Analysis model of beam-to-column connection with opening in beam web

Opening in beam web is an effective method to improve the seismic behavior of steel moment resisting frame(MRF),and the non-linear analysis model of the beam-to-column connection with opening in beam web(OBW) is provided based on test results.The opening in beam web can be simulated by a plastic hinge located on beam with 0.45R away from the opening center(R is opening radius),and the load-deformation curve of the plastic hinge is the same as steel beam only with some difference in yielding loads.Compared with test results,numerical analysis using the non-linear model of the OBW connection can offer the seismic responses and failure mode of steel moment frame.