| 沥青层隆起变形与松胀现象分析 |
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| 引用本文： | 李立寒,陈建军,苏洲,曹林涛.沥青层隆起变形与松胀现象分析[J].同济大学学报(自然科学版),2009,37(1). |
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| 作者姓名： | 李立寒 陈建军 苏洲 曹林涛 |
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| 作者单位： | 同济大学,道路与交通工程教育部重点实验室,上海,200092 |
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| 基金项目： | 交通部西部交通建设科技项目 |
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| 摘 要： | 分析了室内车辙试验试件、加速加载(ALF)车辙试验路芯样,以及沥青路面现场芯样的空隙率与高度变化,证实了在车辆荷载作用下沥青层的隆起变形与松胀现象,探讨了沥青层隆起部位松胀现象的产生机理与影响因素.以隆起系数表征隆起变形在总车辙变形中所占的比例,分析了隆起系数的影响因素与发展规律.通过对比分析,给出隆起系数的建议值范围为0～0.52,当道路宽度较窄时,隆起系数取上限;当道路宽度较大时,隆起系数取下限.
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| 关 键 词： | 沥青层 车辙变形 隆起变形 松胀作用 隆起系数 |
Analysis of Uplift Deformation and Loose Phenomena of Asphalt Layer |
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| LI Lihan,CHEN Jianjun,SU Zhou and CAO Lintao.Analysis of Uplift Deformation and Loose Phenomena of Asphalt Layer[J].Journal of Tongji University(Natural Science),2009,37(1). |
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| Authors: | LI Lihan CHEN Jianjun SU Zhou and CAO Lintao |
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| Institution: | Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China |
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| Abstract: | The paper presents an analysis of the voids and height transformation of samples employed in Loaded Wheel Tracker tests,and derived from the tests road by Accelerated Loaded Facility application and from asphalt pavement in site.The results validate that the uplift deformation and loose phenomena occur in asphalt pavement layers under vehicle loads and then the appearance mechanism and influence factors of loose phenomena of asphalt layers uplift place are explored.An analysis is made of the influence factors and development tendency of uplift coefficient, which is a ratio of uplift deformation to total rutting deformation of asphalt layers.The uplift coefficient value range is recommanded to be 0~0.52 on the basis of a contrastive analysis.Finally,the paper presents a proposal about the upper limit when the road section is narrow,and the lower limit when it is wide. |
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