| 沥青路面力学响应的季节性变化研究 |
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| 引用本文： | 赵延庆,曾辉,黄大喜.沥青路面力学响应的季节性变化研究[J].长沙交通学院学报,2008,24(1):44-48. |
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| 作者姓名： | 赵延庆 曾辉 黄大喜 |
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| 作者单位： | 1. 江苏省交通科学研究院,道路工程研究所,江苏,南京,210017
2. 内蒙古通辽市交通工程局,工程部,内蒙古,通辽,028000 |
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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： | 为使对路面结构的分析和设计更加符合实际情况，需要考虑季节性的变化．针对某一柔性基层沥青路面结构进行分析，通过室内试验确定了各层沥青混合料的动态模量主曲线和时间温度换算因子，并确定了路面结构内温度场和动态模量的分布和变化，进而计算了路面结构关键响应随时间的变化情况．分析了路表弯沉、沥青层底拉应变和土基顶面压应变季节性波动情况，并在满足工程精度要求下，确定了响应的关键位置.
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| 关 键 词： | 动态模量 力学响应 季节性变化 路面结构 温度 |
| 文章编号： | 1000-9779(2008)01-0044-05 |
| 修稿时间： | 2007年11月15 |
Study on seasonal variations of asphalt pavement responses |
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| ZHAO Yan-qing,ZENG Hui,HUANG Da-xi.Study on seasonal variations of asphalt pavement responses[J].Journal of Changsha Communications University,2008,24(1):44-48. |
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| Authors: | ZHAO Yan-qing ZENG Hui HUANG Da-xi |
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| Institution: | ZHAO Yan-qing , ZENG Hui , HUANG Da-xi (1. Department of Road Engineering,Jiangsu Transportation Research Institute, Nanjing 210017 ,China; 2. Engineering Department, Inner Mongolia Tongliao Municipal Transportation Bureau, Tongliao 028000,China) |
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| Abstract: | The seasonal variations should be taken into account for analyzing and designing pavement structure more realistically.In this study,dynamic modulus master curves and time-temperature shift factors of asphalt mixtures used in an asphalt pavement with flexible base were determined from laboratory test results,and distributions and variations of pavement temperature and dynamic modulus of asphalt mixtures were analyzed.Seasonal variations of critical pavement responses,deflection,tensile strain at the bottom of AC layers and compressive strain at the top of subgrade,were studied.Critical locations of the responses were determined which meet the requirements of engineering accuracy. |
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| Keywords: | dynamic modulus pavement responses seasonal variation pavement structure temperature |
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