科技赋能“智”取深山峡谷 60秒回顾“世界第一高桥”建设历程

Core Viewpoint - The construction of the Huajiang Gorge Bridge, which began in January 2022, showcases innovative technologies and engineering solutions, establishing it as a significant national project and the world's highest bridge upon its completion in September 2025 [1][12]. Group 1: Construction Timeline - The bridge construction commenced in January 2022 [1] - Main cable traction construction started in April 2024 [3] - The bridge deck successfully connected in January 2025 [6] - Load testing was conducted in August 2025 with 96 heavy trucks weighing over 3,300 tons [10] - The bridge was officially opened for traffic on September 28, 2025 [12] Group 2: Technological Innovations - The bridge features the world's first "smart cable" embedded with fiber optics for real-time monitoring of the main cable's health [4][12] - The main cable, consisting of 217 strands each made of 91 wires, incorporates three smart cables for monitoring stress, temperature, and humidity [17] - The innovative "smart cable" system automates humidity control to prevent corrosion, significantly extending the cable's lifespan [17] Group 3: Engineering Breakthroughs - The bridge's saddle structure was transformed from traditional casting to a forged structure, reducing the weight of individual components to 41.3 tons while increasing compressive strength by 44% [19] - The construction team utilized finely ground dolomite as a substitute for fly ash, ensuring the quality of 160,000 cubic meters of concrete while saving approximately 5 million yuan [23]