临沂至滕州高速公路上跨胶新铁路立交桥转体成功

Core Viewpoint - The successful rotation of the 36,000-ton turntable bridge marks a significant milestone in the construction of the Linyi-Tengzhou Expressway, laying a solid foundation for the project's completion and operation [2][4] Group 1: Project Details - The Linyi-Tengzhou Expressway's turntable bridge is the largest in Linyi City, featuring the longest span, maximum rotation angle, and widest beam surface [2] - The bridge construction involves complex upper structure forms, high construction difficulty, significant safety risks, and tight schedules [2] - The bridge utilizes a double-span 2×80m prestressed concrete T-shaped rigid frame that rotates 60° clockwise to cross the Jiaoxin Railway [2] Group 2: Engineering Techniques - The project team conducted precise calculations of unbalanced torque, eccentric distance, friction torque, and friction coefficients to achieve optimal balance for the bridge's rotation [4] - Two measurement observation points were set up around the beam to monitor deformation data in real-time, and a 15-degree trial rotation was performed to validate the system's performance [4] Group 3: Strategic Importance - The Linyi-Tengzhou Expressway is a crucial part of Shandong Province's transportation network, enhancing the layout of the highway system and creating a new east-west corridor [4] - The project is expected to improve regional transportation conditions, alleviate traffic pressure on existing routes, and promote economic development in the Lunan region [4]