沥青路面重载作用下损伤数值分析

Numerical Analysis for Asphalt Pavement Damage Under Effect of Heavy Load Vehicles

针对当前我国沥青路面车辆超载的情况,对半刚性基层沥青路面结构在路表弯沉、结构应力、应变、使用寿命等方面进行数值计算与分析.结果表明,随着轴载的增加,弯沉增大轴载换算系数明显增加,车辆超载使累计标准轴次大大增加,路面使用寿命明显缩短,通过数值计算分析了车辆超载对沥青路面的静力损伤情况,为我国在重载交通条件下沥青路面的设计和沥青路面的早期破坏方面作指导.

Aiming at the condition of asphalt pavement,the pavement deflection,structural stress and strain and life of the semi-rigid structure are calculated under heavy loaded vehides.The resalts show that with the increase in axle load,the deflection increases axle load conversion,and the total of vehicle overloading standard axial times increase sharply,resulted in shorter life of the road.Through the analysis of the asphalt pavement under the effect of heavy vehicles,static damage mechanism is proposed to provide a guide for heavy traffic in the asphalt pavement design and the early damage of the asphalt pavement.