单桩静载实验的有限元模拟分析  

Finite element simulating analysis of static test of single pile

作　　者：汪能君[1] 梧松[1] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《黑龙江科技学院学报》2007年第2期98-101,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：浙江省教育厅项目(20051621)

摘　　要：针对静载荷实验确定单桩极限承载力的局限性,采用有限元分析方法作为单桩极限承载力静载实验的有益补充。该方法采用Drucker-Prager模型确定土体本构关系,在桩土之间设置无厚度接触单元,作为桩土界面的处理方式。结合工程实例,利用ANSYS有限元分析工具,建立实体几何模型,进行桩基静载实验的数值模拟。结果表明,通过合理地设定计算参数,桩基静载实验p-s曲线实测值和计算值高度一致。分析结果对桩土模拟及设计有重要参考价值。In this paper, the vertical ultimate bearing capacity of single pile has been studied by using FEM as numerical method. Based on one example, the static test of single pile has been simulated by using ANSYS. Drucker-Prager model is used to simulate the constitutive relation of soils. The interaction of the pile and the foundation soils is simulated with zero thickness contact element. It is concluded that the method is precision. The analysis result will be of important reference value to pile and soil simulation and design in the future.

关 键 词：有限元 单桩极限承载力 静载实验 ANSYS DRUCKER-PRAGER模型 

分 类 号：TU473.1[建筑科学—结构工程]