沥青路面黏弹塑性变形分析  

A dissertation on numerical analysis of the visco-elasto-plastic deformation of the asphalt pavement

作　　者：张巍[1] 王贵君[2] ZHANG Wei WANG Gui - jun(Highway Survey and Design Office of Xingtai City, Xingtai, Hebei 054000, China School of Civil Engineering Hebei Univeristy of Technology,Tianjin 300401, China)

机构地区：[1]邢台市公路勘测设计处,河北邢台054000 [2]河北工业大学土木与交通学院,天津300401

出　　处：《黑龙江交通科技》2017年第5期1-2,5,共3页Communications Science and Technology Heilongjiang

摘　　要：在考虑沥青混凝土的黏弹塑性条件下,本构模型采用扩展的DRUKER-PRAGER蠕变模型和相关流动法则,选车轮荷载下剖面建立二维平面分析模型。利用有限元分析的方法,运用拟静态方法对路面进行加载,持荷时间相当于275万轴次交通量。对车辆荷载下沥青面层竖向和水平两个方向的蠕变应变进行计算分析,进而得出蠕变应变随深度和时间,以及不同面层组合厚度情况下的变化规律。In consideration of the asphalt concrete visco - elasto - plastic constitutive model under the condition of using DRUKER -PRAGER - creep model and the associated flow rule extension, choose the wheel load profile based on two - dimensional plane anal-ysis model. By using the method of finite element analysis, using pseudo static method for loading pavement, loading time is equiva-lent to 2,750,000 axle traffic volume. The creep strain under vehicle load asphalt surface layer of vertical and horizontal two directionsof analysis and calculation, and gets a conclusion that the change rule of creep strain with depth and time, and different surface com-posite layer thickness.

关 键 词：沥青路面 黏弹塑性 蠕变应变 

分 类 号：U416.217[交通运输工程—道路与铁道工程]