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本文从设计理论的角度出发,按桩身的刚度定性地将常见含桩类复合地基划分为柔性、中性和刚性桩三种复合地基及其常规设计方法要点。针对常规设计方法的缺点,作者在多年研究的基础上,提出了复合地基的力学模型;对柔性桩复合地基计算公式提出了改进意见;对中、刚性桩复合地基的设计方法提出了按沉降求解的基本思想,是复合地基设计理论的重要突破。为进一步精确系统地研究复合地基变形与受力计算提供了值得注意的基本框架。
From the point of view of design theory, this paper classifies the common composite foundations with piles into three types of composite foundations of flexible, neutral and rigid piles, and points of their conventional design methods qualitatively according to the stiffness of the pile body. In view of the shortcomings of conventional design methods, the author put forward the mechanical model of composite foundation on the basis of years of research. Suggestions for improving the calculation formula of flexible pile composite foundation are proposed. The design method for composite foundation with medium and rigid piles is proposed according to settlement. The basic idea is an important breakthrough in the theory of composite foundation design. For the further accurate and systematic study of composite foundation deformation and force calculation provides a noteworthy basic framework.