普通干线公路再生路面结构及材料特性研究

发布时间：2018-06-04 16:44

本文选题：干线公路 + 再生结构　；参考：《北京交通大学》2014年硕士论文

【摘要】：随着我国经济建设的发展,全国进行了大规模的公路建设,之后,公路养护时代来临.每年公路大中修养护造成的铣刨料堆积如山,大都被弃之荒野。据统计,每年国省干线公路仅沥青面层旧料可回收利用的数量就约为1.6亿吨,造成了环境污染和资源浪费,对设再生路面结构和废旧沥青路面材料循环利用的研究已是大势所趋。论文对普通干线公路再生路面结构及材料特性的研究,以山西省普通干线公路再生结构和材料作为研究对象,研究内容如下： (1)对山西省普通干线公路现有路面结构型式和大中修结构型式进行归类总结；通过对近五年交通量数据进行换算,进行交通量等级重新划分；得出不同交通量等级下的各片区使用路面典型结构型式：分析普通干线公路现有路面病害及其成因,并给出改善各种病害形式的新型路面结构形式及适应性评价。 (2)针对设再生面层和设再生基层的普通干线公路的主导破损形式提出各自的设计指标,并进行轴载换算、确定其设计指标的容许值、提出参数确定及路面结构组合设计步骤。 (3)提出适宜的冷再生混合料设计流程和设计方法,提出冷再生混合料试件养生方法、混合料拌制时的投料顺序。在冷再生混合料级配范围内进行配合比设计和后期的试验研究。 (4)普通于线公路改造路面冷再生混合料设计、路用性能及施工技术研究,改造路面推荐结构使用性能评估及实体工程铺筑验证。 (5)采用应力强度因子及路面使用性能实测数据对厂拌冷再生混合料进行疲劳寿命及使用性能预估。通过力学分析及理论推导,研究该路面结构在对称荷载和偏荷载作用下其疲劳寿命能否满足设计年限内的当量荷载作用轴载。
[Abstract]:With the development of China's economic construction, a large-scale highway construction has been carried out throughout the country. The annual road maintenance caused by milling planing piles up, mostly abandoned wilderness. According to statistics, the amount of old asphalt pavement materials that can be recycled each year on national and provincial trunk roads is about 160 million tons, resulting in environmental pollution and waste of resources. The research on recycled pavement structure and recycling of waste asphalt pavement materials is the trend of the times. This paper studies the structure and material characteristics of the recycled pavement of the ordinary trunk highway, taking the regenerated structure and materials of the ordinary trunk road in Shanxi Province as the research object. The research contents are as follows: 1) classifying and summarizing the existing pavement structure type and the major and medium repair structure type of Shanxi ordinary trunk highway, and reclassifying the traffic volume grade through the conversion of the traffic volume data in the past five years; The typical structure types of pavement used in different traffic volume grades are obtained: the existing pavement diseases and their causes of formation of ordinary trunk highway are analyzed, and the new pavement structure form and adaptability evaluation are given to improve various kinds of disease forms. (2) according to the main damaged form of the ordinary trunk highway with recycled surface layer and regenerated base course, the paper puts forward their design indexes, makes the axle load conversion, determines the allowable value of the design index, and puts forward the steps of parameter determination and pavement structure combination design. 3) put forward the suitable design flow and design method of cold recycled mixture, put forward the method of preserving the health of the cold recycled mixture, and put forward the feeding sequence when the mixture is mixed. Mix ratio design and later test study were carried out in the gradation range of cold recycled mixture. (4) Design of cold recycled mixture, study of road performance and construction technology, evaluation of performance of recommended structure of modified pavement and verification of solid engineering paving. The fatigue life and performance of cold recycled mixture are predicted by using the stress intensity factor and the measured data of pavement performance. Through mechanical analysis and theoretical derivation, it is studied whether the fatigue life of the pavement structure under symmetrical and partial loads can meet the axial load of equivalent load in the design life.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414;U416.26

【参考文献】