基于波速孔压静力触探试验研究软土中单桩桩侧承载力时效性

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Abstract According to the characteristics of installation about the seismic piezocone penetration tests(SCPTU) penetrometer and the pile，a theoretical relationship between time-effect of shaft bearing capacity of single pile and the data measured from SCPTU is developed，which can be used to predict the variation of shaft bearing capacity of a jacked-in pile with time in saturated soft clay. Different from the traditional way，the effect of different stiffness index and consolidation coefficient on the consolidation process in varied clays and highly stratified deposits are considered in the new theoretical solution. Besides，the ration of the solution is verified by the single pile loading tests in different time period after installation.

Key words： pile foundations seismic piezocone penetration tests(SCPTU) jacked-in pile saturated soft clay time-effect of shaft bearing capacity of single pile

Received: 30 December 2010

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http://www.rockmech.org/EN/Y2011/V30/I7/1482

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