基于全厚式车辙试验的沥青路面车辙预估

发布时间：2018-06-04 20:10

本文选题：沥青路面 + 全厚式车辙试验　；参考：《华中科技大学》2015年硕士论文

【摘要】：车辙是沥青路面最严重的破坏形式之一,它会使沥青路面结构性能大大降低,并且严重影响路面的使用性能和服务寿命。对沥青路面车辙进行评估,是改进沥青路面设计以克服车辙破坏的关键。相对于标准车辙试验,全厚式车辙试验是对沥青混合料试验方法的一种改进,它的优点就是这种试验方法突破了对试件高度的限制,在试验过程中可以直接对两层或三层组合式试件开展试验。相对于传统单层车辙试验,由于全厚式车辙试验综合考虑了路面的结构特征、材料特征和加载特征,结果更有实际意义。本文旨在探索一种基于全厚式车辙试验的沥青路面车辙预估方法。具体地:首先,本文利用正交全厚式车辙试验的结果,分析了温度、荷载对车辙的影响规律,建立了车辙深度与温度、荷载的影响函数;然后,分析全厚式车辙试验和沥青路面车辙发展之间的相关性。通过扩展全厚式车辙试验模型,利用课题组已做的全厚式车辙试验结果验证模型,通过建立沥青路面车辙仿真模型,根据试验和模拟得出的结果,比较分析全厚式车辙试验结果和沥青路面车辙之间的相关性(或尺寸效应)。研究结果表明全厚式车辙试验与沥青路面车辙发展结果线性相关;最后,建立的车辙预估模型是基于全厚式车辙试验进行的,在此预估模型中考虑实际路面永久变形与全厚式车辙室内车辙试验结果之间的线性相关性。所提出的沥青路面车辙预估模型,应用简单、成本低,对于解决当前沥青路面车辙预估困难这一问题有一定的参考意义。
[Abstract]:Rutting is one of the most serious damage forms of asphalt pavement. It will greatly reduce the performance of asphalt pavement structure and seriously affect the pavement performance and service life. Evaluating the rutting of asphalt pavement is the key to improve the design of asphalt pavement to overcome rutting damage. Compared with the standard rutting test, the full-thickness rutting test is an improvement on the asphalt mixture test method. Its advantage is that this test method breaks through the limit on the specimen height. Two or three-layer composite specimens can be tested directly during the test. Compared with the traditional single-layer rutting test, the results of the full-thickness rutting test have more practical significance because of the comprehensive consideration of the pavement structural characteristics, material characteristics and loading characteristics. The purpose of this paper is to explore a rut prediction method for asphalt pavement based on full-thickness rutting test. Concretely: firstly, by using the results of orthogonal full-thickness rutting test, this paper analyzes the influence of temperature and load on rut, and establishes the influence function of rut depth, temperature and load. The correlation between full-thickness rutting test and asphalt pavement rutting development is analyzed. By extending the full-thickness rutting test model, using the full-thickness rutting test results of the research group to verify the model, through the establishment of asphalt pavement rutting simulation model, according to the test and simulation results, The correlation (or size effect) between the results of full-thickness rutting test and the rutting of asphalt pavement is compared and analyzed. The results show that the full-thickness rutting test is linearly related to the rutting development of asphalt pavement. Finally, the rut prediction model is based on the full-thickness rutting test. The linear correlation between the real permanent deformation of the pavement and the results of the full-thickness rutting indoor rutting test is considered in this prediction model. The rutting prediction model of asphalt pavement is simple in application and low in cost. It has some reference significance for solving the problem of rutting prediction of asphalt pavement.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217;U418.68

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