April 10th
No. 1 Road, Diaoyaozui District, Dadukou District, Chongqing
(Hereinafter referred to as No. 1 Road in Diaoyaozui Area)
The total weight of the Chengdu-Chongqing Railway is more than 14,000 tons
Rotate slowly and synchronously in a counterclockwise direction at a steady rate
It took 110 minutes to achieve a precise turn
The bridge is located in the Diaoyaozui area of Dadukou District, Chongqing, and the rotating bridge part of the Chengdu-Chongqing Railway is two T-shaped steel bridges with a length of 90 meters, with a single bridge width of 16.75 meters, a bridge body containing 2.7% of the longitudinal slope, a curve radius of 900 meters, and a single bridge weight of more than 7,000 tons.
According to the person in charge of the general contracting company of the Chengdu Railway Project, in order not to affect the normal passage of the China-Europe train between Chengdu and Chongqing, the project adopts the construction method of prefabricating the bridge on both sides of the line, and then transferring the bridge to the predetermined position through the hydraulic jack system.
When the bridge body rotates, the bridge pier is taken as the axis, driven by the hydraulic jack, and the two rotating bridges are rotated synchronously in the counterclockwise direction.
Before turning, the construction unit uses a jack to weigh the bridge, measure the construction parameters such as unbalanced moment, eccentric moment and friction coefficient of the rotating part, and then calculate the bridge eccentricity according to the weighing data for counterweight, so as to maintain the balance of the bridge body in the process of turning.
It is reported that the bridge is constructed through a rotating body, which can avoid the impact on the normal passage of 34 China-Europe trains and freight trains every day.
At the same time, after the bridge is completed and opened to traffic, it will improve the transportation connection between the Diaoyuzui Peninsula and other areas of Chongqing, greatly reduce the travel time, and greatly improve the travel conditions of residents in the area.