【作者】 周谦；

【导师】 戴经梁；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2008， 博士

【摘要】 本论文在对辽宁省干线公路进行调查研究基础上,分析了不同沥青路面结构发生破坏原因,研究了气候和交通条件对辽宁省干线公路沥青路面结构的影响,提出了符合辽宁省实际的干线公路沥青路面典型结构,为解决沥青路面的破坏提供了依据。基于辽宁省气候特点,提出了辽宁省沥青性能PG分级标准,并首次定义了考虑沥青混合料高、低温和水损害的气候综合影响系数。基于辽宁省路表温度场,采用非稳态温度场有限元法分析了高、低温季节辽宁省沥青路面结构行为及稳定性,表明荷载与温度的耦合作用是造成沥青路面破损的主要原因。建立了轴载换算季节修正系数、温度修正系数和当量轴次增长率概念和计算方法。首次提出按辽宁省路面自然片区并考虑轴载换算气候修正系数来确定交通荷载的分级方法,提出了土基有效回弹模量计算方法并用来划分土基等级。基于辽宁省的实际,充分考虑当地材料、施工工艺、交通等基础上,提出了不同气候区划下,辽宁省干线公路沥青路面典型结构图。更多还原

【Abstract】 Based on the research of Liaoning Provincial arterial highway , this thesis analyzed reasons of the different asphalt pavement structure damaged, studyed the influence ,caused by the climate and traffic conditions, on the asphalt pavement structure of the arterial highway in Liaoning Province ,raised typical asphalt pavement structure which matched the actual of the Liaoning Provincial arterial highway ,and provided a basis for solving the problem of the damages of asphalt pavement.According to the climate characteristics of Liaoning Province, it raised asphalt properties PG classification standards of Liaoning Province, and for the first time consider the synthetic influencing coefficient of asphalt mixture of high and low temperature and water damage .Based upon the road surface temperature field of Liaoning Province, the thesis adopted non-steady-state temperature field of finite element and analyzed the acts and stability of asphalt pavement in high temperature, hypothermia season of Liaoning. The results indicated that load and temperature showed the coupling of asphalt pavement is the important reasons of damages.Established the concepts and formulas of season—correcting coefficient equivalent axle load , correction coefficient of temperature and equivalent axle growth rate. Put forward by the natural patches of Liaoning Province and season—correcting coefficient to determine the traffic load classification Highway, and adopted subgrade effective resilient moduli calculation method to calculate soil-grade division.Based on the actual of Liaoning Province, and give full consideration to local materials, construction technology, transportation etc, the thesis raised typical asphalt pavement structure of Liaoning Provincial arterial highway under different climate division.更多还原