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及桩型对桩基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,推导出了柔性群桩承台下变截面角桩与地基相互作用的近似的解析算式,并通过算例将等截面桩桩侧摩阻力和桩身轴力与变截面桩桩侧摩阻力和桩身轴力作了对比,表明改变桩型能提高桩侧摩阻力。为验证本文方法的可行性,将模型试验结果与本文计算结果进行了比较,表明本文方法有较好的精度。
Based on linear load deliver function to pileside soil and pileend soil, and considering the influence of sharing load of the pileside soil and pile type on load deliver law of piles, using mechanics theory and approximate solution methoddistrict method of differential equation,the approximate analytical formulas of interaction for the corner pile with variable cross section and soil are derived under flexible grouped piles cap. The friction force and the axial force of pile with constant cross section are contrast with the friction force and the axial force of pile with variable cross section by a example, the contrast indicates that the friction force of pileside may be raised by changing pile type. In order to verify the reliability of the proposed method, the results of the model test are compared with the results in this paper. It's showing that the proposed method has good precision.
出处
《水文地质工程地质》
CAS
CSCD
2003年第1期13-17,共5页
Hydrogeology & Engineering Geology
基金
湖南省教育厅基金资助项目(01C347)
