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Zongxi River Super Large Bridge in Bijie, Guizhou

Label: Guizhou, Bijie, Xihe, super large bridge. Release time: November 16, 2020 click 636 second
? ? Zongxi River Bridge The total length is 924.5m. The starting point stake number is k106 + 237.5, and the end pile number is k107 + 162. The main bridge is a deck type steel pipe concrete soil truss arch with a clear span of 360 M. the net rise of the main arch is 69m. Chengdu personnel examination center has a rise span ratio of 1 / 5.217 and an arch axis coefficient of M = 1.3. The net width of the bridge deck is 24.5 m, with four lanes in two directions. The whole bridge is made of prestressed materials( Finish rolled rebar Prestressed steel strand )Carry out tensioning or fixing construction.
Construction drawing under construction of zongxihe bridge: Zongxi River Bridge

 Zongxi River Bridge The structure of the deck arch bridge is similar to the traditional stone arch bridge, but the material changes from stone to steel pipe, and the color changes from gray to dazzling orange, like a rainbow flying across. The scenery on both sides of the Zongxi River Gorge will be more colorful. The total height of the bridge is about 70 tons from the river. How to draw the first rainbow in Guizhou with a weight of 5370 tons and a span of 360 meters at a height of 270 meters is a big problem. "Zongxi River Bridge has the characteristics of difficult construction conditions, complex construction technology and high technical difficulty." Wang Zhijian, the project director of the third contract section of BIDU expressway of Guizhou Bridge Construction Group No.10 company, who is responsible for the construction of zongxihe super large bridge, said. Wang Zhijian introduced that the steel structure of the main bridge is processed for the first time in the off-site factory, and then transported to the construction site for the second processing. According to the professional view, the construction cost of the website, the secondary processing of the Zongxi River Bridge, is called the re assembly operation. Wang Zhijian said that the company has set up two "2 + 1" reassembly platforms, which are assembled in sections on both sides of the Strait and upstream and downstream simultaneously by adopting vertical assembly construction technology. Looking from the approach bridge, the H-shaped suspension tower stands erect like the majestic Arc de Triomphe. When it completes its mission, it will leave people with a monument engraved with history. The distance between the two towers is 468m, and 18 steel wire ropes with a diameter of 60cm are divided into two groups, which are erected on the shoulders of the tower, and then connected with the mountains on both sides through the anchorage, anchor and anchor cable, the whole cable hoisting system is formed. Such a hoisting system can only lift 160 tons of things at a time. In other words, the Zongxi river bridge must be lifted many times. According to reports, in the hoisting stage, the main arch ring of the grand bridge will be divided into 14 sections for sectional hoisting from the arch foot to the vault. With the closure section, the bridge will be hoisted for 58 times, of which the lifting weight of the largest segment is 143 tons.
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