Numerical simulation of the cyclic‐loading behavior of steel chevron‐braced moment‐resisting frames

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‐loading MRFs may be affected by torsional translational restraint beam intersected braces, relative strength respect type bracing connection. results suggest that lack braces not detrimental global hysteretic behavior structural system, although out‐of‐plane buckling can cause severe inelastic lateral‐torsional deformation beam. moment delivered evaluated unfavorable arrangement where connections rigid, oriented buckle out plane. design procedure examined account dependency energy dissipation mechanism on cyclic loading history.