During the National Day holiday, most people are on vacation, but at an altitude of more than 300 meters away from the Liuxi Miao Township section of Yiliang County, Zhaotong City, Yunnan Province, Baishui River, a group of builders are working overtime to lift the bridge pieces to overcome the hoisting problem of the main arch ring of Baishui River Super Large Bridge, which is one of the phase II control projects of Yibin Zhaotong expressway.
The elevation from the bridge deck to the Baishui River is 332.5m.
In the face of many difficulties and obstacles in the construction, the contractor of the control project works closely with the construction party to install slag retaining wall, protective net, protective shed and other facilities.
The hoisting and installation work began on July 18 this year.
At present, the actual investment is close to 300 million yuan.
It is very difficult to excavate and support bridge piers, and it is even more difficult to transport large components and lift bridge pieces, which are essential for bridge repair.
Surprisingly, due to the multiple superposition of unfavorable factors such as geography, climate, river crossing and road crossing, Baishuijiang bridge is the most difficult bridge under construction in Yunnan Province.
The design quantity of approach bridge pile foundation is 56, and 43 piles have been completed in total; 34 pier columns are designed and 8 are completed in total; The design of 2 bearing platforms has been completed; The design of 93.2m high pier has been completed; 26 bent caps have been designed, and 8 have been completed in total, and all projects have been smoothly promoted.
At present, the main arch ring is being hoisted through the cable crane system, and the closure of the main arch ring is expected to be completed on December 20, 2021.
Source @ Zhaotong daily.
In addition to the main bridge, there are thirteen approach bridges with a total length of 755.8m.
The completion of the whole project is estimated to be 400 million yuan, which is undertaken by the Engineering Bureau Co., Ltd.
The construction of Baishuijiang super major bridge is divided into nine stages: arch seat excavation, arch seat concrete pouring, junction pier construction, cable hoisting and installation, main arch ring hoisting, column hoisting on the arch, deck composite beam hoisting, T-beam erection of the remaining approach bridge and pavement traffic safety.
By the end of September this year, the hoisting and installation of 20 truss pieces in 3 sections and 4 sections on the left and right banks had been completed, accounting for one third of the total.
It is reported that the main arch ring of Baishuijiang bridge has a total of 21 sections and 63 pieces.
The estimated investment is 240 million yuan.
It is a deck steel box truss [h é ng] rib arch bridge.
Rendering of Baishuijiang Super Major Bridge Baishuijiang super major bridge is the most difficult bridge under construction in Yunnan.
It is located in Liuxi Township, Yiliang County.
In addition, there are Shifeng class II Highway and 008 Township Road at the bottom of the valley.
It is a control project of phase II of Yizhao Expressway under construction.
It crosses the Baishuijiang River, crosses the Liuxi tunnel on the left and machaopo tunnel on the right.
of Sinohydro Bureau 14.
At the same time, a water platform is built on the surface of Baishui River and a cable crane system is erected in the air, It is used to solve the transportation and hoisting problems of large components in construction.
“Baishuijiang bridge is the most difficult bridge under construction in Yunnan at present, but we are confident to complete it according to quality and quantity.” on October 1, Li Zerong, deputy production manager of B1 Project Department of Yizhao expressway of Sinohydro Bureau 14, said that Baishuijiang bridge is located in a deep “V” shaped Valley, with steep terrain, broken rocks, rainy and foggy, and hot and humid temperature, The bridge crosses the Baishui River.
