【作者】 张丹；

【导师】 陈耕野； 王晓初；

【作者基本信息】 东北大学 ， 结构工程， 2009， 硕士

【摘要】 公路是国民经济发展的重要基础设施,是一笔非常可观的资产。沈山高速公路是我省通北京到沈阳高速公路的重要组成部分,是国家和辽宁省“九五”期间重点建设项目。沈山高速公路的建成通车,对于加强辽宁及整个东北地区乃至内蒙古东部地区与关内的政治经济发展有着十分重要的意义。沈山高速公路路面设计和施工属于全国一流,但投入使用后却不断出现路面早期损害。我省每年都不得不投入大量的资金进行维护和修补。虽然目前对沈山高速公路开展了相关研究,但从超载车辆角度对高速公路沥青路面损害原因开展系统分析并不多见。本文为了全面阐述超载车辆对辽宁沈山高速公路路面损害的影响及作用,先后对沈山高速锦州管理处管理路段进行了3个阶段的路况调查。其中2007年3月对大雪过后沥青路面出现的大规模坑槽进行调查；2007年7月在高温条件下专门调查了车辙；2008年3月对锦州段全线路路况进行调查,调查发现沈山高速公路路面损害主要有坑槽、车辙、裂缝和泛油四种类型。其中沥青路面在2007年11月经过维护过后除裂缝外其他路面损害依然存在。本文在路况调查和已有的路面结构设计和施工现状的基础上,结合病害的成因,分别分析超载车辆对沥青路面产生坑槽、车辙、裂缝和泛油四种病害的影响。利用粘弹性理论,采用Burgers模型,模拟沥青混合料粘弹特性,计算了汽车通行一次情况下沥青路面的残余剪应变。分析车辆行驶速度、轴载和温度对沥青路面车辙的影响。分析计算结果总结了目前超载车辆对沈山高速公路路面损害的影响。最后在对沈山高速公路沥青路面路面损害分析的基础上根据沈山实际情况,提出沈山高速公路各种病害的防治对策。更多还原

【Abstract】 Roads are the critical infrastructure of the development of national economy, which are very considerable assets. Shenshan expressway is the important part of the expressway from Beijing to Shenyang, which is the key construction project during the 9th Five-Year Plan period province and China. The opening to traffic of Shenshan expressway of Liaoning very important to reinforce the political and economic development of Liaoning and entire northeast area of China, even the eastern regions of Inner Mongolia with inside Shanhaiguan Pass.Design and construction of Shenshan expressway of Liaoning is the first-class of China, but the early damage emerged continuously after is has been put into use. The government of Liaoning province had to put a large amount of funds to maintenance and repair it every year.Although the research on Shenshan expressway is carried out, but there is rare systematic analysis from the perspective of the damage of over-loaded vehicle to asphalt pavement. Three stages of investigation on road condition were carried on in Jinzhou Management Office of Shenshan expressway in order to expound the analysis on the damage of over-limited vehicle to road surface of Shenshan Expressway. The investigation shows that the main damages of the road surface are pit groove, rutting, crack, and flushing asphalt, those are, the investigation on the large numbers of pit groove appeared after the heavy snow in March 2007, the investigation on rutting under high temperature in July 2007, and the investigation on the whole line in Jinzhou in March 2008. It is found that, beside the cracks, the damages to the road surface still existed after the maintenance in November 2007.The causes of the damages of pit groove, rutting, crack, and flushing asphalt are analyzed individually, based on the investigation of road condition and the pavement structure design and construction. The residual shearing strain of asphalt pavement after a vehicle passed was calculated by stimulating the viscoelasticity characteristic of mix material of asphalt, using viscoelasticity theory and Burges model. The influences of the speed of vehicle, the axle load and temperature on rut of road surface were analyzed. The influence of the damage of over-loaded vehicle to the road surface of Shenshan expressway was summarized by the results of the analysis.Some countermeasures to prevent the various damages of Shenshan expressway, based on the analysis of the damage of the asphalt pavement according to the actual situation.更多还原