The Research Of Seismic Demands On Column Splices In Special Steel Moment Frame

The steel moment frame is one of the most commonly used structural systems in modern constructions. Complete-joint-penetration groove welds are used to make the column splice in American seismic provisions for structural steel buildings. They visibly increase the price of fixing and construction, when we compare the requirement with using partial-joint-penetration groove welds. To find out seismic demands on column splices in special steel moment frame under strong ground motions, the paper analyzes the designed frame through the pushover analysis and nonlinear time history analysis. It is the foundation of deeper research in the future.A 15-floor typical special steel moment frame is designed based on the current manual of steel construction and seismic design requirement in America. The column splices are located 52 inch above the surface of every other floor. The two-dimensional model of the moment resisting frame is built in SAP2000. The pushover analysis and nonlinear time history analysis are used on the seismic research of the building. And the two analysis methods are more reasonable and combinable with the actual instance than the general seismic analysis methods.Through the research work of the thesis, we can conclude that when complete-joint-penetration groove welds are used to make column splices, they can resist strong earthquake ground motions and satisfy the seismic requirement. At the same time, the paper offers the results of the theory and data for the research of the test and the theory that people replace complete-joint-penetration groove welds using partial-joint-penetration groove welds.