相邻下层土厚度对混凝土扩盘桩破坏状态分析

摘要

In this paper,the concrete plates-expanded pile will be set in soil layer with the various performance in the finite element analysis model established by ANSYS software. Under the vertical compression,through changing the thickness of adjacent soil layer under bearing plate, it is analyzed that failure behavior of soil surrounding the pile and the stress variety under compression of the concrete plates-expanded pile,deter-mine the thickness of adjacent soil layer under bearing plate affecting for the concrete plates-expanded pile. To further improve calculation model on compression bearing capacity of the concrete plates-expanded pile,and provide a reliable theoretical basis on design for this type of pile.%运用 ANSYS 软件建立有限元分析模型，将混凝土扩盘桩设置于不同性状土层中，在竖向压力作用下，通过改变承力盘盘下相邻粘土层的厚度，分析桩周土的破坏状态及混凝土扩盘桩抗压受力性能变化规律，确定承力盘盘下相邻粘土层的厚度对混凝土扩盘桩的影响，以进一步完善混凝土扩盘桩受压承载力计算模式，为该型桩设计提供可靠的理论依据。