Behavior and Performance of Structures Equipped With ADAS & TADAS Dampers (a Comparison with Conventional Structures)

Abstract eng:
Metallic dampers such as Added Damping and Stiffness (ADAS) and Triangular Added Damping and Stiffness (TADAS) are among energy dissipating devices that have been using in design of the new generations of earthquake-resisting buildings. In this paper, the behavior and performance of steel structures equipped with ADAS and TADAS metallic dampers are investigated and compared with conventional earthquake-resisting steel structures such as CBF, CHEVRON and EBF systems. For this purpose, ground acceleration records of the El Centro, Hachinohe, San Fernando, and Taft earthquakes are used as the disturbing ground motion in a series of numerical simulations of a multi-story steel building. The numerical simulations were carried out by using DRAIN-2DX program and the nonlinear dynamical behavior of the different systems was compared with each other. Results show suitable behavior of systems equipped with ADAS and TADAS metallic dampers and main damages are occurred in dampers keeping main structure safe

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