This 1,700 -meter -wide waterfall in the river crossing the river is getting hot, and the chief designer interprets the cause of the spectacle.

Screenshot of video taken by netizens.

"The waterfall landscape is due to the particularity of the drainage design of the bridge surface." Xu Gongyi introduced that the main span of Yangsi Harbor Yangtze River Bridge is 1700 meters and the structure is 28 meters wide. In the drainage design, like most other echo bridges, a set of water leakage holes are set on both sides of the bridge.

Drainage pipeline on the Yangtze River Bridge of Yangsi Port. Photo by internship reporter Fan Youhan

Xu Gongyi said that the Yangsi Port Bridge is too long and too wide, and there are many lanes, and it is still a quick road auxiliary bridge. water. "Bridge area water will affect driving safety. At the same time, the weight of the rainwater is all over the bridge body, which is not conducive to the safety of the bridge body."

"We must consider that when the heavy rain is heavy rain, the bridge deck can also be quickly and uniformly drain, rather than draining in one place." Xu Gongyi explained that when the rainfall intensity is low, the rainwater is discharged to the two sides of the strait through the groove. At the current heavy rain, the diversion will not be quickly sent to the excess rainwater that flows to the two sides of the strait to quickly send it to the water grooves on both sides, and then directly inject the Yangtze River through the leakage hole to form a water curtain waterfall.

Drainage pipeline on the Yangtze River Bridge of Yangsi Port. Photo by internship reporter Fan Youhan

"I watched the video. I think that every leakage hole plays a role, so it will form a spectacular scene of the curtain waterfall." He said.

Xu Gongyi also introduced that the drainage design of the bridge and bridge should consider the needs of traffic flow and driving speed to ensure the safety requirements for driving during the rainfall of various intensity, and then make corresponding design measures such as structural structure and heavy rain intensity. The Qingshan Yangtze River Bridge drainage system adopts a similar design as the Yangsi -port Yangtze River Bridge. When it encounters heavy rain, the waterfall curtain effect will also be formed.

Yangsi Port Yangtze River Bridge. Photo by internship reporter Fan Youhan

【Edit: Zhao Ke】

- END -