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http://dx.doi.org/10.14346/JKOSOS.2016.31.6.52

Performance Test and Numerical Model Development of Restoring Viscous Damper for X-type Damper System  

Kim, David (Department of Architectural Engineering, Dongguk University)
Park, Jangho (Department of Civil System Engineering, Ajou University)
Ok, Seung-Yong (Department of Civil, Safety & Environmental Engineering, Hankyong National University)
Park, Wonsuk (Department of Civil Engineering, Mokpo National University)
Publication Information
Journal of the Korean Society of Safety / v.31, no.6, 2016 , pp. 52-57 More about this Journal
Abstract
In this study, a restoring viscous damper is introduced for X-type damper system which is designed for the seismic response control of large spatial structures. A nonlinear numerical model for its behavior is developed using the result of dynamic loading tests. The X-type damper system is composed of restoring viscous dampers and connecting devices such as adjustable wire bracing, where the damping capacity of the system is controllable by changing the number of the dampers. The restoring viscous damper is devised to exert main damping force in tension direction, which is effective to prevent the buckling of bracing subjected to compressive axial force. To evaluate the performance of the proposed damper, dynamic cyclic loading tests are performed by using manufactured dampers at full scale. In order to construct the numerical model of the damper system, its model parameters are first identified using a nonlinear curve fitting method with the test data. The numerical simulations are then performed to validate the accuracy of the numerical model in comparison with the experimental test results. It is expected that the proposed system is effectively applicable to various building structures for seismic performance enhancement.
Keywords
restoring viscous damper; dynamic cyclic loading test; seismic response control; X-type damper system;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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