层状土中桩体复合地基荷载沉降关系

Load-settlement relationship of pile-composite foundation in multi-layer ground

在假定桩侧摩阻力与该点位移符合纯弹塑模型的基础上,对层状土中桩体复合地基的工程特性进行了研究,分析了桩和桩间土的变形特点。最后,利用复合地基的变形协调条件,推导了层状土中桩体复合地基的荷载—沉降关系及桩土应力比公式,并结合工程实际对其精度进行了验证,表明荷载—沉降的理论关系式具有满足工程实际要求的精度。

On the supposition that frictional resistance around pile and the settlement of that point matches pure elastic-plastic model, the characteristics of pile-composite foundation in multi-layer ground are studied, and the deformation characteristics of pile and interpile soil are analyzed。In virtue of settlement compatibility, the load-settlement relationship and pile-soil stress ratio of pile-composite foundation in multi-layer ground are deduced. Contrast makes it clear that the precision of theoretical linear load-settlement relationship satisfies the demands of actually construction.