层状地基中混合桩型复合地基的分析方法
注意：本论文已在《岩土工程学报》, 2007, 29(3): 379-384发表
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梁发云1，陈龙珠2，李镜培1
（1.同济大学地下建筑与工程系，上海 200092；2.上海交通大学土木工程系，上海 200030）
摘要：在均质地基中混合桩型复合地基积分方程求解方法的基础上，引入弹性层状理论，推导出层状地基中混合桩型复合地基的积分方程解答，从而建立层状地基中混合桩型复合地基较为完整的理论分析体系。通过数值计算，可求得垫层作用下桩身各点处的轴力、剪力和位移等主要工程性状，并与典型算例进行对比，验证了本文方法和计算程序的正确性。最后还针对一个工程实例进行具体分析，说明本文方法能够适用于实际工程问题，具有工程应用前景。
关键词：层状地基；混合桩型；复合地基；传递矩阵；工程性状；参数分析
中图分类号：TU472 文献标识码：A 文章编号：1000–4548(2007)03–0379–06
Study on the behavior of composite foundation with hybrid piles in layered soils
LIANG Fa-yun1, CHEN Long-zhu2, LI Jing-pei1
（1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China）
Abstract:Based on the analysis of composite foundation with hybrid piles in homogeneous soil, the solutions of composite
foundation with hybrid piles in layered soil were deduced by introducing elastic layered medium theory, and then a relatively
complete theoretical system to analyze composite foundation with hybrid piles in layered soil was built up. Numerical method
was used to solve the integral equations, and the axial forces, shear forces and displacements along piles under the actions of
cushion were obtained. Comparison with classical elastic solutions verified the accuracy of the presented method and
calculating program. Finally, a practical engineering project was studied to illuminate the applicability of the presented method.
Key words :layered soil; hybrid pile; composite foundation; transfer matrix, working behavior; parametric analysis
作者简介：梁发云(1976– )，男，安徽省肥东县人，博士，讲师，主要从事桩基础、地基处理、岩土力学数值分析方
法等领域的科研与教学工作。
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