Research on Metallic Damper for Bridge in Transverse Direction

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (21) : 96-101.

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Research on Metallic Damper for Bridge in Transverse Direction

SHEN Xing , NI Xiao-bo , YE Ai-jun

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Abstract

Based on seismic performance demand of bridge in transverse direction and current research work on metallic damper, a new type of metallic damper which can be used in transverse direction of bridge is now proposed firstly. Then, mechanic performance is explained and an optimized design method for metallic damper is introduced. Finally, a quasi-static test is carried out on two samples of designed metallic dampers. The results depict that this new type of metallic damper possesses a good property of hysteretic energy dissipation. And hysteretic model can adopt equivalent bilinear model. Moreover, the metallic damper presents large displacement capacity (drift ratio is larger than 50%) and can adapt to the complex contact condition during the ground motion fairly. In addition, different triangular steel plates exhibit perfect synchronism substantially.

Key words

metallic damper / transverse seismic demand / transverse direction of bridge / displacement capacity / hysteretic energy

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SHEN Xing;NI Xiao-bo;YE Ai-jun. Research on Metallic Damper for Bridge in Transverse Direction[J]. Journal of Vibration and Shock, 2014, 33(21): 96-101