Core Points - The Yilai Expressway Chai Buxi Grand Bridge, the world's widest double-sided I-beam composite cable-stayed bridge, completed its load test on October 31, marking it as Hubei Province's first cable-stayed bridge built at the same level for both expressway and provincial road [1][2] - The bridge is a key control project in the Yichang section of the Yilai Expressway, which is part of Hubei's highway network planning [1] Summary by Sections Bridge Specifications - The main bridge spans 904 meters with a main span of 480 meters and a width of 44.5 meters, designed for "two-way four-lane expressway + two-way two-lane secondary road" standards [1] - The project is funded by Hubei Communications Investment Group and constructed by Yichang Construction Company, with China Communications Second Highway Engineering Bureau as the contractor [1] Load Testing - The load test serves as the "ultimate health check" before the bridge opens, simulating various driving conditions to assess structural safety and load-bearing capacity [1] - The static load test involved 19 test conditions with a heavy vehicle fleet of 35-ton three-axle trucks, achieving a maximum load of 1715 tons with 49 vehicles [1] - Over 190 strain measurement points, 50 displacement measurement points, and 40 cable force measurement points were set up to monitor key indicators in real-time [1] Dynamic Load Testing - The dynamic load test included 15 conditions, covering pulsating tests, unobstructed driving, obstructed driving, and braking tests to gather critical response data under dynamic loads [2] - All tests were conducted at night to minimize temperature fluctuations affecting accuracy, with technical staff working in shifts to ensure data reliability [2] Economic and Social Impact - The completion of the Yilai Expressway will enhance the highway network in the Wuling Mountain area of Hubei Province, significantly benefiting tourism, supporting the development of revolutionary old areas, and promoting economic cooperation and ethnic unity in the region [2]

Core Points - The world's highest bridge, the Huajiang Grand Canyon Bridge, is undergoing a load test, which is a critical step before its opening to traffic [5] - The load test consists of static and dynamic load tests to verify the bridge's structural safety and load-bearing capacity [5] - On August 25, the final phase of the static load test was conducted with 96 test trucks, each weighing 35 tons, simulating heavy traffic conditions [5] - The total load on the bridge reached approximately 3360 tons during the test, assessing key structural components under stress [5] - Previous tests with 18 and 48 trucks also showed results within calculated limits, indicating the bridge's readiness for operation [5]

Core Viewpoint - The load testing of the world's highest bridge, the Huajiang Grand Canyon Bridge, has officially commenced, marking a significant milestone in its construction and safety verification process [1][2]. Group 1: Project Overview - The Huajiang Grand Canyon Bridge is a key control project of the Guizhou Liuzhi-Anlong Expressway, located in Anshun City, Guizhou Province, spanning the Beipan River Huajiang section [1]. - The bridge has a total length of 2,890 meters and a main span of 1,420 meters, making it the highest bridge in the world at a height of 625 meters above the water surface [1]. Group 2: Load Testing Details - The load testing consists of three phases: empty load test, static load test, and dynamic load test, and will last for four days [1]. - A total of 15 test conditions will be arranged, with over 400 sensors deployed to monitor the deformation and stress of the bridge's main tower, main beam, and main cable under static load [1]. Group 3: Economic Impact - Once operational, the bridge will significantly reduce travel time, cutting the journey from two hours to just two minutes, and the travel time from Liuzhi Special District to Anlong County from three hours to 1.5 hours [2]. - This improvement is expected to play a crucial role in boosting economic development in Guizhou Province, facilitating resource connectivity and promoting local economic growth [2].

Group 1 - The Huajiang Grand Canyon Bridge, which is under construction, has officially started its load testing, marking a significant milestone in its development [1][2] - The bridge is part of the Liuzhi to Anlong Expressway and will be the highest bridge in the world upon completion, with a total length of 2890 meters and a main span of 1420 meters, standing 625 meters above the water surface [1] - The load testing process will last for four days and includes static and dynamic load tests, with a maximum load of 3300 tons during the static tests [1] Group 2 - The construction of the Huajiang Grand Canyon Bridge began in January 2022 and is expected to be completed and operational by September 2023, which will significantly enhance regional connectivity and promote local economic development [2]