 Static deformation measurement of large power tower Measurement purpose Deformation of key points of a large power tower (10m in length) is measured during static loading, which provides data support for fault inspection and structural design. Inspection scheme overview Marking points are pasted on the power tower as observation and analysis points. Arrange marking points around them as global fixed points. Under each working condition, the SLR camera takes pictures from various angles to obtain the 3D coordinates of the marking points, and aligns the coordinates through the global fixed points, and then analyses the 3D deformation of the marking points. Inspection process （1）Sticking marking points on the surface of specimens and arrange fixed points around them; （2）In the initial state, the camera takes pictures from all angles to obtain the 3D coordinates of the marking points; （3）After loading, the camera takes pictures from all angles and obtains the 3D coordinates of the deformed marking points; （4）Repeat steps (3) until the experiment is completed; （5）Analysis of 3D Deformation of Marking Points. Data analysis The trend of 3D deformation of marker points can be visualized by chromatogram. Arrows represent the direction of deformation, colors represent the size of deformation, and 3D data of all points can be output for detailed analysis. |