SEISMIC RESPONSE EVALUATION OF IRREGULAR HIGH RISE STRUSTURES BY MODAL PUSHOVER ANALYSIS
This paper investigates the accuracy of the modal pushover analysis to estimate the seismic performance of high rise buildings. The effects of structural irregularities in stiffness, strength, mass and combination of these factors are considered. In other words reliability of the modal pushover analysis (MPA) has been verified by defining a referenced regular structure for comparison between MPA and nonlinear dynamic analysis. Using two analysis method for vertically irregular and regular frames leads to the following results: (1) the mass irregularity conditions were found to have a negligible impact on the seismic performance of building, (2) The accuracy of modal pushover analysis to estimate the seismic performance increases when irregularities conducted at lower half stories, (3) Additionally the accuracy does not deteriorate when irregularities provides in the middle or upper story, and (4) Time saving and accuracy besides conceptual simplicity of MPA in brief leads to reliable estimation of seismic performance.
Modal pushover analysis Dynamic analysis Multi-story frames Vertical Irregularity
F. Khoshnoudian S.A. Mohammadi
Dept. of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran. Iran Dept. of Civil and Environmental Engineering, Amirkabir Univ. of Tech., Tehran. Iran
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）