| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 93 === A 3-story frame with concrete-filled tube columns (CFT) and buckling restrained braces was tested in October 2003. The purposes of the test are discussing the seismic behavior of steel beam to CFT column connections and BRB in frame. For frame analysis and comparison of the result, nonlinear structural program, DRAIIN-2DX, is used. First step of analysis is modeling and simulating the sub-structure by DRAIN-2DX, then comparing the results with test. When the results of sub-structure model are matched with experiment, frame analysis is proceeded. Based on comparison of analysis and experiment, the results of simulating sub-structure are excellent, DRAIN-2DX can effectively predict the global stiffness and strength. For the frame analysis, the results of simulation in Phase I are fine. But because of the failure in the detail of frame, the error in simulating is added in Phase II. It is observed that considering the slab effect on the flexural strength of the steel beam leads to more accurate analysis results. Pushover analyses were performed to study the effect of joint stiffness of the panel zone on the nonlinear behavior of the frame. Compared to rigid joint, semi-rigid joint modeling results in slightly lower ultimate strength of the frame, but not the elastic stiffness of the frame.
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