【摘要】 基于桩-土-承台的共同作用,分析了在外荷载作用下,桩土分担荷载的规律及疏桩基础的工作性状。在总结前人多种复合桩基设计方法的基础上,提出了一种按承载力和沉降双控制的复合桩基设计方法,包括承载力的验算、整体安全度分析及沉降量计算等。通过一个工程实例的分析,表明本文的设计方法是能满足工程需要的。更多还原

【Abstract】 Bases on pile-soil-cashion cap interaction ,the theory about sharing of load on piles and soil are analyzed. A new optimization design method is put forward with generalizing predecessors’ methods. The checking calculation of bearing capacity , analysis on the degree of integrality safety and the settlement calculation are included in this method .In the end ,a real project shown that the design method is able to meet the project requirement.更多还原