Abstract：The vibration induced by overhead crane during subway maintenance is an important risk on overtrack building vibration serviceability. In order to study vibration influence of the crane load on warehouse structure, a field test was conducted in a metro depot warehouse. Vibration characteristics of crane beam, column bracket and column were obtained. The influence of crane parameters (car body/trolley operation, running velocity and loading capacity) and structural arrangement parameters (column sectional dimension and structural joint) on vibrations were analyzed. The results show that the car body operation along the track is the main source of vibration excitation. The high-frequency vertical vibration attenuates rapidly from brackets to columns. A peak at 25 Hz is observed in column which shows high sensitivity to running velocity and low sensitivity to loading capacity. The column vibration decreases with increased column cross-sectional size, and structural joints can effectively reduce vibration propagation in the main structure.
Key words: Metro depot; overhead crane; frame structure; vibrations acceleration; field measurement
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