Journal
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
Volume 10, Issue 3, Pages 369-377Publisher
SPRINGER
DOI: 10.1007/s11803-011-0073-1
Keywords
RC frame structures; collapse resistance; fragility curves; seismic fortification intensity; incremental dynamic analysis; mega-earthquake
Categories
Funding
- National Science Foundation of China [90815025, 51178249]
- National Key Technologies RD Program [2009BAJ28B01, 2006BAJ03A02-01]
- Tsinghua University [2010THZ02-1]
- Program for New Century Excellent Talents in University
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According to the Code for Seismic Design of Buildings (GB50011-2001), ten typical reinforced concrete (RC) frame structures, used as school classroom buildings, are designed with different seismic fortification intensities (SFIs) (SFI=6 to 8.5) and different seismic design categories (SDCs) (SDC=B and C). The collapse resistance of the frames with SDC=B and C in terms of collapse fragility curves are quantitatively evaluated and compared via incremental dynamic analysis (IDA). The results show that the collapse resistance of structures should be evaluated based on both the absolute seismic resistance and the corresponding design seismic intensity. For the frames with SF! from 6 to 7.5, because they have relatively low absolute seismic resistance, their collapse resistance is insufficient even when their corresponding SDCs are upgraded from B to C. Thus, further measures are needed to enhance these structures, and some suggestions are proposed.
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