Different expressions have been developed to determine damping of structures based on various hysteretic models and ductility levels. Since Slenderness ratio is an important parameter on the hysteretic behavior of special concentrically- braced frames (SCBF), in this paper new expressions for determination of damping of such frames are developed based on slenderness ratio and ductility. Two typ...

Abstract This paper investigates the effect of inherent damping modeling on computed seismic response and collapse performance selected seismically isolated buildings. The analyzed buildings were designed by procedures ASCE/SEI 7–16 standard. structure is a six‐story perimeter frame building with special moment resisting frames or concentrically braced (SCBF) for location in California. Three d...

In this study, the performance of triangular added damping and stiffness (TADAS) dampers combined with curved dampers (Curved-TADAS damper) is evaluated in moment resisting steel frame (MRSF). These dampers are passive and install in the beam-column connection region. Variable parameters of this study involve the width of curved damper (50, 75 and 100 mm), the thickness of TADAS damper (5 and 1...

Heavy economic losses and human casualties caused by destructive earthquakes around the world clearly show the need for a systematic approach for large scale damage detection of various types of existing structures. That could provide the proper means for the decision makers for any rehabilitation plans. The aim of this study is to present an innovative method for investigating the seismic vuln...

Nowadays, due to environmental changes, the condition of buildings can be in danger. In order protect performance existing buildings, it is important investigate seismic behaviour building structure subjected earthquake excitation. addition, study advanced level ductile design recommended by current codes. immediate future, lateral load resistance needs evaluated precisely. For purpose analyzin...

The work presented in this paper investigates the strength of moment-resisiting apex brackets cold-formed steel portal frames. results two previously reported full-scale frame tests, where frames failed through buckling bracket, were used to validate a finite element model that included material nonlinearity, geometric imperfections, and bolt bearing behaviour. From test as well results, import...