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随着我国城市公共交通设施的飞速发展,今后我国的大、中型城市轨道交通将是城市公共交通的重点,而高架轨道交通因其客运量大、方便快捷、造价相对较底而成为各城市的首选。本文结合我国第一条城市高架轨道交通线——上海城市轨道交通明珠线的设计体会,阐述轨道交通高架桥面雨水排水的设计中在理论计算、工程中的措施、排水管配件的设施等方面的要素,供同行共同探讨。 1 桥面雨水流量的计算 根据高架桥面的结构特点,桥面雨水排水立管布置在每个桥墩两侧,桥墩之间的每孔梁（一般长约30m）的一半
With the rapid development of urban public transport facilities in our country, the rail transit in large and medium-sized cities in our country will be the focus of urban public transport in the future. However, elevated rail transit will become the most popular metropolitan area due to its large passenger volume, convenience and speed, Preferred. Based on the design experience of Shanghai Urban Rail Transit Pearl Line which is the first urban elevated rail transit line in China, this paper elaborates the theoretical calculation, engineering measures and facilities of drainage pipe fittings in the design of rainwater drainage of elevated bridge deck of rail transit Elements for peer discussion. 1 Deck Rainfall Flow Calculation According to the structural features of the viaduct deck, the rainwater draining riser of the bridge deck is arranged on both sides of each pier, and the half of each pier (usually about 30m in length) between the piers is half