广西最大吨位转体桥完成空中转体

Core Points - The article discusses the successful completion of the aerial rotation construction of the Liuzhou Expressway Overpass Bridge, which is the largest rotating bridge in Guangxi [3]. Group 1: Project Details - The bridge spans 160 meters and weighs 27,500 tons, utilizing a "cast-in-place then rotate" construction method [3]. - The rotation was achieved using a synchronized automatic continuous traction system with two jacks, creating a horizontal rotational torque [3]. - The bridge was rotated 83.8 degrees at a speed of 0.02 radians per minute, completing the operation in 73.1 minutes [3]. Group 2: Technology and Safety Measures - The project employed PID algorithms for automatic control of the traction speed, ensuring safety and precision during the rotation [3]. - Various monitoring technologies, including speed sensors, cameras, and laser tracking instruments, were used to track the rotation parameters and ensure accurate alignment [3].