Abstract A computational study was conducted to examine the seismic performance of steel moment‐resisting frames (MRFs) provided with chevron concentric braces. Such systems are widely used for buildings in Japan. Nonlinear finite‐element‐method models were validated against data and observations from previously tested chevron‐braced MRF specimens. The conduct a parametric understand how cyclic...

Steel bracing members are widely used in steel structures to reduce lateral displacement and dissipate energy during earthquake motions. Concentric steel bracing provide an excellent approach for strengthening and stiffening steel buildings. Using these braces the designer can hardly adjust the stiffness together with ductility as needed because of buckling of braces in compression. In this stu...

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...

This paper presents a simplified approach for the design of semi-continuous composite beams in braced frames, where specific attention is given to the effect of joint rotational stiffness. A simple composite beam model is proposed incorporating the effects of semi-rigid end connections and the non-prismatic properties of a 'cracked' steel-concrete beam. This beam model is extended to a sub-fram...

An experimental campaign on joints of x-braced frames is presented. Tests are performed on strap-gusset joints and lower and upper corner joints. Many different phenomena and failure modes are observed in these tests. However, it is possible to see that only one failure mode can be accepted if a good seismic performance of the frame needs to be guaranteed: the net section failure of the diagona...

In many regions of the world, a conventional low-ductility concentrically braced frame (CBF) is commonly chosen as seismic force resisting system. The energy dissipation not restricted to yielding and buckling braces, would be required for ductile frames; rather, assumed occur through localised friction in connections, well limited member yielding. objective this study was characterize by means...