高校地质学报2018，Vol.24Issue(1)：122-127,6.DOI:10.16108/j.issn1006-7493.2017063
边坡稳定性温度效应数值模拟研究
Numerical Simulation of the Influence of Temperature Field on Slope Stability
摘要
Abstract
As the climate change,the property of rock and soil changes accordingly with environmental temperature changes.In this paper,the influence of temperature field on the stability of the slope by some manifestation mechanism.The direct shear test of cohesive soil under different temperature conditions is carried out to explore the change law of cohesion and internal friction angle.Furthermore, combine ANSYS(finite element software)with the measured geothermal data to simulate the evolution temperature field of slope. According to the field of temperature, cohesion field is calculated which can find distribution of the safety factor by using optimized swedish method. Through a series of laboratory tests, it is found that the cohesive force of Xiashu is affected by temperature. Soil moisture content and density affect the soil showing thermal consolidation or thermal softening phenomenon. The evolution in temperature field of slope is simulated by ANSYS during the high temperature in summer of Nanjing suburb.The variation law of slope stability index is deduced.The results show that the slope stability is lower in summer hot temperature environment,and the safety factor of urban slope is lower.The heat island environment has a negative effect on the stability of slope.关键词
边坡/温度场/数值模拟/粘聚力/稳定性Key words
slope/temperature field/numerical simulation/cohesion/stability分类
天文与地球科学引用本文复制引用
朱晨光,刘春,施斌,汤强..边坡稳定性温度效应数值模拟研究[J].高校地质学报,2018,24(1):122-127,6.基金项目
国家自然科学基金项目(41230636 （）
41302216) （）
中国科协青年人才托举工程(2016QNRC001) （2016QNRC001）
苏州市科技计划项目(SYG201614) （SYG201614）
