我国首个“六改十二车道” 高速改扩建项目通车

Group 1 - The project, known as the Qi-Ji project, is the first "six-to-twelve lane" highway expansion in China, officially opened on December 28, enhancing the capacity and efficiency of the Jing-Tai Expressway in Shandong province [1][2] - The Qi-Ji project spans 23.999 kilometers, connecting key junctions and serving both urban bypass and transit functions, thereby improving transportation infrastructure in the region [1][2] - The project faced multiple challenges, including dense intersection engineering, strict environmental controls, advanced technical standards, and complex construction environments, which were addressed through innovative technology and meticulous management [2] Group 2 - Key technologies and new materials were integrated into the project, including segmental prefabricated construction for the steel-concrete composite tower, ensuring quality and precision [2] - The use of a digital management system and intelligent welding production for the steel box girder enabled smart manufacturing, enhancing construction efficiency and safety [2] - Innovative construction techniques, such as the use of a cantilever support system and lateral pushing process, were applied to navigate complex conditions without interrupting traffic, balancing safety and efficiency [2] Group 3 - The completion of the Qi-Ji project is expected to significantly enhance the overall traffic capacity and efficiency of the Jing-Tai Expressway in Shandong, reinforcing its role as a major north-south transportation artery [2] - The project supports the construction of a strong transportation network in Shandong, contributing to the region's high-quality development and serving as a model for national transportation initiatives [2]