期刊论文

Field measurement of strain response for typical asphalt pavement

Pan Qin-xue

英文

中南大学学报(英文版)

2095-2899

2021

28

2

618-632

10.1007/s11771-021-4626-9

Foundation item: Projects(51908071, 51708071) supported by National Natural Science Foundation of China; Project(2020JJ5975) supported by the Natural Science Foundation of Hunan Province, China; Project(18C0194) supported by the Scientific Research Project of Education Department of Hunan Province, China; Project(kfj190301) supported by Open Fund of Key Laboratory of Road Structure and Material of Ministry of Transport (Changsha University of Science & Technology), China

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In order to reveal the changing law of the mechanical response of asphalt pavements under the action of vehicle load and provide references for the design of durable pavements, three typical asphalt pavement structures with flexible base (S1), combined base (S2), and semi-rigid base (S3) were selected to perform field strain tests under static and dynamic load using the fiber Bragg grating optical sensing technology. The changing characteristics of the strain field along the horizontal and depth directions of pavements were analyzed. The result...

为了揭示沥青路面在车辆荷载作用下的力学响应变化规律,为耐久性路面设计提供参考,采用光纤光栅传感技术,对柔性基层（S1）、组合式基层（S2）及半刚性基层（S3）3种典型沥青路面结构开展了动静载作用下的应变现场测试试验,分析了路面应变沿水平和深度方向的应变场变化规律。结果表明,中上面层及下基层底为沥青路面最不利层位;此外,面层和基层的最不利荷载点位分别为轮载中心和轮隙中心;随着基层模量的增加,面层最不利层位逐渐由下面层上移至中上面层;揭示了结构层应变与车速之间的幂函数关系;相对于其他路面结构,半刚性基层沥青路面结构应变值最小,其可作为耐久性路面的优选结构类型。