邹城至济宁高速公路上跨京沪铁路立交桥项目迎来新进展

Core Viewpoint - The construction of the overpass bridge project on the Zou Cheng to Ji Ning expressway has made significant progress, marking an important step in the infrastructure development of the southwestern Shandong region [1][3]. Group 1: Project Details - The project is a key engineering initiative located near the Beijing-Shanghai Railway, with an average of nearly 400 trains passing daily [3]. - The completed T-shaped box girder is a single box four-chamber structure, with a main bridge superstructure designed as 2×85m full prestressed concrete variable cross-section [3]. - The height of the mid-support beam is 9.0 meters, equivalent to a three-story building, while the edge support beam is 3.5 meters high [3]. Group 2: Construction Techniques - The construction team adopted an "intelligent monitoring + precise control" approach, ensuring the stability of the support frame within a deviation of ≤1mm per day during the construction phase [4]. - A "two ends to the middle, symmetrical layering" pouring technique was used, along with an intelligent temperature control system to maintain the core temperature below 65°C during the concrete pouring phase [4]. Group 3: Safety Measures - A "three-layer protection network" was established to ensure safety, including a 2-meter high blue steel plate enclosure and a 1.2-meter high hard isolation facility [4]. - The project maintained a safety distance of ≥11.9 meters from the railway fence, with real-time communication of train operation information to ensure no disruptions occurred during construction [4]. Group 4: Project Impact - Upon completion, the project will eliminate traffic bottlenecks between Zou Cheng and Ji Ning, enhancing the expressway network in southwestern Shandong and alleviating the traffic load on National Highway 104 [8]. - The overpass design allows for a three-dimensional intersection between the expressway and the Beijing-Shanghai Railway, ensuring the safe and stable operation of this national trunk railway [8]. - The project is expected to support the integration of transportation in the Huaihai Economic Zone, promoting industrial collaboration, personnel exchanges, and high-quality economic development in the region [8].