Jintang Bridge, belonging to Zhoushan Islands Link Project, is located in Huibie ocean. The length of the bridge is 21.020km, and the main navigable hole bridge is 1210 meters long. The five-span, double-tower, double-cable plane, steel box girder cable-stayed bridge with a main span of 620 meters is the largest span cable-stayed bridge built in a complex offshore environment of the world.
The cable-tower’s end anchorage of the main navigable hole bridge adopts a combination of steel bracket and steel anchor beam, which successfully solves the cracking problem of the end anchorage area and improves the durability of the structure.
The wireless system was used to test the main beam, while the wired system was used to measure the bridge tower. A total of 140 measurement points were measured in the whole bridge, and 118 measurement points were measured on the bridge floor. The wireless system solved the problem of inconvenient cables when there were many measurement points on the bridge floor. Therefore, the time of moving the test system after each measurement was greatly reduced. The wired system was suitable for the test environment where the wireless signal transmission was blocked. By using this system, there will be no loss of data and out of sync data because of the poor signal, so that it can ensure the reliability of the measured data.
Jintang bridge is the largest and most critical bridge in the whole Zhoushan Islands Link Project. As part of the project, it will become one of the boosters for the development of Marine economy in Zhejiang.
