Building structure
The whole project spans Zhangjiang, connects the new old city, and connects the north and south in the east-west direction, with a total length of 2 197 meters. Zhangjiang Bridge project includes the ground road, approach bridge and main bridge of Zhangjiang Bridge. The ground road and approach bridge are two-way four lanes, and the main bridge is two-way six lanes. The design driving speed is 60 km/h and the design flood frequency is once in a hundred years. The main bridge of Zhangjiang Bridge adopts a three-span flying swallow-shaped special-shaped steel tube arch bridge, which looks like a swallow flying on Zhangjiang from a distance. Zhangjiang Bridge Project is the first urban construction project that adopts agent construction management in Ganzhou urban construction investment system reform, which is extremely challenging and innovative.
scale of construction
Zhangjiang Bridge, a key project in Ganzhou City, is an urban main road bridge integrating urban traffic and urban landscape functions. It is located in the east of Ganzhou central city, crossing Zhangjiang to connect the old Hetao City and the new Zhangjiang City. It starts from Gymnasium East Road (Jingui Road), crosses Ruijin Road, Jiangnan Zhang Avenue, Zhangjiang, Zhangjiang Jiangbei Avenue and Bayisi Avenue from west to east, meets the intersection of East Ring Road and ends at 60M east of the intersection. The total investment of the project is about 310 million yuan.
The whole project consists of west bank pavement, west bank approach bridge, Zhangjiang bridge, east bank approach bridge and east bank pavement. The total length of this project is 2197.603m, in which the bridge length is1352m, the connecting road length is 845.603m, and the attached length under the bridge is1145.172m. The approach bridge and the overpass bridge are two-way four lanes, the ramp of the upper and lower bridges is one lane, the main bridge is two-way six lanes, and the ground road is two-way four lanes. The main bridge is a three-span swallow-shaped steel tube arch bridge with a length of 254 meters, in which the main span is 158 meters and the side span is 48 meters, which are symmetrically arranged; The length of the main span steel box girder is 104m, and the rest are prestressed concrete box girder structures. The whole line adopts the structural urban trunk road standard (first-class urban trunk road). The design driving speed is 60 km/h; The design load grade of bridges and culverts adopts city-A; The design flood frequency is once in a hundred years; The pavement structure adopts asphalt concrete. The planned construction period is 26 months.
The construction of Zhangjiang Bridge has set three national firsts. The special-shaped steel tube arch with a span of158m is the largest in China. The diameter of main arch steel pipe is 1.8m, which is the largest in China. The thickness of steel pipe is 26 mm, which is the thickest in China.
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