Abstract
Isolation bearings and dampers are often installed between piers and superstructures to reduce the seismic responses of bridges under large earthquakes. This paper presents a novel steel damper for bridges. The damper employs steel plates as energy dissipation components, and adopts a vertical free mechanism to achieve a large deformation capacity. Quasi-static tests using displacement-controlled cyclic loading and numerical analyses using a finite element program called ABAQUS are conducted to investigate the behavior of the damper, and a design methodology is proposed based on the tests and numerical analyses. Major conclusions obtained from this study are as follows: (1) the new dampers have stable hysteresis behavior under large displacements; (2) finite element analyses are able to simulate the behavior of the damper with satisfactory accuracy; and (3) simplified design methodology of the damper is effective.
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Supported by: Natural Science Foundation of China under Grant Nos. 51178250 and 51261120377 and Tsinghua University of China under Grant No. 2010Z01001
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Pan, P., Yan, H., Wang, T. et al. Development of steel dampers for bridges to allow large displacement through a vertical free mechanism. Earthq. Eng. Eng. Vib. 13, 375–388 (2014). https://doi.org/10.1007/s11803-014-0249-6
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DOI: https://doi.org/10.1007/s11803-014-0249-6