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《Sichuan Building Science》 2013-01
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Analysis of ultimate pile capacity based on empirical parameters of soil

QIN Yanhua,XIE Zhihua,LUO Sihai(School of Architectural and Surveying & Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)  
Considered the different features of sand and clay,empirical formulations for pile shaft resistance and pile base resistance are derived.Pile shaft resistance and pile base resistance in clay are related with the undrained strength of soil,while in sand they are related with the effective overburden stress.Meanwhile,the stress release effect of large diameter pile is also considered.For one of examples,the relation of non-dimensional ultimate pile capacity and pile slenderness,pile diameter,friction angle and coefficient of clay is analyzed.For another example,the relation of non-dimensional ultimate pile capacity and pile slenderness,pile diameter,critical state friction angel and relative density of sand is analyzed.Finally a project case is carried out to verify the method proposed in the text.The newly proposed method can provide a basis in the estimation of ultimate capacity of pile in the preliminary design.
【Fund】: 江西省自然科学基金项目(2008GZC0031)
【CateGory Index】: TU473.1
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