CRHIC(SH:600528) Yang Zi Wan Bao Wang·2025-12-29 14:45Core Viewpoint - The successful installation of the first steel box girder for the Xiamen section of the Xiamen-Jinmen Bridge marks a significant achievement in the construction of large-scale bridge projects in China, showcasing advanced technology and meticulous management [1][3]. Group 1: Project Overview - The Xiamen section of the Xiamen-Jinmen Bridge spans approximately 19.6 kilometers and consists of 92 large segment steel box girders [2]. - The installed steel box girder measures 142.5 meters in length, 36 meters in width, and weighs 4,109.1 tons, equivalent to the weight of 2,100 family cars, and covers an area comparable to 12 standard basketball courts [2][3]. Group 2: Construction Challenges and Innovations - The project faced significant challenges in manufacturing, transportation, and installation due to the size and weight of the components, requiring a comprehensive support system from production to installation [2]. - A modular approach was adopted in the manufacturing phase, utilizing a "parts → plate unit → small segment → large segment" model, ensuring high precision in production with errors controlled to the millimeter level [3]. - Advanced technologies such as intelligent welding robots and a three-dimensional jack system were employed, achieving a 99% qualification rate for weld inspections [3]. Group 3: Future Implications - The completed bridge will serve as a crucial link between Xiamen Island and Dazhong Island, facilitating direct access to Jinmen and enhancing the transportation network with the Xiang'an Airport and Xiamen-Jinmen ferry route [3]. - The bridge is expected to play a vital role in promoting cross-strait integration and development, contributing to the establishment of a transportation framework that supports the construction of a community of shared future across the strait [3].