路边坡疲劳稳定性分析及其数值计算——基于交通荷载作用

Fatigue stability analysis and numerical calculation of roadside slope——Based on traffic load

公路、铁路边坡在不规则动荷载反复作用下会产生疲劳损伤或疲劳破坏。基此,从疲劳分析理论入手,区分材料疲劳与结构疲劳的不同,将边坡视为结构物,结合边坡稳定性分析和边坡疲劳寿命分析方法,提出了边坡疲劳稳定性分析方法。该分析方法与一般的静力稳定性分析的区别在于对疲劳效应的考虑,引入了强度折减技术,建立了"岩土参数—安全系数—疲劳寿命"关系,使安全系数有了与之对应的疲劳寿命。

The road and railway slope under the action of irregular dynamic load will happen fatigue damage or fatigue failure. Based on the fatigue analysis theory,the difference between the material fatigue and structural fatigue,and regard the slope as the structure,combined with the slope stability analysis and the fatigue life analysis method,the slope stability analysis method is proposed. In order to make the evaluation of the long-term stability of the highway and the railway side slope and avoid all kinds of environmental vibration caused by the rock and soil disaster prevention and control,this method has certain theoretical significance and engineering application value.