Seismic design methodology for friction damped braced frames |
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| Authors: | Robert Levy Eduard Marianchik Avigdor Rutenberg Fred Segal |
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| Abstract: | This paper is concerned with the design of steel frames using friction damped slotted bolted connections (SBCs) in the diagonal braces. A dynamic model is developed to describe the behaviour of a single‐degree‐of‐freedom (SDOF) steel frame that uses bilinear hysteretic behaviour for the damper. This model is generalized to MDOF systems. A novel algorithm for displacement reversal in the transition from slip to stick is presented. It uses numerical noise for its success. A design procedure that attains the stiffness of the individual braces and their elongation at the threshold of activation is then applied to a 10‐storey steel frame. This design process is a two‐phase iterative procedure that converges quite fast. Copyright © 2000 John Wiley & Sons, Ltd. |
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| Keywords: | steel structures earthquake engineering friction dampers braced frames bilinear hysteresis |
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