深江铁路洪奇沥水道公铁大桥主塔全部封顶

Core Viewpoint - The completion of the main towers of the Hongqili Waterway Public-Railway Bridge marks a significant milestone in the construction of the Shenjiang Railway, a key transportation project in the Guangdong-Hong Kong-Macao Greater Bay Area [1][3]. Group 1: Project Overview - The Shenjiang Railway is a high-speed railway in Guangdong Province, connecting Shenzhen to Jiangmen, with a total length of approximately 116 kilometers [3]. - The Hongqili Waterway Public-Railway Bridge is a critical component of the Shenjiang Railway, featuring a dual-tower, dual-cable-stayed design and advanced construction techniques [3][4]. Group 2: Construction Details - The main towers, numbered 49 and 50, are designed in an "H" shape and constructed using C60 high-strength concrete, completed in 47 segments [4]. - Innovative construction methods, including the use of the KTY5000 rotary drill, significantly improved the quality and efficiency of the foundation work, achieving a record completion time for single piles [4]. Group 3: Technological Innovations - The project team implemented a dual admixture technique using fly ash and mineral powder to enhance the performance of the concrete, ensuring high quality under coastal environmental conditions [4]. - Advanced technologies such as intelligent production of concrete and meticulous quality control were employed to meet the engineering standards for the main tower structures [4]. Group 4: Economic and Regional Impact - Upon completion, the bridge will facilitate a half-hour high-speed rail connection between Shenzhen Qianhai and Guangzhou Nansha, and a one-hour direct link between Shenzhen and Jiangmen, promoting regional integration and development [5].