Core Points - The construction of the Weishui High-speed Railway to Qingdao connection line has reached a significant milestone with the installation of the first box girder on August 22, marking the completion of girder erection across the entire line [1] - The project includes four beam production yards responsible for the prefabrication and erection of 867 single-line box girders and 1621 double-line box girders [4] - The entire project is expected to be operational by the end of June 2028, significantly enhancing passenger travel and economic exchanges between the Jiaodong Peninsula and the Yangtze River Delta [13] Construction Details - The first box girder measures 32.6 meters in length and weighs 760 tons, with strict adherence to quality control measures during its production and installation [7] - The construction teams have implemented a 24-hour continuous operation schedule to overcome challenges such as safety risks near operational lines and limited working hours [9] - Advanced technologies, including IoT and AI, have been utilized to ensure the quality and efficiency of the box girder production process, with each girder assigned a unique identification number for digital tracking [7][10] Safety Measures - To ensure the safety of the girder erection process, comprehensive feasibility studies and three-dimensional modeling have been conducted to optimize the lifting and transportation of girders [10] - Additional safety features, such as a monitoring system for the bridge erection machine and collision detection radar, have been integrated to enhance operational safety [10]

Core Points - The successful restoration of power supply for four 110kV lines, including the 110kV Zhuangtang Line, marks a significant milestone in the construction of the Weishui High-speed Railway to Qingdao connection line [1][3] - The completion of the power line relocation facilitates the construction of continuous beams and other related works, accelerating the overall project timeline [1][5] Group 1 - The 110kV Zhuangtang Line, Zhuangjiang Line, Zhuangjiao Line, and Zhuangwang Line required simultaneous power outages for relocation, presenting significant coordination challenges [3] - The project team, including China Railway 10th Bureau, optimized construction plans and efficiently completed the tasks within 7 days, including the erection of 10 new towers and the installation of 32,800 meters of wire [3] - The 220kV Langkai Line and Island Lang II Line, as critical backbone lines, were also relocated to facilitate bridge construction, completing tasks in 10 days [5] Group 2 - The Weishui High-speed Railway to Qingdao connection line spans 108.78 kilometers with a design speed of 350 km/h, featuring four stations [5] - This connection line is part of the national "Eight Vertical and Eight Horizontal" high-speed rail network, enhancing the rapid transit capabilities between Qingdao and other regions [5]