Spatial Parameters Identification of Long Span Suspension Bridge Based on 3D Laser Scanning
To realize the spatial parameter identification of a large-span suspension bridge,3D laser scanning technology is used to acquire point cloud data of the bridge.Using the measurability of the point cloud model,the spatial parameter information of the key bridge components was extracted and obtained.The results show that the measured dimensional parameters of the bridge components are reliable,but some of the parameters are affected by the vibration of the bridge with relatively large errors.At the same time,through the comparison of the main girder,the main cable line shape and the design line shape obtained based on the point cloud,it can be judged that the long-span suspension bridge is in a safe working condition.Compared with traditional inspection technology,3D laser scanning technology can achieve accurate and efficient identification of the spatial parameters of the long-span suspension bridge.Finally,the key problem to be solved in the future is how to consider the influence of vibration on the measurement results of the long-span suspension bridge.
万方数据
维普
