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Columns are commonly used in water conservancy project to support the upper structure. In order to ensure the stability of the upper structure, it is necessary to monitor the deformation of the column to ensure that the inclination angle of the column is within the allowable range. The non-contact measurement and high-precision point cloud data acquisition was carried out by the total station scanner used waveform digital ranging technology. During the acquisition process, the three-dimensional coordinates of each observation station were calculated by the rear intersection method, and the observation data was unified into a coordinate system. Data registration avoided the transmission of observation errors. This paper proposed a method for calculating the tilt deformation of the column using the point cloud. After collecting the two phases of the point cloud data, the deformation was calculated based on the true pair of points, and the point and surface optimization algorithm was used to reduce the error, and the tilt angle of the column was calculated. Finally, a simulation test of the tilted deformation of the column was designed to verify the accuracy of the deformation calculation method. The test results show that the actual inclination angle is 0°16'49", the calculated inclination angle is 0°16'57", the algorithm error is less than 20', which meets the requirement of deformation monitoring in high-rise structure. Therefore, the deformation calculation method can be applied to the field of column tilt deformation monitoring.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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