Nonlinear Amplification of Seismic Ground Motion by Twin Cavities

Jian Wen Liang; Ming Liang Liu

doi:10.4028/www.scientific.net/AMM.438-439.1567

Paper Titles

Functional Reliability Analysis of Post-Earthquake Water Supply System
p.1551

Seismic Behavior Analysis of Spillway Weir Section Based on ANSYS
p.1555

Nonlinear Seismic Response Analysis of Canyons in Layered Sites
p.1559

Influence of Buried Depth on Seismic Responses of Water-Conveyance Tunnel Concrete Lining
p.1563

Nonlinear Amplification of Seismic Ground Motion by Twin Cavities
p.1567

Nonlinear Amplification of Seismic Ground Motion by Alluvial Valley
p.1572

Stochastic Dynamic Reliability Analysis of Seismic Response of Soft Ground Including Silt
p.1577

Dynamic Responses of Slope under the Effect of Seismic Loads
p.1587

Study on the Effect of Blocks on Seismic Performance of Improved Multi-Ribbed Slab Structure
p.1592

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 438-439Nonlinear Amplification of Seismic Ground Motion...

Nonlinear Amplification of Seismic Ground Motion by Twin Cavities

Abstract:

This paper presents nonlinear amplification of seismic ground motion by twin cavities in layered sites. The equivalent linear method is used in the dynamic analysis and Lysmer-Kuhlemeyer transmitting boundary is used at the left and right boundaries of the computation region. It is shown that, cavities have significant effect on seismic ground motion, and soil nonlinearity has significant effect on seismic ground motion around cavities. The PGAs in linear and nonlinear analysis may be increased by 24.4% and 19.2%, compared with those in the free-field response. The PGA in nonlinear analysis may be decreased by 44.6%, compared with that in the linear analysis.

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Periodical:

Applied Mechanics and Materials (Volumes 438-439)

Pages:

1567-1571

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.438-439.1567

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Online since:

October 2013

Authors:

Jian Wen Liang, Ming Liang Liu

Keywords:

FLUSH, Seismic Response, Soil Nonlinearity, Twin Cavities

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References

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