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Title |
Effect of Foundation Modeling on Seismic Performance of Non-Seismic Designed RC Frames- For Case of Shallow Foundations in Moderate and Low Seismic Zones -
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Authors |
이영욱(Young-Wook Lee) ; 김대현(Dea-Hyeon Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2022.34.4.397 |
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Keywords |
얕은 기초; 6-자유도계 스프링; 윙클러 스프링; 내진성능평가; 비내진설계된 RC 골조 shallow foundation; 6-DOF spring; Winkler spring; seismic performance; non-seismic designed RC frame |
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Abstract |
To examine the influence of analytical models of shallow foundations on the seismic performance of non-seismic designed RC frames located at soil sites and , push-over analyses and seismic performance evaluations were performed. Foundations were modeled as 6 DOF springs or Winkler springs according to FEMA 356 and ASCE/SEI 41. 2 and 4 story buildings were designed only for gravity loads, based on the design codes in 1999. The performance points were obtained in case in which the building importance factors were 1.0 and 1.2. As results, it was shown that the foundation modeling had little influence on the capacity curve of frame, even though it might change the locations of plastic hinges. But when Winker model was used and the plastic hinge was occurred at the foundation, the capacity curve might be reduced.
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