高速公路桥梁集中排水系统计算分析

Calculation and Analysis of Concentrated Drainage System of Expressway Bridge

高速公路桥梁运营期间桥面径流污水长期存在,并且含有大量的有机物、重金属、油脂、悬浮固体、病原体等,对于禁止桥面径流外排的河流或者位于饮用水源保护区的水系,桥梁纵向集中排水系统能够有效防止桥面径流污水直接排入跨越水体,较好地保护了水环境。论文通过对桥梁纵向集中排水系统构造设计,以及不同管径的排水管水文、水力计算分析,结合主要材料工程费用和排水管安装的施工难度,经过综合比较分析得出了不同管径PVC排水管在桥梁工程中的适用情况。

During the operation of highway bridge,the bridge deck runoff has long existed,and contained a lot of organic matter,heavy metals,oil,suspended solids,pathogens,etc.,for the prohibition of the river or the water source protection area of drinking water. In this paper,the structural design of the longitudinal central drainage system of bridge,the hydrological and hydraulic calculation analysis of different diameters of the drainage pipe,combined with the construction difficulty of the main materials and the installation of the drainage pipe,the application of the different diameter PVC pipe in the bridge engineering is obtained.