褥垫层厚度、模量变化对复合地基应力场影响的数值模拟研究

Numerical Simulating Investigation on Stress Field of Composite Foundation by Changing Thickness and Modulus of Cushion

褥垫层是刚性桩和半刚性桩复合地基的核心技术之一。为探求褥垫层厚度、模量变化对复合地基应力场产生的影响,利用大型通用有限元程序ANSYS,进行了不同褥垫层厚度、模量的复合地基数值模拟研究,获得了褥垫层厚度、模量变化对复合地基桩土应力比、桩身应力、土体应力等产生的影响,为复合地基的工程设计提供了数据支持。

Cushion is a core part in the rigid and semi-rigid composite foundation. Composite foun dation of difference cushion thickness and modulus are studied by ANSYS to research stress field of composite foundation. The numerical simulation reveals the affection of pile-soil ratio, stress of pile and stress of soil by changing thickness and modulus of cushion providing necessary data support for engineering design.