旧水泥混凝土路面错台对沥青加铺层受力的影响研究  

Old Cement Concrete Pavement Faulting Influence on Asphalt Overlay Stressing

作　　者：唐鹰飞 陆佳颖[2] 王文达[2] 

机构地区：[1]苏州市建设工程质量监督站,江苏苏州215000 [2]东南大学交通学院,江苏南京210096

出　　处：《交通标准化》2010年第9期104-107,共4页Communications Standardization

摘　　要：利用有限元软件ANSYS建立考虑错台的路面结构有限元模型,分析在标准轴载下,不同荷载位置、沥青加铺层厚度和错台高度对沥青加铺层中最大剪应力的影响。计算结果表明:错台条件下,最不利荷位为荷载刚好完全作用在错台高板一侧;在对称加载时,沥青加铺层中也会出现较严重的剪应力集中现象;随错台高度的增加,最大剪应力显著增大;增大加铺层厚度可降低沥青混凝土开裂几率和延缓裂缝的向上反射。Finite element software ANSYS is used to establish pavement structure finite element model with the consideration of faulting to analyze the influence of different load position,asphalt overlay thickness,faulting height on the maximum shear stress in asphalt overlay under the standard axel load.The calculation results show that the unfavorable load position is on one side of high slab of faulting,there is serious shear stress concentration in asphalt overlay under symmetrical load.What＇s more,the higher the faulting height is,the bigger the maximum shear stress.The thick overlay can decrease the possibility of asphalt concrete crack and delay the upward reflection of crack.

关 键 词：复合式路面 错台 有限元 剪应力 

分 类 号：U416.216[交通运输工程—道路与铁道工程]