Key Challenging Project of Jingxing Expressway: Fenhe River Bridge Achieves Full Two-Way Breakthrough

2021-07-12 1013 0人评论

On July 8, a 50-meter-long, 2.8-meter-high precast T-beam weighing approximately 185 tons was steadily lowered into its designated position under the traction of a bridge erection machine, marking the full two-way breakthrough of the Fenhe River Bridge, a key challenging project of the Jingxing Expressway. With this, the Civil Works Section 1 of the Jingxing Expressway has successfully completed the two-way construction of the Fenhe River Bridge, Taohuagou Bridge, Sunjiali No. 1 Bridge, and Sunjiali No. 2 Bridge, as well as the half-width construction of the Jianyaozui Gully Bridge.

The Civil Works Section 1 project of the Jingxing Expressway, undertaken by the Road and Bridge Company of China Railway Sixth Group, is located in Fengrun Town, Jingle County, Shanxi Province. The bridge crosses "one river, two zones, and three roads," namely the Fenhe River, the National Fenhe River Wetland Protection Zone, the "Millennium Pure Dwelling" grotto cultural relic protection zone, the Jingjing Railway, National Highway 241, and the Jing-Shang Line Highway. The highest pier of the Fenhe River Bridge is 61.5 meters tall, with a total of 34 spans across the left and right carriageways and 212 precast 50-meter T-beams. The total length of the bridge is 854 meters.

During the construction of the Fenhe River Bridge, all participating employees of the Jingxing Project Department of the Road and Bridge Company fully carried forward the road-and-bridge spirit of "cutting roads through mountains and building bridges over rivers," worked in unity and cooperation, and overcame numerous difficulties, including high technical difficulty in construction, stringent environmental and water protection requirements, some pile foundations located at the edge of steep cliffs, narrow working faces, difficult access road construction, and great difficulty in organizing cross-construction. They persisted in integrating technological innovation throughout the entire construction process. Through practical innovation, they invented and applied a number of practical inventions in the construction of the Fenhe River Bridge, such as high-pier spray curing technology, an automated rebar-tying platform technology for hollow bridge piers, and an automatic rebar-tying platform for high-pier slipform construction, which played an important guaranteeing role in the completion of the bridge's two-way breakthrough on schedule. As the Fenhe River Bridge crosses multiple major traffic routes with considerable cross-operation, in order to ensure that the entire erection construction was completed safely, with high quality and efficiently, the project department adhered to high-standard design and high-standard construction and strengthened whole-process control; safety passages were set up beneath the bridge to protect passing vehicles; dedicated full-time safety officers were assigned between the precast beam yard and the bridge for round-the-clock control, providing dedicated services for beam transport vehicles to ensure smooth beam transport roads; at the same time, dedicated safety officers were designated to closely monitor on-site management and make every effort to ensure that safety measures were fully in place, thereby ensuring that the T-beam erection was completed within the scheduled time.

It is reported that the Jingxing Expressway is the first expressway project in Shanxi Province to be built with full social capital investment under the "provincial network, municipal construction" model. It is an important component of Shanxi Province's expressway network of "four vertical, fifteen horizontal, and thirty-three connecting" routes and is a key project of Shanxi Province. After the project is completed and opened to traffic, it will open up the provincial expressway exit between Shanxi Province and Shaanxi Province, which is of great significance for accelerating the eastward transport of Shaanxi coal, speeding up the economic development of the Luliang revolutionary old area, and driving the coordinated development of Shanxi and Shaanxi.


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