RESEARCH ON TIME-EFFECT OF SHAFT BEARING CAPACITY OF JACKED-IN SINGLE PILE IN SOFT SOIL BASED ON SEISMIC PIEZOCONE PENETRATION TESTS(SCPTU)
CAO Quan1，2，3，SHI Jianyong1，2，LEI Guohui1，2，AI Yingbo1，2，CHEN Hong3
(1. Geotechnical Research Institute，Hohai University，Nanjing，Jiangsu 210098，China；2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；3. Shenzhen Municipal Design and Research Institute Co.，Ltd.，Shenzhen，Guangdong 518029，China)
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.
曹 权1，2，3，施建勇1，2，雷国辉1，2，艾英钵1，2，陈 鸿3. 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[J]. 岩石力学与工程学报, 2011, 30(7): 1482-1487.
CAO Quan1，2，3，SHI Jianyong1，2，LEI Guohui1，2，AI Yingbo1，2，CHEN Hong3. RESEARCH ON TIME-EFFECT OF SHAFT BEARING CAPACITY OF JACKED-IN SINGLE PILE IN SOFT SOIL BASED ON SEISMIC PIEZOCONE PENETRATION TESTS(SCPTU). , 2011, 30(7): 1482-1487.
ROY M，TREMBLAY M，TAVENAS F，et al. Development of pore pressures in quasi-static penetration tests in sensitive clay[J]. Canadian Geotechnical Journal，1982，19(1)：124-138.
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2011, Vol. 30 
