The Shenzhen-Zhongshan Channel has started bridge load testing and will be ready for traffic in June

According to news on April 14, the Shenzhen-Zhongshan Bridge has successfully entered the bridge load test stage. Next, a group of 136 large trucks with a total weight of about 5,000 tons will conduct "physical examinations" for the Zhongshan Bridge, Lingdingyang Bridge, and non-navigable bridges in the Shenzhen-Zhongshan Channel. The load test of the Shenzhen-Zhongshan Channel Bridge Engineering will continue until April 17. .

#This site learned from the official that the load test is a key link that must be experienced before the bridge is opened to traffic, and is divided into static load test and dynamic load test. By equivalently simulating the load conditions after opening to traffic, the response data of various parts of the bridge (such as main beams, main towers, cables) are tested on-site to determine whether the bridge's load-bearing capacity meets the design requirements and relevant specification requirements, and provide a basis for the future Long-term health monitoring provides initial data, and also provides scientific basis and support for future maintenance and management decisions.

The total length of the Shenzhen-Zhongshan Channel bridge project is about 17 kilometers,including the Zhongshan Bridge, a cable-stayed bridge, the Lingdingyang Bridge, the world's largest fully offshore offshore steel box girder suspension bridge, and a non-navigable approach bridge. In order to complete the load test scientifically and efficiently, the project selected 4 representative projects, including 60-meter span concrete beam, 110-meter span steel box girder, 580-meter main span Zhongshan Bridge, and 1,666-meter main span Lingdingyang Bridge. The test was carried out at various points, covering all structural types of offshore bridges.

In the static load test of the Zhongshan Bridge, 64 large trucks will be arranged according to the positions calculated by the engineers in advance, and parked in an 8x8 square array in the bridge. The engineers will start from the sensors installed in advance. Read data from the device to detect bridge position movement and stress conditions.

In this case, engineers will arrange a test in which the car goes back and forth on the bridge deck to test the dynamic parameters, and simulates road unevenness to set up a jump test to test the car's impact coefficient.

The Shenzhen-Zhongshan Corridor is a world-class cross-sea cluster project of "bridges, islands, tunnels, and underwater interconnections" with a total length of approximately 24 kilometers. At present, the mechanical and electrical, traffic safety, road surface, housing construction and ancillary projects of the Shenzhen-Zhongshan Corridor are being fully advanced to prepare for the conditions for opening to traffic in June. After the project is completed and opened to traffic, the drive from Shenzhen to Zhongshan will be shortened from about 2 hours currently to less than 30 minutes.

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