摘要
为研究多层排水沥青路面的交通荷载适用性,设计了密级配沥青路面、单层排水沥青路面、双层排水沥青路面和三层排水沥青路面这4种典型路面结构,依据规范设计指标对4种路面结构进行结构验算,结果表明4种路面结构可用于任何交通等级道路。其次,采用局部三轴多级加载试验,以最接近实际路面状态的试验条件评价多层排水沥青面层结构的高温承载力。结果表明:与密级配沥青路面相比,单层、双层和三层排水沥青路面的高温承载力分别降低了19.1%、56.7%和66.0%。随着排水沥青面层厚度的增大,路面结构高温承载力降低。单层排水沥青路面可用于特重交通等级道路,双层和三层排水沥青路面可用于重交通等级以下道路。
In order to investigate the applicability of multi-layer drainage asphalt pavements in different traffic loading levels,four typical pavement structures,including dense graded asphalt pavement,single-layer drainage asphalt pavement,double-layer drainage asphalt pavement,and triple-layer drainage asphalt pavement,were designed and calculated based on the design indicators specified in the specification.Results indicate that four pavements could be used in any traffic loading levels.Secondly,a partial triaxial multiple-stress test was used to evaluate the high temperature structure capacity of multi-layer drainage asphalt pavements under the conditions that approximately same as the field conditions.Compared with the dense graded asphalt pavement,the high temperature structure capacity of single-layer drainage asphalt pavement,double-layer drainage asphalt pavement,and triple-layer drainage asphalt pavement decreased 19.1%,56.7%,and 66.0%,respectively.The high temperature structure capacity decreased with the increasing the thickness of drainage asphalt pavement.The single-layer drainage asphalt pavement could be used in extra heavy traffic roads,while the double and triple-layer drainage asphalt pavements could be used in heavy traffic roads.
作者
王晓威
胡馨予
陈博
WANG Xiaowei;HU Xinyu;CHEN Bo(School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an,Shaanxi 710055,China;School of Highway,Chang an University,Xi'an,Shaanxi 710064,China;Xianyang Planning&Design Institute,Xianyang,Shaanxi 712000,China)
出处
《公路工程》
2023年第5期69-74,122,共7页
Highway Engineering
基金
国家自然科学基金资助项目(52008333)
陕西省自然科学基础研究计划资助项目(2020JQ-680)。
关键词
道路工程
局部三轴多级加载试验
高温承载力
多层排水沥青路面
交通荷载适用性
road engineering
partial triaxial multiple-stress test
high temperature structure capacity
multi-layer drainage asphalt pavement
applicability in different traffic levels
