钢桥面铺装车辙预估有限元分析  

Analysis on Rut Prediction of the Steel Bridge Deck Pavement by Finite Element Method

作　　者：马雪城 李国芬[1] 赵康[1] MA Xuecheng;LI Guofen;ZHAO Kang(School of Civil Engineering,Nanjing Forestry University,Nanjing 210037;Road ＆ Bridge International Co.Ltd.,Beijing 100027)

机构地区：[1]南京林业大学土木工程学院,南京210037 [2]中交路桥建设有限公司,北京100027

出　　处：《森林工程》2018年第5期78-83,共6页Forest Engineering

基　　金：住房和城乡建设部科技项目(2012-K4-21);江苏交通科技项目(2010Y34);中国交通运输部部省联合攻关(2010-353-332-100)

摘　　要：为得到荷位、轴载、大气温度以及计算方法各因素对钢桥面铺装车辙的影响,本文以上层高弹改性沥青混合料(35 mm)+下层浇筑式沥青混合料(40 mm)复合铺装结构为研究对象,并建立钢桥面铺装模型,通过单轴贯入试验获取材料的蠕变参数,利用ABAQUS计算钢桥面铺装车辙。分析表明:车辙主要发生在下层的浇筑式沥青混合料;横向荷位变化对车辙的影响远大于纵向荷位;车辙值总体与温度呈正相关性,与季节的温度变化相一致;连续变温下铺装车辙的计算方法比恒温下的要准确,车辙深度随着接地压力的增加而不断增大。研究结论对钢桥面铺装设计和车辙预估有一定的意义。In order to get the influence of load location, axle load, atmospheric temperature and calculation method on rutting of steel bridge deck pavement. The composite pavement structure of high elastic modified asphalt mixture （35mm） and under layer pouring asphalt mixture （40mm） as research object in this paper, and a steel bridge deck pavement model was established, through a single axis penetration test to obtain the material creep Variable parameters, using ABAQUS to calculate the steel deck pavement. The analysis shows that rutting mainly occurs in the under layer of asphalt mixture; the effect of lateral load change on the rutting is much greater than that of the longitudinal load; the rutting value is positively correlated with temperature, which is consistent with seasonal temperature change; the calculation method of the pavement at the continuous temperature change is more accurate than at the constant temperature, and the depth of the rut increases with the increase of the ground pressure. The research conclusion is of significance for the design and rutting prediction of steel bridge deck pavement.

关 键 词：车辙 蠕变试验 钢桥面铺装 有限元 

分 类 号：U443.33[建筑科学—桥梁与隧道工程]