Wanjiali Road Fast Transformation of the Beilou Beam Construction of the Beilong Line Beam Construction was completed

Wanjiali Road rapidly transforms the structural diagram of the power tunnel of the North Extension Line (including the power tunnel) project. Photo Conferry of the County Key Construction Project Affairs Center

Xingsha Times (Reporter Sheng Lei Correspondent Huang Chuyun) Recently, with the joint force of two 80 -ton cranes, with the first steel plate beam with a span of 30 meters and a weight of about 30 tons, it fell steadily at 38-39 On both ends of the pier, the beams of Wanjiali Road rapidly transformed the north extension line (including the power tunnel) project. The success of the beam marked the new stage of the project entering the steel plate combination beam construction, laying a solid foundation for the goal of the main line at the end of the year.

Avoid the peak of traffic

Take half of the road closed construction

Wanjiali North Road is a north -south main road, and it is also an important road for both Changsha County and Changsha City. "The traffic flow of this section, limited space for enclosure operations, complex geology along the line, staggered underground pipelines, high -pressure cables, natural gas and other pipelines are difficult to move, which brings certain difficulties to construction operations." Introduction, in order to ensure the safe and smooth lifting of the steel plate combination beam, the project department has repeatedly coordinated the streets, communities, traffic police and other departments, as well as relevant pipeline units, formulated special construction plans, held a transportation organization and management coordination meeting. Optimize construction organizations. At the same time, the on -site technical personnel and the beam team have carried out security technical intercourse, standardized construction management procedures, and ensured the final precise positioning of the steel plate beams under the premise of ensuring safety.

"When the beams are raised, we staggered the peak of the traffic, and chose to take a small period of traffic at about 2 am, and take half -road closed construction. The project staff fully cooperate with the traffic police department to implement traffic control in the form of a short -term bayonet. Ensure that the road is smooth and the construction is absolutely safe, "the person in charge said.

The whole line adopts steel plate combination beam

Reduce cost and maintenance costs

The reporter learned that the rapid transformation of Wanjiali Road to the North Extension Line (including the power tunnel) project involves many new processes and new technologies. The high -steel plate combination beams adopted across the line are one of them.

“钢板组合梁结构与传统桥梁施工方式有很大不同，传统桥梁上部结构施工，一般是先搭设满堂支架，然后支模板、绑钢筋，再进行混凝土浇筑。”中铁五局项目负责人介绍，而As a new structure, the steel plate combination beam is transported to the construction site after the component is processed to the construction site after the prefabricated beam farms are processed, and then the section of the section is a steel plate beam with the section of the steel, and the steel concrete bridge panel, the bridge panel panel on it, the bridge panel panel Conditioning with the steel beams through the shear nail to form the overall structure of a combination beam.

In addition, when the steel plate combination beam is under construction, the bottom of the bridge does not need to be built at the bottom of the bridge, and just set a small amount of temporary branches, which can minimize the adverse effects of construction on the bottom of the bridge.

"Compared to the traditional bridge, the steel plate combination beam can reduce the cost of the bridge structure, shorten the construction cycle, alleviate the traffic congestion during construction and the use of the use of the structure." The construction method has canceled a large number of on -site welding, which can avoid damage to the anti -rust coating of steel beams, enhance the durability of the structure, and reduce the cost of maintenance and maintenance of the bridge later, and achieve the optimization of the entire life cycle of the bridge structure.

After the project is completed

It will shorten the driving time from Xingsha to the urban area

Wanjiali Road Fast Transformation of the North Extension Line (including the Power Tunnel) project starts at the intersection of Wanjiali Road and Fuyuan Road. bridge. The total length of the ground line is 4.8 kilometers, using the urban main road standard, the design speed is 50 kilometers/h, and the two -way six lanes; the total length of the viaduct is 4.275 kilometers. The width of the bridge is 25 meters to 32 meters. The elevated system includes the main bridge and the 3 pairs of upper and lower ramps, crossing the existing Star Sand Linking Line Viaduct, and the Star Sand Link Line is provided, which contains 7 ramps.

According to the person in charge of the county key construction project affairs center, as a key construction project in Changsha, after the completion of Wanjiali Road, after the completion of the North Extension Project, it will carry the function of mid -to -long -distance transportation, especially long -distance transit traffic, which effectively relieves Changsha. The traffic congestion of the north and south of the city will also be released. "After the project is opened to traffic, it can achieve seamless docks of Xiangfu Road elevated, Wanjiali Road, Xingsha connection line and the second ring line. The existing Wanjiali North Road traffic saturation problem, shortening the driving time of the stars and sandy areas to enter the main urban area, and accelerating the integration and development of Xingsha and Changsha City. "

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