龙烟市域铁路首梁架设完成，进入上部结构施工阶段

Core Viewpoint - The construction of the Longyan Railway urbanization renovation project in Yantai has entered the superstructure construction phase with the completion of the first pre-cast T-beam installation, marking a significant acceleration in the project timeline [1][3]. Group 1: Project Overview - The Longyan Railway urbanization renovation project is a key railway transportation initiative in Shandong Province, utilizing existing railway capacity to enhance urban connectivity [5]. - The project spans 46.6 kilometers, featuring 10.52 kilometers of new bridges and 9.04 kilometers of tunnels, with bridges and tunnels accounting for 41.6% of the total length [5]. - The total investment for the project is approved at 7.5 billion yuan, with construction expected to commence by the end of September 2024 and completion targeted for the end of September 2027 [5]. Group 2: Technical Innovations - The T-beam installation was executed using a DJ180 type dual-use bridge crane, which integrates lifting, transporting, and erecting functions, enhancing efficiency and safety compared to traditional methods [3]. - The project team has implemented an integrated monitoring system for the bridge crane, allowing for real-time feedback on stability and operational conditions, along with a collision detection radar system to ensure safety during construction [3]. Group 3: Impact on Transportation - Once operational, the railway will provide direct transit between Yantai Station and the airport station, reducing travel time to approximately 25 minutes, and enhancing overall public transport efficiency in the region [5]. - The project aims to improve public transport connectivity for commuters, airport passengers, ferry travelers, and tourists, significantly enhancing the travel experience and addressing transportation challenges, especially during adverse weather conditions [5].