| Title |
Seismic Performance Evaluation of Steel Moment Resisting Frame with Various Hysteresis Connection Models |
| Authors |
Shin Ji-Wook ; Lee Ki-Hak ; Jeong Seong-Hoon |
| Keywords |
Seismic Performance Evaluaition ; Steel Moment Resisting Frame(SMRF) ; Hysteresis Connection Model ; Fragility Analysis ; Culmulative Distribution Function(CDF) |
| Abstract |
This paper presents the seismic performance of steel Moment Resisting Frame(MRF) buildings with various hysteretic connection models using the fragility analysis, which evaluates the probability of damage for the structural systems versus the Peak Ground Acceleration(PGA). For this study, 9-and 20-story buildings with six different hysteresis models(strength and/or stiffness degradation and brittle behavior) were used and five different fundamental periods were developed for the analytical models to evaluate the dynamic characteristics of the model buildings. The fragility curve for each damage level defined in FEMA 356 was investigated and analyzed. In order to calculate the probability of the damage for the structures subjected to the ground motions, Cumulative Distribution Function(CDF) was applied to calculate the probabilistic parameters, such as median values and standard deviation. Based on this research, it is concluded that the building with the Type A connection model, which has been widely used for the analysis were relatively conservative than other connections considered in this study. It is believed that the detailed connection models including the effects of stiffness/strength degradation and the connection types used in this study should be considered to evaluate the accurate performance of structures. |