Introduction of Lanzhou Xisha Yellow River Bridge?

Lanzhou Xisha Yellow River Bridge is located on the Zhong Jiahe River in Lanzhou City, Gansu Province. The bridge is a fish-bellied steel truss beam and a concrete T-beam bridge. It is connected to the ring road in the south and the Zhongchuan Highway in the north. It is the main passage from Xigu District to Zhongchuan Airport and Anning District, and it is also an important traffic artery in the west of Lanzhou City. Xisha Yellow River Bridge was built in 197 1 year, and was rebuilt and strengthened once in 2005. Now the bridge is 320 meters long, only 1 1 meter wide, with two lanes in both directions, of which the carriageway is 7 meters and the sidewalk is 1.257 meters.

work progress

Xisha Yellow River Bridge was built in 197 1 year, located in Zhong Jiahe (the northern end of Gulang Road), Xigu District, Lanzhou City, Gansu Province. It was rebuilt and strengthened in 2005. Now the bridge is 320 meters long and only 1 1 meter wide, with two lanes.

bridgework

The bridge was invested and built by Lanzhou Municipal Engineering Company, designed by Lanzhou Survey and Design Department and undertaken by Lanzhou Municipal Engineering Company. The design load levels are-18 and Tuo -80, the basic earthquake intensity is seven degrees, the navigation standard is five, the design flood frequency is1100, the design flood flow is 6500m3 /s, and the design flood level is1539.5m. The bridge is a fish. The carriageway is 7m, the sidewalk 1.25×2m, and the span is 5× 22.16m+3× 32.6m+5× 22.16m. The superstructure is a fish-bellied steel truss beam, with a main span of 3 spans and a span of 32.6 meters. The remaining 10 spans are assembled ordinary reinforced concrete T beams with a span of 22. 16 meters. ..

This bridge is 320 meters long. 197/kloc-0 started construction in June, and19 was completed and opened to traffic in June, 1974. The bridge was invested and built by Lanzhou Municipal Engineering Company, designed by Lanzhou Survey and Design Department and undertaken by Lanzhou Municipal Engineering Company. The design load levels are steam-18 and Tuo -80, the basic earthquake intensity is VII, the navigation standard is level 5, the design flood frequency is1100, the design flood flow is 6500IIi3/s, and the design flood level is1539.5m. The bridge is a fish-bellied steel truss beam and a concrete T-beam bridge, with a deck width of 100 m, in which the carriageway is 7m, the superstructure of the sidewalk is a three-span fish-bellied steel truss beam with a span of 32.6m, and the remaining 1 0 span is an assembled ordinary reinforced concrete T-beam with a span of 22.16m ... The substructure is an open-cut foundation and an open caisson foundation. After more than 30 years of operation and use, the deck pavement of the bridge has been damaged, partially completely damaged, and the deck feels obvious when vehicles pass by. Therefore, after investigation, demonstration and design, Lanzhou municipal government decided to transform and strengthen it. Bridge reconstruction and reinforcement projects mainly include bridge superstructure replacement, substructure maintenance and ancillary facilities maintenance, with a total investment of more than 20 million yuan. According to the planning of Lanzhou City, five modern river-crossing bridges will be built in Lanzhou in the next 10 ~ 20 years, of which the Taoyuan Yellow River Bridge in Gulang Road is adjacent to the Xisha Yellow River Bridge and will replace the Xisha Yellow River Bridge. The river section where the bridge is located belongs to a canyon river, with spacious valley, slightly curved channel, basically stable water flow and relatively stable riverbed. The terrain on both banks is relatively high, the left bank is a valley terrace, and the right bank is connected with Xigu City of Lanzhou City. There are dikes and roads along the river, and the reach has certain flood control pressure.

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