防灾减灾工程学报2017，Vol.37Issue(4)：546-550,564,6.DOI:10.13409/j.cnki.jdpme.2017.04.006
温度循环下桩土界面特性及桩侧摩阻力数值模拟
Friction Characteristics of Pile-soil Interface under Temperature Cycles and Numerical Simulation of Shaft Resistance
摘要
Abstract
The relationship between the shear strength of interface and the times of cycles is analyzed by the improved labotatory experiment,The friction coefficient of the pile and soil interface changes with the temperature cycle,and the variety of average shaft resisitance of temperature cycle is studied by numerical calculation model.It is found that the shear strength of interface decreases with the increase of the times of cycles after several times of temperature cycles,and the greater the normal stress is,the more loss of shear strength is after the temperature cycle.During the process of temperature rising,the friction coefficient of the pile and soil interface decreases and the average shaft resistance decreases.During the process of temperature declining,the friction coefficient of the interface increases while the average shaft resistance increases.After several times of temperature cycles,the friction coefficient of the pile and soil interface remained basically unchanged,and the average shaft resistance of the pile-soil interface became more and more stable during the heating and cooling process.关键词
能量桩/桩土界面特性/温度循环/侧摩阻力Key words
energy pile/characteristics of pile-soil interface/temperature cycle/shaft resistance分类
建筑与水利引用本文复制引用
赵刚,李驰,斯日古楞..温度循环下桩土界面特性及桩侧摩阻力数值模拟[J].防灾减灾工程学报,2017,37(4):546-550,564,6.基金项目
国家自然科学基金项目(51269012)资助 （51269012）
