brief introduction
The main bridge of Mulan River Bridge adopts self-anchored suspension cable with single tower and single cable, which is the first in China. Mulanxi Bridge is the key project of Ligang Avenue in Putian City. The downtown area of Putian is an important passage to and from shenyang-haikou expressway and Putian Railway Station. It has not only become a landmark building in Putian, but also provided valuable experience for the construction of such bridges.
Know-how information
Mulanxi Bridge is a self-anchored suspension bridge with single tower and single cable plane prestressed concrete beam, with a main span of 100m. The main tower pier is consolidated with the main girder, and the rest piers are supported by movable supports. The main tower is 64 meters high, including 44.75 meters from the deck. There are 15 sets of slings on both sides of the main tower. The whole bridge is equipped with a main cable, which is placed in the center of the beam and directly anchored on the beam. The main cable is about 230 meters long and consists of 828 1 galvanized steel wire with a diameter of 5. 1 mm. The stiffening beam adopts prestressed concrete "inverted trapezoidal box section" beam structure, with a single box and three rooms. The beam height is 3.5 meters, and the roof width is 37.5 meters .. The main tower pier foundation adopts large-diameter rock-socketed bored piles. There are 1 14 piles in the whole bridge.
Self-anchored suspension bridge is a new type of bridge structure, and its design and construction technology, construction steps and control are very complicated. Construction technology is difficult, which is different from ordinary bridge construction. Therefore, the engineering and technical personnel of the project department have a detailed understanding of the actual hydrological and geological construction conditions of the construction site according to the design drawings and documents. After organizing technical consultation for many times, we have worked out a careful and feasible construction organization design, carefully organized the construction, and organized experts to demonstrate and formulate a special plan in view of the technical difficulties in the construction process. Through strict and scientific construction technology organization and support from all sides, the high-quality and safe completion is ensured.
designer
Mulanxi Bridge was designed by Lin Yuanpei, a famous bridge expert and Puji academician in China. Chen Zhili, State Councilor and former Minister of Education, has inscribed it as "Mulan Bridge". The total length is 860m, the bridge deck is 37.5 m wide, and it is designed with two-way and six lanes, with a total investment of 65.438+0.8 billion yuan. With the theme of "Lake Landscape Blue" with Putian characteristics, Mulanxi Bridge combines Putian's human landscape with the natural environment, realizes the traffic function of the bridge, shows the aesthetic value of the bridge, and embodies Putian's regional culture and characteristics of the times.
construction unit
Mulan River Bridge started construction on August/KOOC-0/8, 2006, with a total investment of/KOOC-0/80,000 yuan, and was officially opened to traffic on August/KOOC-0/8, 2009.
Contractor: Beijing Municipal Road and Bridge Holding Company Third Company.
Supervision unit: Wuhan Bridge Science Research Institute
Construction unit: Putian Land Reserve Center
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