Shaking table tests on 36 telecommunication cabinets were conducted to investigate the seismic damage of cabinets under different earthquake intensities. Artificial ground motions were adopted as the inputs of the shaking table tests according to the standards. Results show that 13 cabinets met the standards

while other tested cabinets failed to meet the standards

and nine of them overturned during the tests. The quality of the telecommunication cabinets was uneven with poor seismic performance

which may pose a potential safety loophole for the normal operation of internet data centers. The acceleration amplification effects of the cabinets were compared and analyzed based on the recorded acceleration time-history curves during the tests. It was found that the acceleration amplification effect at the top of the unqualified cabinets was significantly larger than that of the qualified cabinets; the acceleration amplification effect at the middle of the cabinets was basically the same. The seismic fragility model of the telecommunication cabinets was developed based on the shaking table test data of 36 cabinets in this study. Peak floor acceleration was selected as the engineering demand parameter and the damage state of the cabinets was defined as hard to recover and loss of functionality. Test results show that when the peak floor acceleration was 1.118 1 g

the exceedance probability corresponding to the damage state of loss of functionality of the telecommunication cabinets was 50%. By comparing the results with the existing fragility curves in the literature

it was found that the dimensions of the telecommunication cabinets had little influence on their seismic fragility. The cabinets were more prone to be damaged and easier to lose functionality under bidirectional seismic excitations than under unidirectional seismic excitations.