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Free Field Analysis of Liquefiable Soils
Yong-wei Chen College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China Xian-qun Liu Zhejiang Electric Power Design Institute, Hangzhou, China Hen-jun Dai Shen-Yuan Geotechnical Engineering Co., ltd., Shanghai, China
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ABSTRACT |
Liquefaction, seismic subsidence and lateral spreading should be considered when a sandy foundation in the seabed or maritime province sustains strong seismic load. Zhaohui Yang’s nested constitutive mode is incorporated into OpenSees to evaluate its capacity of simulating soil liquefaction. A simple method to get parameters is introduced and it shows good coincidence with the earthquake theory. Then an analysis of a sandy free field which is in the strong earthquake area is constructed. The results give out the liquefaction condition of the foundation and predict the seismic subsidence and lateral spreading, it would help us to do the foundation reinforcement treatment with such cases.
Keywords: liquefaction; new method; free field; OpenSees
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