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建筑物的地基可能会遇到各种各样的土层,当在软土地基上进行建筑时,为了满足建筑物的承载要求,必须对软土地基进行适当的加固处理,而高压旋喷桩就是地基加固处理的一种方法。通过三维有限元的数值分析方法,采用Buyukozturk Concrete模型模拟水泥和水泥土的非线性,用基于塑性的Drucker-Prager模型模拟土的非线性,建立了高压旋喷桩的桩—土—结构相互作用体系的三维有限元模型,研究了桩—土耦合作用的相互非线性效应,通过接触分析计算了高压旋喷桩基础在地震载荷作用下的上部钢结构响应以及桩腿的内力分布,为复杂结构物的计算提供了一种新的计算方法。
The foundation of the building may encounter various kinds of soil layers. When building on the soft soil foundation, in order to meet the bearing requirements of the building, the soft soil foundation must be properly reinforced, while the high-pressure rotary grouting pile Is a way to reinforce the foundation. Through the numerical analysis method of three-dimensional finite element method, Buyukozturk Concrete model is used to simulate the nonlinearity of cement and cemented soil. The nonlinearity of soil is simulated by plastic-based Drucker-Prager model. The pile-soil-structure interaction The three-dimensional finite element model is used to study the mutual nonlinear effect of pile-soil coupling. The upper steel structure response and the internal force distribution of high-pressure grouting pile foundation subjected to earthquake load are calculated by contact analysis. The computation of objects provides a new method of computation.