带帽刚性桩复合地基复合桩土应力比的简化计算

SIMPLIFICATION CALCULATION OF COMPOSITE PILE-SOIL STRESS RATIO OF COMPOSITE FOUNDATION OF RIGID PILE WITH CAP

在文献[1]推导带帽刚性桩复合地基复合桩土应力比隐式计算公式的基础上,从分析带帽刚性桩复合地基沉降变形特征着手,不考虑复合桩体自身压缩变形量,对复合桩土应力比隐式公式进行简化,推导出带帽端承型桩和带帽摩擦型桩复合地基复合桩土应力比的显式公式,并得出带帽刚性桩复合地基按桩帽间土体模式的沉降计算公式,最后将计算结果与文献[1]进行对比,验证该简化方法的可行性和有效性。

Based on the documentation[1],the implicity calculation formula of composite pile-soil stress ratio was simplified by analyzing the deformation character of composite foundation of rigid pile with cap and taking no account of the compression deformation of composite pile,the explicit calculation formula also was deduced for the composite foundation of end bearing pile with cap and friction pile with cap,the settlement calculation formula was obtained according to the mode of soil besides pile cap for composite foundation of rigid pile with cap.At last,by comparing the calculation results with those form documentation[1],it was verified that the feasibility and effectivence of the calculation method.