| 基于加速加载试验的半刚性基层沥青路面动力响应 |
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| 引用本文： | 董忠红,徐全亮,吕彭民. 基于加速加载试验的半刚性基层沥青路面动力响应[J]. 中国公路学报, 2011, 0(2) |
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| 作者姓名： | 董忠红 徐全亮 吕彭民 |
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| 作者单位： | 长安大学道路施工技术与装备教育部重点实验室;交通运输部公路科学研究院; |
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| 基金项目： | 国家自然科学基金项目(51008030); 中央高校基本科研业务费专项资金项目(CHD2010JC063) |
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| 摘 要： | 为了了解移动车辆荷载作用下半刚性基层沥青路面结构动力响应规律,修筑足尺试验场,采用置入式应变传感器,检测加速加载设备在车轮荷载作用下的面层底部动力响应,研究了面层底部横向分布以及轴重和温度对路面结构动力响应的影响。结果表明:移动车轮荷载下,面层底部纵向弯拉应变呈拉压应变交变状态,荷载位置仅影响其数值大小;横向弯拉应变比较复杂,胎冠下部呈现拉应变状态,2个轮胎之间及轮胎外侧呈现压应变状态,胎肩位置呈现拉压应变交变状态;面层底部弯拉应变无法充分反映超载车辆对路面的破坏作用;温度对路面结构的动力响应影响显著,30℃、40℃和50℃下沥青路面动力响应分别为常温状态下的3倍、8.9倍和13.3倍。
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| 关 键 词： | 道路工程 半刚性基层 加速加载试验 动力响应 沥青路面 轴重 温度 |
Dynamic Response of Semi-rigid Base Asphalt Pavement Based on Accelerated Pavement Test |
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| DONG Zhong-hong,XU Quan-liang,LU Peng-min. Dynamic Response of Semi-rigid Base Asphalt Pavement Based on Accelerated Pavement Test[J]. China Journal of Highway and Transport, 2011, 0(2) |
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| Authors: | DONG Zhong-hong XU Quan-liang LU Peng-min |
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| Affiliation: | DONG Zhong-hong1,XU Quan-liang2,LU Peng-min1(1.Key Laboratory of Highway Construction Technology and Equipment of Ministry of Education,Chang'an University,Xi'an 710064,Shaanxi,China,2.Research Institute of Highway of Ministry of Transport,Beijing 100088,China) |
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| Abstract: | In order to study the dynamic response rule of semi-rigid base asphalt pavement structure under moving load,a full-scale test ground was built,and set-in sensors were used to detect the dynamic response of accelerate loading facility at the bottom of the surface layer under wheel load,and the influences of the lateral distribution of bottom of surface layer,axle load and temperature on the dynamic response of pavement sructure were studied.Results show that the longitudinal flexural-tensile strain at bottom... |
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| Keywords: | road engineering semi-rigid base accelerated pavement test dynamic response asphalt pavement axle load temperature |
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