摘要
利用ABAQUS软件建立旧水泥路面上加铺双绞合钢丝网沥青路面的三维动荷载模型,通过选取接缝处轮载中心正下方AC层底位置作为计算点位,以其最大剪应力和最大拉应力为计算指标,研究了双绞合钢丝网加铺层结构的动力响应,同时考虑我国重载情况较普遍,研究重载下加铺层层底应力的变化规律,结果表明:车辆荷载处于接缝正上方时,剪应力到达最大值;在车辆行驶的过程中,加铺层层底经历了拉压的应力交变过程;加铺层层底应力与轴载成线性增长趋势。
Using ABAQUS software,a three-dimensional dynamic load model of asphalt pavement with double twisted steel wire mesh was established on the old cement pavement.The dynamic response of double-stranded wire mesh overlay structure is studied by selecting the AC layer bottom position directly below the wheel load center at the joint as the calculation point and taking its maximum shear stress and maximum tensile stress as the calculation indexes.At the same time,considering that the situation of heavy load is common in China,the variation law of the bottom stress of overloading layer is studied.The results show that the shear stress reaches the maximum when the vehicle load is right above the joint.In the process of vehicle running,the layer underlay experiences the stress alternating process of tension and compression.There is a linear increase trend between the stress and axial load at the bottom layer.
作者
梁勇
秦仁杰
邱冬华
Liang Yong;Qin Renjie;Qiu Donghua(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410015,China)
出处
《山西建筑》
2021年第1期117-118,145,共3页
Shanxi Architecture
关键词
沥青加铺层
双绞合钢丝网
三维动载模型
重载
asphalt overlay
double stranded wire mesh
three-dimensional dynamic load model
overloading
