排水沥青路面平整度及离析控制

发布时间：2018-03-07 18:06

本文选题：排水沥青混合料　切入点：平整度　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：排水沥青路面凭借其良好的安全效益、环境效益以及经济效益，在欧美、日本等发达国家备受青睐。在我国，虽然进行了相关的技术研究、铺筑了数条高速公路，但是并没有得到迅速推广，原因是我国地理气候条件复杂，路面结构形式以半刚性基层为主，且存在重载交通等问题，不能直接套用国外的成功经验。因此，应结合我国道路发展实际，加大对排水沥青路面的理论研究与工程论证。基于这一目的，本文结合排水沥青混合料的结构特点，从平整度与离析的控制出发，对其施工工艺及技术要求进行了分析和研究。通过分析路面单元柱体受压缩情况，找出了沥青路面平整度的传递规律以及影响因素，并给出了相关预控措施。对排水沥青混合料粗集料的选择进行了研究，确定了粗集料压碎值，集料形状及磨光性能的选择标准。分析了排水沥青混合料配合比的设计过程，给出了目标空隙率和最佳沥青用量确定方法。通过对排水沥青混合料的特性分析，阐述了拌和站静态标定、冷料流量标定的意义和方法。结合施工实际，重点对拌和温度的选择与管理、拌和时间的确定进行理论分析与研究。分析了摊铺机熨平板的浮动工作原理，建立了摊铺机自动找平系统的数学模型，研究对比了两端挂线法、横坡控制器法、非接触式均衡梁法这三种摊铺控制方法下弯道摊铺的质量，并确定了各自的适用范围。排水沥青混合料与传统沥青混合料相比，更易发生离析。本文结合其材料特性从材料离析、温度离析和压实离析三个方面分析了离析产生的原因，给出了混合料的拌和、运输、摊铺、压实等阶段机械设备参数设定、结构优化以及施工工艺改进的建议。
[Abstract]:Drainage asphalt pavement with its good safety benefit, environmental benefit and economic benefit, in Europe and the United States, Japan and other developed countries favored. In our country, although the related technology, the number of paved highways, but did not get rapid promotion, the reason is China's geographical and climatic conditions are complex, pavement structure the semi-rigid base, and there is heavy traffic problems, can not be directly applied to the successful experience of foreign countries. Therefore, combined with China's actual development path, strengthen theoretical research and engineering of drainage asphalt pavement on the card. For this purpose, this paper combined with the structure characteristics of drainage asphalt mixture, starting from the flatness control and the segregation, the construction technology and technical requirements are analyzed and studied.
Through the analysis of pavement unit column under compression, to find out the factors of asphalt pavement smoothness and transfer effect, and proposes relevant preventive measures. The coarse aggregate selection of drainage asphalt mixture were studied to determine the coarse aggregate crushing value, the selection criteria of aggregate shape and grinding optical properties analysis. The drainage asphalt mixture ratio design process, gives the target porosity and the optimum asphalt content method. The characteristics of drainage asphalt mixture analysis, elaborated the mixing station static calibration, calibration method and significance of cold material flow. Combined with the actual construction, selection and management of the key to determine the mixing temperature. The mixing time of theoretical analysis and research.
Analysis of the working principle of float paver, establishes a mathematical model for auto leveling system of paver, compared the ends of hanging line method, the controller of the transverse gradient method, the quality of the curve paving non-contact balance beam method of these three kinds of paving control methods, and determine the scope of their respective compared with the traditional drainage asphalt mixture of asphalt mixture, more susceptible to segregation. According to the material characteristics from material segregation, the causes of segregation analysis of three aspects of temperature segregation and compaction segregation, given mixing, transportation, paving, compaction and setting parameters of mechanical equipment, structural optimization and improvement the construction process and suggestions.

【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.217

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