结合工程实践，在阐述刚性桩复合地基受力机理的基础上，对其设计中桩型的选择及其 与柔性桩复合地基的综合应用、承载力与变形的计算、桩土应力比与复合地基承载力的关系以及逆作法 施工桩基在复合地基施工中的应用等问题作了探讨。 Combined with engineering practice, based on the stress mechanism of rigid pile composite foundation, the selection of pile type in the design and its comprehensive application with flexible pile composite foundation, calculation of bearing capacity and deformation, stress ratio between pile and soil and composite foundation Bearing capacity and the application of pile foundation in the construction of composite foundation by the reverse working method.