荆州李埠长江公铁大桥双主塔同日封顶

Core Points - The Jingzhou Liubu Yangtze River Road-Rail Bridge has reached a significant milestone with the completion of the main towers, marking the transition to the upper structure construction phase [1][5] - The bridge features a unique "one bridge, three uses" layered design, accommodating both highway and railway traffic, enhancing regional connectivity [3][5] Group 1: Construction Details - The main towers on both banks utilize a portal frame structure, with the north tower standing at 215.5 meters and the south tower at 220.5 meters [2] - The bridge spans 1,723 meters in total, with a main span of 1,120 meters, designed to support vehicles and high-speed trains at a height of 50 meters above the river [2] - A custom lightweight intelligent tower construction machine has been developed to address the complex shape and precision requirements of the towers, improving construction efficiency by 30% and reducing labor by 40% [2] Group 2: Technological Innovations - The tower construction machine is equipped with an intelligent maintenance and temperature control system, which automates the curing process of large volumes of concrete to prevent harmful cracks [2] - A 5G remote control system for tower cranes allows operators to manage high-altitude lifting from the ground, enhancing safety and operational efficiency [2] - The project employs a bridge intelligent construction cloud platform, enabling a digital simulation of the construction process to reduce safety risks and improve precision [2] Group 3: Project Timeline and Impact - The Jingzhou Liubu Yangtze River Bridge is a key transportation project in Hubei Province and is expected to be completed and open to traffic by 2028, with the bridge's main structure expected to be finished by May 2027 [5] - Upon completion, the bridge will connect major highways and railways, significantly contributing to the development of the Yangtze River Economic Belt and enhancing the regional economic landscape [5]