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| 沥青砼表面裂纹对反射裂纹扩展影响试验研究 | |
| 引用本文： | 何天贵,陈军,张青军,罗辉. 沥青砼表面裂纹对反射裂纹扩展影响试验研究[J]. 华中科技大学学报(城市科学版), 2011, 28(1) |
| 作者姓名： | 何天贵 陈军 张青军 罗辉 |
| 作者单位： | 1. 华中科技大学土木工程与力学学院,湖北,武汉,430074 2. 河南省交通建设工程有限公司,河南,郑州,450000 |
| 摘 要： | 在沥青混凝土路面局部较小范围内,往往同时含有表面裂纹和反射裂纹,本文从室内试验的角度研究了表面裂纹对反射裂纹扩展的影响.在试件表面和底面预制裂纹来模拟路面沥青混凝土实际情况,通过弯曲试验演示裂纹扩展情况.试验结果表明,表面裂纹对反射裂纹的起裂角、扩展路径、砼弯拉强度都有影响:起裂角度大小与间距有关,一般随间距增大,先增大后减小;起裂方向与表面裂纹的方位一致;如果将扩展路径分为初始阶段、调整阶段、最终阶段,表面裂纹对初始阶段影响最大,裂纹斜向起裂,随后逐步调整为竖向,使扩展路径呈明显的曲线状;试件弯拉强度随间距的增大,先减小后增大. |
| 关 键 词： | 表面裂纹 起裂角 扩展路径 弯拉强度 试验研究 |
Experimental Study on the Influence of the Surface Crack on the Propagation of Reflect Crack in Asphalt Concrete |
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| HE Tian-gui,CHEN Jun,ZHANG Qing-jun,LUO Hui. Experimental Study on the Influence of the Surface Crack on the Propagation of Reflect Crack in Asphalt Concrete[J]. Journal of Huazhong University of Science and Technology, 2011, 28(1) | |
| Authors: | HE Tian-gui CHEN Jun ZHANG Qing-jun LUO Hui |
| Affiliation: | HE Tian-gui1,CHEN Jun2,ZHANG Qing-jun2,LUO Hui1(1.School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China,2.Traffic Construction Engineering Co Ltd of Henan Province,Zhengzhou 45000,China) |
| Abstract: | The surface crack and the reflect crack are usually existed simultaneously in a small local range of the asphalt concrete pavement.In this paper,the influences of the surface crack on the propagation of reflect crack via laboratory test were studied.The pre-crack on both the surface and underside of the specimen was set to simulate the actual situation of asphalt concrete pavement,the crack propagation via bending test was then studied.The results show that the initiation angle,propagation path and flexural... |
| Keywords: | surface crack initiation angle propagation path flexural tensile strength experimental study |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |