跨水源地桥面和路面径流排水系统设计研究

Study on Design of Drainage System for Deck and Pavement Runoff across Water Sources

摘要:

高速公路的路基和桥梁设置一般要避开水源保护区，当条件不允许而无法避开时，则必须考虑设置应急处理系统。单独桥梁穿越水源保护区或者单独路基穿越水源保护区，已有文章给出应急处理池的计算及设计方法，而桥梁和路基同时穿越水源保护区的情况下，如何合理设置应急处理系统，鲜有文章提及。韦就大桥跨越水源保护区，同时部分路基段也在水源保护区范围内，通过对常见的桥面排水方式进行分析，结合工程特性，建立了采用桥面径流收集管道、路基径流收集管道、中转应急储存池和水源保护区外应急处理池组成的应急处理系统，为今后类似工程提供技术借鉴。

Abstract:

The subgrade and bridge of expressway shall be set away from the source water protection area in general. When the conditions do not permit and cannot be avoided, the emergency treatment system must be considered. The calculation and design methods of the emergency treatment tank has been given in the existing articles when the bridge crosses the source water protection area alone or the subgrade crosses the source water protection area alone. However, few articles mention how to reasonably set up the emergency treatment system when the bridge and subgrade cross the water source protection area at the same time. Weijiu Bridge crosses the source water protection area and some subgrade sections are also within the source water protection area. Through the analysis of common bridge deck drainage methods, combined with the characteristics of this project, an emergency treatment system consisting of bridge deck runoff collection pipeline, subgrade runoff collection pipeline, transit emergency storage tank and emergency treatment tank outside the source water protection area is established, which provides the technical reference for similar projects in the future.