Chen, W.& Zhao, Wusheng& Suzuki, Takeyasu& Shishikura, Yoshihiro. A Study on Seismic Isolation of Shield Tunnel Using Quasi-Static Finite Element Method. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211397
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211397