8900 tons railway bridge 73 minutes "gorgeous turn"

At 1:20 a.m. yesterday, the turning of the continuous beam of Jingxiong Intercity Railway across Tianjin-Baotou Railway was successfully completed. This is the first turning of the Jingxiong Intercity Railway across the existing high-speed railway and the first turning of the bridge in the Xiongan New Area. It is of great significance for the timely opening of the Jingxiong Intercity Railway and the promotion of the construction of the Xiongan New Area.

According to the relevant person in charge of the construction headquarters of Jingxiong Intercity Railway, the construction of continuous beam across Tianjin-Baotou Railway of Jingxiong Intercity Railway adopts (488048) m side bracket large section cast-in-situ counter-clockwise turning method at the bottom of pier. The length of the turning beam is 78 meters, the total weight of the turning body is 8900 tons, and the turning angle is 62 degrees 32'. After the completion of the rotation, the steel shell method is adopted in the closing section of the middle span to effectively avoid the construction risk and ensure the safety of the railway operation line. The whole turning project started at 0:07 and ended at 1:20. It took 73 minutes. A 6031 A 6031 In the construction of continuous beam rotation, a systematic special standard for design and construction quality control of continuous beam pier bottom rotation of high-speed railway has been formed for the first time. Intelligence is the main support in construction, and BIM technology is emphasized. Through BIMIOT model, field video surveillance, speed monitoring, stress monitoring, wind speed monitoring, temperature monitoring and other data are widely integrated to carry out collision inspection, virtual turning and three-dimensional visualization of turning construction. Problem systems that may arise in turning construction are put forward. Prejudging in advance ensures that the construction progress is controllable, the quality is safe and the quality is excellent at one time. A 6031 A 6031 A new line of Jingxiong Intercity Railway is 92.03 kilometers long. There are five stations in Beijing Daxing Station, Daxing Airport Station, Gu'an East Station, Bazhou North Station and Xiong'an Station. After the whole line is opened to traffic, high-speed rail will be interconnected with major cities in the country.