新华鲜报丨“横竖”都是世界第一！贵州花江峡谷大桥正式通车

Core Viewpoint - The completion of the Huajiang Grand Canyon Bridge marks a significant achievement in bridge construction, showcasing China's innovative capabilities and setting new world records in height and span for mountain bridges [1][2][4]. Group 1: Bridge Specifications and Achievements - The Huajiang Grand Canyon Bridge has a height of 625 meters, making it the tallest bridge in the world, surpassing the Beipan River First Bridge by nearly 60 meters [1]. - The main span of the bridge is 1420 meters, which is the longest span for mountain bridges globally [1]. - The total length of the bridge is 2890 meters, significantly reducing travel time across the canyon from over two hours to approximately two minutes [1]. Group 2: Construction and Innovation - The bridge was constructed in just over three years, demonstrating the "China speed" in infrastructure development [1]. - The construction involved 93 segments of steel truss beams, weighing a total of 21,000 tons, with precise assembly achieved at heights exceeding 600 meters [1]. - The construction team utilized a "smart cable hoisting system" to complete the installation in 73 days and finished the bridge deck in just over a month [1][2]. Group 3: Challenges and Solutions - The construction faced significant challenges due to strong winds in the canyon, with wind speeds reaching up to level 14, equivalent to a strong typhoon [1]. - To address these challenges, the team conducted physical wind tunnel tests and implemented a Doppler laser radar wind measurement system for accurate meteorological data collection [2]. Group 4: Regional Impact and Recognition - The bridge is part of a broader network of over 32,000 bridges in Guizhou, which has become a leader in bridge construction, holding multiple records for the highest bridges in the world [4]. - Guizhou has received the Gustave Lindenthal Award, often referred to as the Nobel Prize of bridge engineering, four times, highlighting its prominence in the field [4].