At 00:00 on May 27, 2023, after more than 1,200 days of continuous fighting, the Luzhou Shenarm City Yangtze River Bridge was officially opened to traffic. The situation that one bridge crossed the two banks ended the suffering of people on both sides of the bank looking at each other across the river and crossing boats, making the ferry a history chapter.

The Shenarm City Yangtze River Bridge is the original river-crossing channel of Hejiang New Town in Luzhou City. It is one of the important crossing bridge projects in Luzhou City. The project officially started construction in November 2019. The bridge has a total length of 1321.7 meters and a bridge deck width of 27.5 meters. The main span is 520 meters.

World-class projects with many highlights in engineering design

The main span of the bridge is 520 meters, which is the largest span of the same type of bridge in the world. The steel box girder adopts a flat and streamlined overall section with air nozzles participating in the force, which can save the amount of steel, and at the same time make the integrity and airtightness of the steel box girder better, which is conducive to dehumidification and maintenance during the operation period. Combined with the topographical conditions of the bridge area, which is high in the south and low in the north, the main bridge rationally adopts a confinement system of tower-pier-beam consolidation plus a one-way longitudinal slope (1.5%), which can not only effectively shorten the bridge length, but also reduce mountain excavation. The height reflects the green environmental protection and economy of bridge design.

Four national firsts and many innovations in craftwork methods

In order to complete the construction of this super project safely and efficiently, the project team made innovations in technology and management, and made major breakthroughs in a number of key technologies, filling the technical gaps in related fields in China.

For the first time in China, the project adopts the adaptive terrain bottomless double-wall steel cofferdam construction method, the first use of cable-stayed automatic cable threading machine, the first use of station cable-stayed cable-side central cable-deck deck cranes, the first use of tower girder fixed Low temperature and large tonnage active tension locking closure technology for structural cable-stayed bridges.

Cancellation of ferry crossing benefits 300,000 people

Luzhou Shenarm City Yangtze River Bridge, as an important crossing bridge project, built three ferry crossings, Dingshiyan and Baisha, which shortened the cross-strait distance from 2 hours to 2 minutes, eliminated the safety hazards of cross-strait ferry transportation, and facilitated the safe travel of people on both sides of the river. , benefiting 300,000 people.

After the completion of the bridge, it will further revitalize local characteristic agricultural products such as lychee and real dragon pomelo, as well as scarce tourism resources such as god-arm towns, drive the development of industries along the line, help rural revitalization, comprehensively improve the level of county economic development, and lay a solid foundation for accelerating the construction of a riverside ecotourism city in the upper reaches of the Yangtze River Solid foundation. The Luzhou Shenarm City Yangtze River Bridge will further weave the local transportation network, effectively promote the integration of Luzhou's transportation network and the development of the Yangtze River Economic Belt, strengthen the interconnection, co-construction and sharing with Chongqing's adjacent areas, and help Luzhou accelerate its integration into the Chengdu-Chongqing region. city economic circle. Editor / Xie Li