Mechanical property of uplift-restraint friction pendulum bearing Support with Cu-stainless interfaces
Li Xiongyan1 Xue Suduo 1 Pan Kejun 2
Author information+
1. The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing100124, China 2. Homedale Architects, Beijing 100045, China
A new type of friction pendulum bearing（FPB） with Cu-stainless steel interfaces and uplift-restraint device, which is enable to overcome the shortages such as low pressure capability for the TEFLON-stainless steel interfaces and unable to control uplift of the in-using FPB, is introduced in the paper. The mechanical property of the new bearing was discussed as well. Firstly, the structural system of the bearing was illustrated, and its theoretical model was developed. Meanwhile, a loading capacity 3000kN FPB was manufactured for mechanical property testing. The experiment focused on hysteretic properties and frictional coefficient, and the influence of the pressure load on the bearing and the sliding velocity of the slider on which was examined in detail. It is shown that the hysteretic loop of the bearing under harmonic excitation shares the parallelogram shape, which is same as the in-using FPB, and the average frictional coefficient betweens 0.096 to 0.109. In addition, there is a good agreement of the hysteretic loops between the experimental result and theoretical model. Therefore, it verified the reasonable of the mechanical model.
Li Xiongyan Xue Suduo Pan Kejun .
Mechanical property of uplift-restraint friction pendulum bearing Support with Cu-stainless interfaces[J]. Journal of Vibration and Shock, 2013, 32(6): 84-89
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