| During the 1994 Northridge earthquake and 1995 Kobe earthquake, the typical beam-column moment connection in steel moment-resisting frame suffered unexpected brittle failures. After the earthquake many studies on the behavior of beam-column connections used in steel moment resisting frame and their effect on seismic behavior of steel frames and the studying of performance-based design have been carried out. Elastic-plastic analysis has become an important part of structural seismic design, among which the nonlinear static push-over analysis has attracted the attention of moreand more engineers for its merits of simpleness and practicality. The nonlinear staticanalysis has become one of nonlinear analysis tools of Chinese seismic code.This paper presents a static elastic-plastic analysis between the behavior of single normal steel beam-column connection and that of single dog-bone connection. Introduced the theory of nonlinear pushover analysis and the method that ETABS carries on it.At the process of modeling, introduced the plane bacilliform model and the frame nonlinear hinge for defining material nonlinear.Introduced four loading pattern for pushover analysis.According to the plastic hinge distribution which was obtained from the nonlinear pushover analysis, the steel frames with dog-bone connection satisfied the "stronger column weaker beam". According to the base shear-top displacement at performance point of these two structures, the top displacement of the steel frame with dog-bone connections is 2% larger than that of normal steel frame but the base shear is 0.5% smaller than that of normal steel frame at basic earthquake and the top displacement of the steel frame with dog-bone connections is 2.5% larger than that of normal steel frame but the base shear is 4% smaller than that of normal steel frame at maximam earthquake.It's proved that the steel frame with dog-bone connection is better for resist earthquake at same conditions.
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