Core Points - The Changtai Yangtze River Bridge, the world's largest span cable-stayed bridge, is nearing completion with expected operational status by August, significantly reducing travel time between Changzhou and Taizhou from 1 hour and 20 minutes to approximately 20 minutes, thus promoting coordinated development of cross-river urban clusters [2][3] Group 1: Construction Innovations - The bridge's construction has involved innovative techniques, such as the use of intelligent soil excavation robots, which have increased efficiency from 40 cubic meters per hour with six workers to 200 cubic meters per hour with one operator, allowing for a two-month acceleration in the sinking of the main tower's foundation [4][5] - The construction of the main tower has utilized a new flexible manufacturing production line for rebar, achieving automated production and mechanical shaping, with a production efficiency of eight units per hour and millimeter-level precision [5][6] Group 2: Advanced Materials and Techniques - The asphalt paving for the bridge has employed eight different paving structures and systems to address challenges posed by its large span and asymmetric loads, utilizing domestically produced materials to reduce reliance on imports [6] - The total area of asphalt paving on the bridge's upper and lower steel deck exceeds 250,000 square meters, completed in just 24 effective working days, equivalent to over 30 standard football fields [6]

Core Viewpoint - The Changtai Yangtze River Bridge, the world's largest span cable-stayed bridge, is nearing completion with innovative construction techniques that significantly enhance efficiency and safety, expected to reduce travel time between Changzhou and Taizhou from 1 hour and 20 minutes to approximately 20 minutes [1]. Group 1: Construction Innovations - The bridge's main span of 1208 meters necessitated the use of a unique underwater foundation construction method, specifically a steel caisson, due to the limitations of traditional drilling techniques [2]. - The construction team developed an intelligent soil extraction robot that increased soil removal efficiency from 40 cubic meters per hour with six workers to 200 cubic meters per hour with just one operator, allowing for a two-month acceleration in the caisson's installation [3]. - A new flexible manufacturing production line for rebar was created, enabling automated production and achieving a precision of millimeter-level, with a production efficiency of eight units per hour [3][4]. Group 2: Construction Efficiency - The main tower of the bridge is constructed using a modular assembly method, allowing it to rise at a rate of 1.2 meters per day while reducing high-altitude labor by over 60%, thus enhancing both efficiency and safety [4]. - The asphalt paving for the bridge faced challenges due to its large span and dual-layer design, leading to the adoption of eight different paving structures and systems tailored to various driving areas [5]. - The total area of asphalt paving on the bridge's upper and lower steel surfaces exceeds 250,000 square meters, completed in just 24 effective working days, equivalent to the area of over 30 standard football fields [5].