摘要
对桩侧土及桩端土均采用线性荷载传递函数,同时,考虑桩周土所分担的荷载对单桩荷载传递规律的影响,利用力学理论及微分方程的近似解法—子域法,推出了刚性承台下变截面柔性单桩与地基相互作用的系列近似解析算式,并通过算例,将承台下变截面柔性桩的情况与同体积的等截面柔性桩的情况进行了对比。对比表明:改变桩型能提高柔性单桩及单桩承台的承载力。将模型试验结果与计算结果进行了比较,验证了解析算式的可行性。
Based on using linear load transfer function to pile-side soil and pile-end soil, and considering influence of sharing load of the pile-side soil on load transfer law of piles, and using theory of mechanics and approximate solution method—district method of differential equation,a set of approximate analytical formulas of interaction for a flexible single pile with variable cross section and ground soil are derived. For rigid pile cap, situation of flexible pile with variable cross-section are compared with situation of flexible pile with constant cross section by an example; the results show that the bearing capacity of the flexible pile and the composite foundation may be raised by changing pile type. The results of the model test are compared with the results. It is shown that the proposed method has good precision.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2003年第5期759-763,共5页
Rock and Soil Mechanics
基金
湖南省教育厅基金资助项目(No. 01B028)
关键词
刚性承台
变截面柔性桩
相互作用
rigid pile cap
flexible pile with variable cross section
interaction
