高速公路路面排水计算分析

发布时间：2018-04-14 16:30

本文选题：高速公路 + 排水系统　；参考：《山东大学》2015年硕士论文

【摘要】：道路排水问题常常导致路面损坏、行车安全及路基水毁等一系列灾害的产生,其对路基危害的主要表现为排水形式不当引起的坡面冲刷和边坡失稳等。可见研究路面排水形式和坡面防护对于减小公路路基水损害,保障路基安全运营具有重要意义。目前,国内外学者已对路面排水和坡面防护开展了较多的研究,但公路排水系统的形式和设计方法多直接套用现有规范或国内外标准,边坡防护的设计通常独立于公路排水系统之外,失去了边坡防护与排水系统的统一性。针对上述问题,本文依托已国家高速公路网岚曹高速临枣段路面排水改造工程,重点对高速公路路面排水进行系统分析。本文通过分析路面结构水损坏机理、路面排水系统的组成、路面分散式排水和路面集中排水机理,总结了不同路面排水形式的适用条件；通过理论计算和FLAC3D数值模拟的手段,分别计算了路基坡面冲刷稳定性和路基边坡整体稳定性,对路基的坡面防护形式和临界地下水位高度进行了相应的计算；分析了分散式排水改集中排水的可行性并进行了设计计算；最后提出了路面排水系统及边坡防护综合设计方法,并就具体改造工程设计了具体的施工方案。本文研究成果通过补充和完善高速公路排水系统及防护的计算和设计理论,使公路排水和防护趋于合理,提高了高速公路抗水毁能力和整体稳定性,对于保障高速公路的长期安全运营具有重要意义。
[Abstract]:Road drainage problems often lead to a series of disasters, such as road surface damage, driving safety and subgrade water damage. The main hazards to roadbed are slope erosion and slope instability caused by improper drainage form.It can be seen that the study of pavement drainage and slope protection is of great significance to reduce the road subgrade water damage and ensure the safe operation of roadbed.At present, scholars at home and abroad have carried out more research on pavement drainage and slope protection, but the forms and design methods of highway drainage system are mostly directly applied to existing codes or standards at home and abroad.The design of slope protection is usually independent of highway drainage system, which loses the unity of slope protection and drainage system.In view of the above problems, this paper focuses on the systematic analysis of highway surface drainage by relying on the road surface drainage reconstruction project of Lancao Expressway in Lancao Expressway.Through analyzing the mechanism of water damage of pavement structure, the composition of pavement drainage system, the mechanism of pavement dispersion drainage and the mechanism of road surface concentrated drainage, this paper summarizes the applicable conditions of different pavement drainage forms, and by means of theoretical calculation and FLAC3D numerical simulation,The erosion stability of embankment slope and the overall stability of embankment slope are calculated respectively.The feasibility and design calculation of decentralized drainage for centralized drainage are analyzed. Finally, a comprehensive design method for pavement drainage system and slope protection is put forward, and a concrete construction scheme is designed for the concrete reconstruction project.By supplementing and perfecting the calculation and design theory of highway drainage system and protection, the research results of this paper make the highway drainage and protection more reasonable, and improve the anti-damage ability and overall stability of freeway.It is of great significance to ensure the long-term safe operation of expressway.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U417.3

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