三水河特大桥桥面铺装及施工工艺研究

发布时间：2018-07-12 21:46

本文选题：桥面铺装 + 沥青混凝土　；参考：《长安大学》2015年硕士论文

【摘要】：桥面铺装指的是铺筑在桥面板上的保护层,能够保护桥面板防止车轮或履带直接磨耗面,保护主梁免受雨水侵蚀,并借以分散车轮的集中荷载。随着我国国民经济快速发展,大交通量和重载现象也越来越普遍,从而引起桥面铺装的破坏日趋严重,尤其是一些大桥桥面的早期破坏更是让交通部门头疼,高昂的维修加固费用让交通管理部门不堪重负。如何保证桥面铺装的耐久性和桥面的使用性能,是目前亟待解决的重要课题。论文在查阅国内外相关研究成果的基础上,论述了桥面铺装的特点和性能要求,总结了沥青混凝土桥面铺装常见的病害,从材料、结构设计、力学机理、施工、养护等方面分析了沥青混凝土桥面铺装损害的原因。结合三水河特大桥实际项目,从原材料的选择角度论述了沥青路面材料的技术特性,优化了桥面铺装沥青混合料AC-13、AC-20配合比设计;研究了沥青混合料的力学性能、高温性能、低温性能、水稳性能,并通过试验进行路用性能分析;对试验路施工摊铺进行实时检测,并现场取料级配筛分、芯样抽提试验,试验段铺筑完成后对压实度、厚度、渗水系数、构造深度等指标进行检验,结合检测结果分析其使用性能。除此,详细论述了沥青铺装层施工工艺以及施工过程中常见问题及处理方法,从而确保桥面铺装施工质量。本文从理论基础和实例验证两方面论述高桥面铺装和施工工艺方面的问题,对桥面铺装质量控制具有一定的借鉴意义。
[Abstract]:Bridge deck paving is the protective layer laid on the deck of the bridge. It can protect the bridge panel to prevent the wheel or track directly worn surface, protect the main beam from the rain erosion, and to disperse the concentrated load of the wheel. With the rapid development of our national economy, the heavy traffic and heavy load are becoming more and more common, which causes the damage of the bridge deck pavement. It is becoming more and more serious, especially the early destruction of bridge deck, which makes the traffic department headaches, and the high maintenance and strengthening cost can cause the traffic management department to be overwhelmed. How to guarantee the durability of deck pavement and the performance of the bridge surface is an important issue to be solved at present. The characteristics and performance requirements of bridge deck pavement are discussed. The common diseases of asphalt concrete bridge deck pavement are summarized. The damage causes of asphalt concrete bridge deck pavement are analyzed from material, structure design, mechanics mechanism, construction and maintenance. The asphalt pavement material is discussed from the point of selection of raw materials. Technical characteristics, optimized the bridge deck pavement asphalt mixture AC-13, AC-20 mix design, studied the mechanical properties of asphalt mixture, high temperature performance, low temperature performance, water stability, and through the test of the road performance analysis, test road construction in real time testing, and site selection grading screening, core sample extraction test, test section After the completion of the paving, the indexes of compaction degree, thickness, water seepage coefficient and structural depth are tested, and their performance is analyzed in combination with the testing results. In addition, the construction technology and common problems and treatment methods in the construction process are discussed in detail, so as to ensure the construction quality of the bridge deck. The two parties are verified from the theoretical basis and examples. This paper discusses the problems of high bridge deck pavement and construction technology, and has some reference significance for bridge deck pavement quality control.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U443.33

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