虎渡溪岷江特大桥位于眉山市青神县，预计于2026年10月建成通车，届时青神县至天府新区车程将 由原来的约115分钟缩短至约40分钟。该大桥在省内首创钢壳－混凝土组合，实现"工业化制造、装配化 施工"转变。项目技术负责人介绍，传统超高混凝土索塔施工，需要50多名工人在高空绑扎钢筋、拼装 模板，施工效率低且安全风险高。新技术将桥塔80%工作量转移至制造工厂完成，现场仅需 10人即可 完成"拼积木式"高空吊装施工，施工效率较传统工艺提升了30%，7天就能完成一个标准节段建造。 虎渡溪岷江特大桥地处岷江流域生态敏感区，毗邻"天府粮仓"核心农田，如何平衡工程建设与生态 保护，成为项目团队面临的关键难题。钢壳－混凝土组合索塔工业化智能建造技术，恰如一道守护生态 的钢壳盾——相较于常规混凝土桥塔施工，创新方案优化减少现场混凝土浇筑量超1.1万立方米，承载 性能提高近50%。以工厂智能制造取代现场传统施工，施工扬尘、噪声及废水排放减少80%以上，最大 限度降低工程建设对岷江水体、周边良田及生态环境的影响。 天眉乐高速全长94.496公里，采用双向八车道+六车道高速公路标准建设，设计时速为120公里，项 目总投资概算290.7 ...

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]