【作者】 潘伟兵；

【导师】 徐兴； 黄志义；

【作者基本信息】 浙江大学 ， 桥梁与隧道工程， 2004， 硕士

【摘要】 本文以甬台温高速公路温州乐清试验段为依托，通过一系列现场试验和室内试验并加以深入的三维有限元理论计算，对高速公路路面材料(包括沥青、改性沥青、集料)的路用性能、沥青(改性沥青)混凝土配合比、路面现场试验以及路面力学计算四个方面进行了研究分析。 其中集料研究主要是玄武岩的有效密度测试方法，集料有效密度指标在沥青混合料设计中至关重要，但集料有效密度试验较为麻烦，而表观密度、毛体积密度的试验较为简单且有统一的标准，为此论文通过对试验路料场集料的一系列试验获得现场集料的表观密度、毛体积密度、有效密度之间的统计规律。通过对国产沥青、改性沥青的试验研究，探讨了浙江沿海高温多雨地区对道路沥青的要求。 通过对试验路沥青混凝土配合比试验研究得出，AC—25Ⅰ型沥青混凝土的沥青膜厚为9μm左右时，沥青混凝土的综合性能较好；AC—16Ⅰ型沥青混凝土的沥青膜厚为8μm左右时，沥青混凝土的综合性能较好；AC—13Ⅰ型沥青混凝土的沥青膜厚为8μm左右时，沥青混凝土的综合性能较好。 通过分别采用线性、非线性有限元程序和层状弹性体系理论对半刚性沥青路面的力学特性进行了深入的分析研究，得出各种计算理论和方法之间的联系和区别，并分析了各自对路面力学计算的适用性。 通过对试验段路面的线性、非线性力学计算和现场承载板试验得出：马歇尔试验不能如实反映实际路面的受力性能；沥青混凝土结构层之间通过接触传递应力，接触非线性模型比层状弹性体系模型更符合实际，接触非线性有限元计算结果可以较准确地反映实际路面的力学特性。更多还原

【Abstract】 Based on the trial-section of Wenzhou rural highway, combined with series of indoor tests and on spot tests and a great deal of theoretical arithmetic, the paper studies on the following aspects: the riding quality of raw materials( including asphalt, modified asphalt, aggregate), the mix design and test of asphalt(modified asphalt) concrete, the test of mechanical properties of asphalt concrete pavement in place, and the mechanical calculate of road pavement.The effective density of basalt is the emphases of the research of aggregate, the effective density of aggregate is a very important factor in mix design for asphalt concrete, but the method how to get it is much more difficult than to get the apparent density or the bulk density of aggregate, we get a statistical formula to get the effective density by the apparent density and the bulk density.By the research of homemade asphalt (modified asphalt) used on the trial-section, we get the requirements that asphalt should meet to when used in the region of littoral of Zhejiang province.By the research of porosity, degree of compaction and the Marshall test of asphalt concrete, we elicit that the best thickness of asphalt film for AC-25 is about 9 μ m, and for AC-16 is about 8μm, and for AC-13 is about 8μm.By series of linear and nonlinear mechanical analysis of the road pavement, and together with series of plate-bearing test and stress test in place, we elicit that Marshall mix design method is not fitful for asphalt pavement design. The mechanical property between the asphalt layers is a problem of contact. The contact nonlinear finite element method can get more credible solution than linear finite element method or Layer Theory does.更多还原