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《Rock and Soil Mechanics》 2011-07
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Study of force characteristics of battered pile foundation

WANG Yun-Gang1,2,ZHANG Guang1,HU Qi3(1.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;2.City College Zhejiang University,Hangzhou 310015,China;3.College of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China)  
Due to the carrying capacity of horizontal load,battered piles were generally used in the foundations of bridge,wharf and transmission power line.The horizontal and vertical load sharing of piles is not only force decomposition,which is related with the axial and lateral stiffness of inclined and vertical piles.The influence of axial and lateral stiffnesses coupling should be considered in the analysis of inclined group piles foundation.According to the studies of the axial and lateral stiffness of inclined and vertical piles and the analysis of load sharing of group piles,the force characteristics of battered pile foundation were gained.First,the lateral stiffness of positive inclined pile is biggest;and the lateral stiffness of vertical pile is bigger than that of negative inclined pile.Second,the influence of pile length on the axial stiffness is very significant.When the pile was lengthened,the axial stiffness was increased;and the differences between axial stiffness and lateral stiffness were expanded.Last,most of the vertical load was borne by the axial force of piles.When the ratio of axial stiffness and lateral stiffness is small,most of the horizontal load was borne by the lateral force of piles.When the ratio of axial stiffness and lateral stiffness is large,most of the horizontal load was borne by the axial force of piles.At the same time,due to the inclined angle of pile is small,the large axial force is created to resist horizontal load.
【Fund】: 博士后科研基金资助项目(No.20080441232)
【CateGory Index】: TU473.1
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