津轨道交通Z4线一期北段开通 打造串起滨海新区南北“大动脉”

Core Points - The opening of the northern section of the Z4 line in Tianjin marks a significant milestone in enhancing the city's transportation infrastructure and regional integration [1] - The Z4 line is a key project in Tianjin's "14th Five-Year Plan," aimed at improving the modern rail transit system in the Binhai New Area [1] Summary by Sections Project Overview - The Z4 line's northern section spans 23.738 kilometers and includes 10 stations, significantly reducing travel time from Zhaizhang Station to Beitang Station to 27 minutes [1] - The line is expected to transform the transportation dynamics between the old urban area of Hangu, the China-Singapore Tianjin Eco-City, and the Tianjin Economic Development Area [1] Technical Achievements - The construction faced multiple technical challenges, including the use of a 160-meter main span continuous beam structure over the Yongding River and the first domestic use of a wave-shaped steel web in a rail transit bridge [1] - The trains can operate at a maximum speed of 120 kilometers per hour, featuring high airtightness car bodies and noise reduction technologies for enhanced passenger comfort [1] Future Developments - The Z4 line will eventually connect with other lines such as B1 and Z2, facilitating seamless integration with intercity railways and other metro lines, thereby improving overall transportation efficiency [2] - The line will also link to the Beijing-Tianjin Intercity Railway and the Tianjin-Weifang High-Speed Railway, creating a more efficient comprehensive transportation system [2]