Fast damage identification method of tower crane steel structure based on feature mapping plane
YANG Rui1, SONG Shijun1, SONG Lianyu2, AN Zenghui1, ZANG Hongyuan1, ZHANG Huimin3
1.College of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China;
2.Shandong Fuyou Huiming Measurement and Control Equipment Co., Ltd., Jinan 250101, China;
3.College of Mechanical and Civil Engineering, Taishan College, Tai’an 271000, China
Abstract:A fast-discriminating method of tower crane damage state was proposed for effectively improving the online monitoring efficiency of tower crane running state. The tower crane structures under the combination of different damage positions of the tower were constructed, and the spatial position data sets of the tower top when the tower crane rotates once under the condition of constant load were collected. The spatial position data were fitted with the sum of 3 sinusoidal functions, and the amplitude, frequency, phase and other feature vector sets of the sine function obtained by fitting were extracted. The feature vector sets in the X-axis and Y-axis directions under each damage state were used as triangle vertices to construct the feature plane set. The characteristic plane in good condition was taken as the reference plane, and the Angle between other planes and the reference plane in the direction of two coordinate axes was calculated. Angle values were used to construct the point cloud images of each state in the plane, which was used as the basis for damage state evaluation. The mapping relationship between damage state and single feature point established in this paper provides a fast and reliable basis for tower crane state identification.
Key words: Tower crane; Damage state discrimination; Angle; Feature mapping plane
杨蕊1,宋世军1,宋连玉2,安增辉1,臧泓源1,张会敏3. 基于特征映射平面的塔机塔身钢结构损伤快速识别方法[J]. 振动与冲击, 2022, 41(23): 315-321.
YANG Rui1, SONG Shijun1, SONG Lianyu2, AN Zenghui1, ZANG Hongyuan1, ZHANG Huimin3. Fast damage identification method of tower crane steel structure based on feature mapping plane. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 315-321.
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