Browse > Article

Lateral Load Distribution Factor for Pushover Analysis including Higher Mode Effects  

Kim, Geon-Woo (전남대학교)
Song, Jin-Gyu (전남대학교 건축학부)
Lee, Cheol-Ho (서울대학교 건축학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.3, 2006 , pp. 203-210 More about this Journal
Abstract
A procedure for determining the lateral load pattern for pushover analysis which includes higher mode effects is presented in this study. It is well-known that the details of future earthquakes at particular site is almost impossible to predict accurately and that the code-design spectra try to represent at least the average nature of probable future earthquakes. Thus the code-design spectrum is directly used as the input earthquakes in this paper when incorporating higher mode effects in the pushover analysis so that the efforts for selecting input motions and constructing response spectrum needed in some existing method could be avoided. A case study based on the time history analysis of a irregular steel moment frame showed that the procedure proposed in this study generally outperforms various pushover analysis procedures of ATC-40 and FEMA 273. However, the proposed procedure tended to be conservative as compared with the time history analysis method.
Keywords
Pushover Analysis; Higher Mode Effects; Lateral Load Distribution Factor;
Citations & Related Records
연도 인용수 순위
  • Reference
1 김건우, 송진규, "고차모드 영향이 반영된 Pushover 해석을 위한 횡하중 분배계수 제안", 한국지진공학회 춘계학술발표대회 논문집, Vol. 9, No. 1, 2005년 3월, pp. 236-242.   과학기술학회마을
2 FEMA, "NEHRP Guidelines for the seismic rehabilitation of buildings", FEMA 273, Federal Emergency Management Agency, Washington D.C, 1997.
3 Kangning Li(2002). CANNY(Version C02) Users' Manual.
4 엄태성, 이혜린, 박홍근, "고차모드의 효과를 고려한 비선형정적 평가 방법", 한국지진공학회 춘계학술발표대회 논문집, Vol. 9, No. 1, 2005년 3월, pp. 153-160
5 Raul D. Bertero, Vitelmo V. Bertero(2002), Performance-based Seismic engineering: The Need for a Reliable conceptual comprehensive approach.
6 Applied Technology Council(1996), Seismic Evaluation and Retrofit of Concrete Buildings Volume 1(ATC-40).
7 Newmark, n. M. and Hall, W. J.(1982), Earthquake Spectra and Design. Earthquake Engineering Research Inst.
8 Anil K. Chopra, Rakesh K. Goel(2001), A modal pushover analysis procedure to estimate seismic demands for buildings: theory and preliminary evaluation.
9 이동근, 최원호, 안지희, "건축구조물의 비선형 지진응답 평가를 위한 개선된 지진하중 분배방법", 한국지진공학회 논문집, 제5권 제2호.
10 Anil K. Chopra(2001). Dynamics of Structures (Theory and Applications to Earthquake Engineering, second edition).
11 International Conference of Building Officials (1997), Uniform Building Code(UBC 97).