南方某高铁主站房屋面虹吸雨水排水系统研究

Study on Siphon Rainwater Drainage System of the Main Building of the High-speed Railway in South China

南方某高铁站作为华南地区核心交通枢纽,承担繁重的客运任务。站房作为高铁站的主体建筑,该建筑面积较大,屋顶设计坡度较小,雨水排放存在一定压力。更为严重的是,在遇到雨水天气时,由于倾斜角度不够大,雨水可能会倒灌而进入室内,引发安全隐患。为解决这一问题,该站房采用了2套独立的虹吸雨水排水系统。本文以主站房屋面虹吸系统设计为基础,深入分析天沟挡水板的设计参数和汇水系统的整体结构;通过在屋面结构最低点处,计算校核管道系统的水力,系统地分析不同节点压力值、水头损失对虹吸系统运行维护的影响。同时,针对排水系统中可能存在的问题,提出可行性建议。以期为其他高铁站的屋面排水系统设计提供理论支撑,推动虹吸雨水排水系统的深入研究,以应对不同环境条件下的雨水排放问题。

As a core transportation hub in South China,a high-speed railway station in the south undertakes a heavy passenger transport task.As the main building of a high-speed railway station,the station building has a large build-ing area,a small roof design slope,and there is a certain pressure on rainwater drainage.More seriously,when en-countering rainy weather,due to the insufficient inclination angle,rainwater may flow backwards into the room,caus-ing safety hazards.To solve this problem,two independent siphon rainwater drainage systems have been adopted for the station building.Based on the design of the siphon system on the main station building surface,this paper deeply analyzes the design parameters of the gutter water baffle and the overall structure of the water catchment system;By cal-culating and verifying the hydraulic pressure of the pipeline system at the lowest point of the roof structure,the impact of different node pressure values and head losses on the operation and maintenance of the siphon system is systematical-ly analyzed.At the same time,feasible suggestions are proposed to solve the possible problems in the drainage system.It is expected to provide theoretical support for the roof drainage system design of other high-speed railway stations,promote in-depth research on siphon rainwater drainage systems,and address rainwater drainage issues under different environmental conditions.