摘要
单桩静载试验数值模拟的关键问题之一是确定各土层的计算参数。结合宁波某小区住宅楼基础工程,利用ANSYS,通过折减接触带土体弹性模量的方法模拟大荷载作用下桩土间的相对滑动;以ANSYS基于有限元的优化分析技术为P-s曲线反分析的工具,采用正反分析法确定土层计算参数。结果证明,该方法计算结果准确,计算效率较高。
Determining soil calculation parameters is one of key problems in numerical simulation of single pile static test. Combining with a domestic foundation project in Ningbo, the method that reducing soil elasticity modulus of contact region is adopted in order to simulate the sliding between pile and soil. Based on optimization tool of ANSYS software, P - s curves are made by back analysis method. The soil calculation parameters are detemainad by taking the positive and back analysis method. It is concluded that the result is accurate and the method is mere efficient than common ones.
出处
《施工技术》
CAS
北大核心
2009年第1期86-87,共2页
Construction Technology
基金
浙江省教育厅项目(20051621)
关键词
土层
参数
静载试验
数值模拟
优化
反分析
soil
parameter
static test
numerical simulation
optimization
back analysis
