摘要
针对桩基设计理论中群桩基础沉降计算这一难题,提出了一种群桩沉降的计算方法.该方法以荷载传递法计算自身桩顶荷载作用下的沉降,根据剪切位移理论考虑群桩之间的相互影响,对群桩位移影响系数进行了修正,进而求得了邻桩桩顶荷载作用下对其产生的沉降,在考虑各桩的存在引起位移折减后将其迭加,得出了一种群桩沉降的计算方法.通过与已有模型桩基试验结果进行对比,结果表明:理论计算值与实测值吻合较好.
Aiming at the difficult problem of settlement of group piles in design of pile foundation, an approach to the calculation of group pile settlement is presented. This approach calculates the settlement based on the load transfer method under itself working load of pile top, according to the shear displacement theory and taking into account the interaction of group piles, it modifies the displacement-influence factor,then the settlement under adjacent pile working load on the top is calculgted,a calculation of the group pile settlement by considering the reduction effect caused by the existence of piles is obtained. Through comparison with those measured from the model test of piles foundations, the results indicate the theory calculations coincide with test results.
出处
《华北水利水电学院学报》
2007年第6期56-59,共4页
North China Institute of Water Conservancy and Hydroelectric Power
基金
2005年度河南省高等学校创新人才培养工程项目
2005年度河南省高校杰出科研人才创新工程项目(HAIPURT)(2005KYCX015)
关键词
群桩基础
沉降计算
荷载传递法
剪切位移理论
位移影响系数
pile foundation
settlement calculation
load transfer method
shear displacement theory
displacement-influence factor
