摘要
为缓解乌鲁木齐市城市道路裂缝病害问题,选取典型城市道路复合式基层沥青路面结构进行研究,分析不同行车荷载作用下沥青路面的动力学响应。利用ABAQUS软件建立三维有限元模型,考虑水平荷载的作用,施加半正弦荷载,进行动态模拟计算,并对各项力学响应设计指标进行分析。结果表明:车速对路表弯沉影响较大;沥青稳定碎石层拉应力对面层厚度敏感性较高,随着面层厚度的增加,路表弯沉、沥青面层剪应力和基层层底拉应力峰值减少,沥青稳定碎石层拉应力峰值逐渐增大。因此,建议沥青面层厚度在12~16 cm。
In order to alleviatethe problem of urban road cracks in Urumqi,the composite base asphalt pavement structure of typical urban roads was selected for research,and the dynamic response of asphalt pavement under different traffic loads was analyzed.Using ABAQUS software to establish a three-dimensional finite element model,considering the effect of horizontal load,applying half-sine load,carrying out dynamic simulation calculation,and analyzing various mechanical response design indicators.The results show that the vehicle speed has a great influence on the deflection of the road surface;the tensile stress of the asphalt stabilized gravel layer is highly sensitive to the thickness of the surface layer.The peak value of tensile stress decreased,and the peak value of tensile stress of asphalt stabilized macadam layer gradually increased.It is recommended that the thickness of the asphalt surface layer be between 12 and 16 cm.
作者
刘溪溪
谢海巍
刘尊青
潘福元
LIU Xixi;XIE Haiwei;LIU Zunqing;PAN Fuyuan(Xinjiang Agricultural University,Urumqi,Xinjiang 830052,China;Xinjiang Road Engineering Test and Research Center,Urumqi,Xinjiang 830052,China)
出处
《公路工程》
2023年第4期78-83,共6页
Highway Engineering
基金
新疆维吾尔自治区自然科学基金(2019D01B22)。
