📋 Tender Overview
Recently, under the Anxi Bridge in Yuhang District, Hangzhou City, Zhejiang Province, a special doctor - a bridge detection robot - swam all the way from the shore to the center of the river, and then dived into the water. More than ten minutes later, the consultation records of nearby water-washed components such as structural damage, exposed rust of steel bars, and peeling of concrete were uploaded to the computer, and the safety hazards were fully visible. Underwater pile foundations of some cross-river bridges are prone to corrosion and damage, and it is difficult to detect hidden diseases in traditional manual inspections. This year, there is an underwater bridge detection robot during the flood season, and the problem is solved. The underwater bridge detection robot can clearly see the underwater details of the bridge piers and accurately capture hidden diseases. Hua Jinjing, deputy director of the Yuhang District Highway and Transportation Management Service Center, introduced that the high-definition image sonar equipped by the detection robot can play an important role in a muddy water environment. The high-frequency or low-frequency detection mode can be automatically switched according to the distance of the detection to ensure the real-time and clarity of the sonar detection images, and bid farewell to the blind man touching an elephant manual detection. At the same time, the detection robot can operate flexibly in turbid waters and deep pool rapids to avoid the safety risks of manual inspection. After the inspectors get the video and pictures transmitted by the underwater bridge detection robot, they conduct amplification and analysis. They also need to review in places with questions and inadequate shooting. They use the equipments underwater hover function to conduct multiple inspections on the areas with questions to gain the advantage of flood prevention and safety. When we arrived near the Pingyao Bridge in Yuhang District, a drone was conducting a comprehensive and meticulous inspection of key core parts such as the main beam and piers of the bridge according to the pre-set flight route and flight mission, and the collected image data was dynamically transmitted to the digital management platform of the Yuhang Emergency Support Base. Sheng Feng, the maintenance director of Yuhang District Highway and Transportation Management Service Center, said that drones can quickly reach key parts of bridges that are difficult to reach by hand, realize all-round and blind spot data collection, and can complete dozens of kilometers of bridge inspections in a single day, leaving hidden dangers of high-altitude structures nowhere to hide. At the same time, the high-resolution imaging equipment carried by the drone is combined with AI intelligent algorithms to identify disease points more accurately and comprehensively. The backend data system automatically compares historical data, predicts the development trend of the disease, and assists in formulating a one bridge, one policy maintenance plan to achieve the transformation from post-repair to pre-prevention.
