深圳首个智能化全互通立交桥将亮相侨城东路 “建这个立交桥跟搭乐高一样”

Core Viewpoint - The construction of Shenzhen's first intelligent all-interchange prefabricated bridge on Qiaocheng East Road is set to significantly enhance transportation efficiency in the region, with a focus on modular and automated construction techniques [1][2]. Group 1: Project Overview - The Qiaocheng East Road North Extension Project will commence full construction in 2025, spanning approximately 15.7 kilometers with a dual six-lane design and a speed limit of 80 km/h [1]. - The project includes the construction of 5 new tunnels totaling about 13.9 kilometers, 3 mainline bridges with a total length of 6.7 kilometers, 1 pedestrian overpass, and 4 interchanges [1]. - The North Ring Interchange, a key node of the project, will feature 2 mainline bridges and 8 ramp bridges, with a total bridge length of 2887.1 meters [1]. Group 2: Construction Techniques - The project utilizes modular and factory-prefabricated construction methods, likened to "building with Lego," which allows for simultaneous construction of pile foundations and columns, significantly speeding up the construction process [2]. - The installation time for prefabricated columns has been reduced from at least 7 days to 1.5 days, enhancing overall efficiency [2]. - Advanced technologies such as dual total station positioning, deviation reserve reinforcement, and laser leveling are employed to ensure precise installation of large prefabricated components [2]. Group 3: Tunnel Construction - The 4th tunnel, the longest in the Qiaocheng East Road North Extension, features a non-rail section length of 2980 meters, with 80% of the surrounding rock classified as grade three [2]. - The project team has implemented fully mechanized construction for the tunnel, achieving a 30% increase in overall construction efficiency and reducing the excavation cycle time by 2 hours [2].