Yantai's first municipal turning bridge over the railway to complete the air precise docking
On October 16, Qingdao company of China Railway 10th bureau undertook the construction of Yantai's first municipal turning bridge across the railway, which completed the precise docking in the air, marking the completion of the connection of the South Tashan road in Yantai, providing a strong guarantee for the connection of the whole South Tashan road. It is reported in
that the swivel bridge is a T-shaped rigid frame bridge with double amplitude variable beam height, with an intersection angle of 73 ° with the blue smoke railway. The swivel structure is composed of the lower turntable, the ball seat, the upper turntable and the swivel traction system. The swivel length is 100 meters, and the swivel weight is about 12000 tons, which is poured continuously at one time. In the turning process, the construction mode of "building before turning" is adopted, i.e. parallel construction with the blue smoke line, and then the turning is connected with the box girders on both sides. There are a lot of vehicles on the blue smoke line, with an average of one train passing in 20 minutes. In order to reduce the impact on railway operation, only key points at night can be selected for construction.
in order to ensure the smooth turning, a safe and reasonable construction method of ball seat installation is adopted in this construction, which effectively controls the safety risk of turning over, and a detailed turning construction scheme is formulated. The operators strictly follow the operation procedures and conduct strict measurement and control for each construction link. Through the orderly linkage of on-site technology, operation and measurement personnel, the problems before turning are effectively solved.
the author believes that the completed Tashan south road is a traffic "artery" running through the East and west of Yantai City, and a major livelihood project implemented by Yantai municipal Party committee and municipal government with a view to the long-term development of the city. It is of great significance to alleviate the traffic pressure from the East to the west, reduce the traffic congestion in peak period and promote the integrated development of the city. (Wen / Peng Wangbo)