Workflow
世界第一高桥有何非凡之处
Zhong Guo Xin Wen Wang·2025-09-16 06:23

Core Viewpoint - The Huajiang Grand Canyon Bridge in Guizhou, set to open in September 2025, is the world's highest bridge, with a total length of 2890 meters and a deck height of 625 meters above the water surface, showcasing remarkable engineering and technological advancements [1][3]. Group 1: Engineering Challenges and Innovations - The bridge faces significant challenges due to the complex wind environment in the canyon, where wind speeds can reach up to level 14, affecting both construction safety and vehicle stability post-completion [2][3]. - To address these challenges, the engineering team implemented a 24-hour Doppler laser radar wind measurement system, which acts as a "weather eye" for the bridge, ensuring safety during construction [5]. - Innovative design features include a streamlined steel truss and a central stabilizing plate, which reduce wind load by 30% and can dissipate up to 90% of lateral wind vibrations, enhancing the bridge's stability [5][6]. Group 2: Structural Features and Materials - The bridge's main cable, consisting of 217 strands made from high-strength steel wires, totals a length of 93,000 kilometers, equivalent to wrapping around the Earth's equator more than twice [6]. - The bridge incorporates a "smart cable" system that monitors structural integrity in real-time, along with a dehumidification system to prevent cable corrosion, thereby extending its lifespan [6]. - The construction utilized a fourth-generation smart cable hoisting system, allowing for precise and stable assembly of the steel trusses at heights exceeding 600 meters [6]. Group 3: Tourism and Economic Impact - The bridge is part of a broader initiative to enhance tourism in Guizhou, reducing travel time between two points from 2 hours to just 2 minutes, transforming the area into an "aerial scenic spot" [8]. - Future attractions include extreme sports like bungee jumping and paragliding, as well as amenities such as a transparent observation elevator and a café, which are expected to draw significant tourist traffic [9]. - The bridge has already attracted visitors even before its official opening, indicating strong interest and potential economic benefits for local businesses [9].