论文部分内容阅读
青藏高原是地震多发区,冻土区的公路、铁路在地震作用下的动力响应必须考虑.将冻土作为黏弹塑性材料,考虑冻土在动力荷载作用下的热力耦合效应,从热传导方程、渗流微分方程和动力平衡方程出发,建立了冻土的动力热-力耦合微分方程.根据相应的有限元列式,对路基在地震荷载作用下的动力响应进行了计算与分析.
The Qinghai-Tibet Plateau is a dynamic response of highways and railway in the earthquake-prone area and permafrost area under earthquake. Taking frozen soil as a visco-elastic plastic material and the thermodynamic coupling effect of permafrost under dynamic load, considering the heat conduction equation, Seepage differential equation and dynamic balance equation, the dynamic thermo-mechanical coupled differential equations of frozen soil are established. According to the corresponding finite element equations, the dynamic response of subgrade under earthquake load is calculated and analyzed.