车辆动载对高填边坡的动力响应分析

Analysis of the Dynamic Response of Vehicle Dynamic Loads to High-fill Slopes

以云南某高填边坡为对象,建立有限元模型,对不同车载、车速及车载作用位置下的边坡动力响应进行分析,研究车辆动载对高填边坡的影响。结果表明:车载、车速及车载作用位置三个影响因素中,车载对高填边坡的影响最大;车辆动载作用下,车载振源附近边坡位移最大;边坡最小稳定系数与车载呈线性递减型关系,而与车速及车载作用位置均呈指数递增型关系。

Taking a high fill slope in Yunnan province as the object,and a finite element model is set up to analyze the dynamic response of the slope under different vehicle dynamic loads,vehicle speeds and vehicle positions.The influence of vehicle dynamic load on high fill slope is studied.The result shows that among the three influencing factors of vehicle dynamic loads,vehicle speed and vehicle position,vehicle dynamic loads has the greatest influence on the high-fill slope;under the action of vehicle dynamic loading,the slope displacement near the vehicle vibration source is the greatest;the minimum stability coefficient of the slope has a linear decreasing relationship with the vehicle dynamic loads,but an exponential increasing relationship with the vehicle speed and the vehicle position.