An Innovative Hysteretic Damper with Adaptive Post-Elastic Stiffness for Seismic Protection of Bridges

Date

2013-08-26

Author

Dicleli, Murat

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A new hysteretic damper for seismic protection of highway bridges is presented. The Multi-directional Torsional Hysteretic Damper (MTHD) works based on torsional yielding of steel cylindrical cores. The device demonstrates a hyperbolic post-elastic stiffness as a result of its special working mechanism which produces this geometric hardening effect. The post-elastic stiffness was found to be effective in limiting the lateral displacement of the seismic-isolated bridge decks in near-fault. Results of nonlinear time history analyses revealed the adaptive behavior of the device which is a result of this gradual hardening feature, such that at lower displacements in Design-Basis Earthquake (DBE), force levels are close to a regular system while at highest levels of displacements in Maximum Considered Earthquake (MCE), the device hardens to make the substructure yield and limit deck's displacement. © 2015 IOS Press and the authors. All rights reserved.

Subject Keywords

design-basis earthquake, Maximum considered earthquake, Seismic isolated bridges

URI

https://hdl.handle.net/11511/80231
https://www.scopus.com/record/display.uri?eid=2-s2.0-85015224520&origin=resultslist&sort=plf-f&src=s&st1=&st2=&sid=1e2fb0bbb4fdca00d4466c7442b2b0c8&sot=b&sdt=b&sl=118&s=TITLE-ABS-KEY+%28An+Innovative+Hysteretic+Damper+with+Adaptive+Post-Elastic+Stiffness+for+Seismic+Protection+of+Bridges%29&relpos=0&citeCnt=0&searchTerm=

Conference Name

Bridge Conference, Bridge Engineering Association(2013)

Collections

Department of Engineering Sciences, Conference / Seminar

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Citation Formats

M. Dicleli, “An Innovative Hysteretic Damper with Adaptive Post-Elastic Stiffness for Seismic Protection of Bridges,” presented at the Bridge Conference, Bridge Engineering Association(2013), New-York, Amerika, 2013, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/80231.