潍宿高铁至青岛连接线全面进入上部结构施工阶段

Core Viewpoint - The construction of the Weishui High-speed Railway to Qingdao connection line has entered the upper structure construction phase with all four segments starting box girder erection, indicating significant progress in the project timeline [1][3]. Group 1: Project Progress - The first box girder was erected on August 22, marking the commencement of the upper structure construction phase for the entire line [1]. - As of the end of July, the Qingdao section has completed an investment of 2 billion yuan, achieving 67% of the annual investment plan and 23% of the overall construction progress [5]. Group 2: Construction Techniques and Safety Measures - The project employs a "first piece system" and "three inspections system" to ensure the smooth erection of box girders, coordinating various forces to focus on key tasks [3]. - Digital technologies such as IoT and AI are utilized to assign unique identification numbers to each prefabricated beam, enabling digital control and streamlined operations throughout the production process [3]. - Safety measures include 3D modeling for tracking the lifting trajectory, specialized testing for 900T lifting equipment, and the installation of a collision detection radar system to monitor obstacles within a 30-meter radius [3]. Group 3: Project Overview and Future Impact - The Weishui High-speed Railway to Qingdao connection line spans 108.78 kilometers, with the Qingdao section measuring 53.5 kilometers, designed for a speed of 350 km/h [6]. - The project will connect Qingdao to the Beijing-Shanghai second line, alleviating bottlenecks in southbound transportation and enhancing the national railway's coastal corridor connectivity [6]. - Upon completion, the project is expected to significantly improve high-speed rail access to the Yangtze River Delta and Central China, while also upgrading the Qingdao hub facilities to better meet public transportation needs [6].