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DOI QR Code

고차모드의 영향을 고려한 수직비정형 건축물의 동적거동평가

Dynamic Assessment for Vertical Irregular Structures Considering Higher Mode Effects

  • 투고 : 2020.10.06
  • 심사 : 2020.11.25
  • 발행 : 2020.12.30

초록

The seismic performance evaluation procedure according to Korea infrastructure safety corporation is classified as nonlinear static procedure and nonlinear dynamic procedure, if the structures were determined that the higher modes are significant, the nonlinear dynamic analysis is required to supplement the nonlinear static procedure such as Pushover analysis. The nonlinear dynamic analysis has a disadvantage in that it takes a lot of time for the analysis and complicated. Therefore, in this study, pushover analysis and nonlinear dynamic analysis were performed to analyze the dynamic behavior of vertical irregular structures considering higher mode effects. In addition, this study was determined whether if it is possible to modeling by replacing vertical irregular structures with regular structures using the story stiffness as a variable. The results of study were confirmed that the higher mode effect can be significant not only for high rise building or vertical irregular structures but also for regular structures. In addition, as a result of the study, it was confirmed that vertical irregular structures can be replaced with regular structures based on the story stiffness.

키워드

과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (No. 2020R1A2C2009351)

참고문헌

  1. CSI. Perform-3D, Nonlinear analysis and performance assessment for 3D structures, user guide version 4. Berkeley, CA: Computers and Structures Inc.; c2006. p.123-141.
  2. De Stefano, M., & Pintucchi, B. (2008). A review of research on seismic behaviour of irregular building structures since 2002. Bulletin of Earthquake Engineering, 6(2), 285-308. https://doi.org/10.1007/s10518-007-9052-3
  3. Esfahanian, A., & Aghakouchak, A. A. (2019). A single-run dynamic-based approach for pushover analysis of structures subjected to near-fault pulse-like ground motions. Journal of Earthquake Engineering, 23(5), 725-749. https://doi.org/10.1080/13632469.2017.1326420
  4. Karavasilis, T. L., Bazeos, N., & Beskos, D. E. (2008). Estimation of seismic inelastic deformation demands in plane steel MRF with vertical mass irregularities. Engineering structures, 30(11), 3265-3275. https://doi.org/10.1016/j.engstruct.2008.05.005
  5. KDS (2018). (KDS 14 20 10) Korean Design Standard.
  6. KDS (2019). Seismic Design Code of Buildings (KDS 41 17 00: 2019), Korean Design Standard
  7. Khaloo, A. R., Masoomi, H., Nozhati, S., & Mohamadi Dehcheshmeh, M. (2016). Influence of diaphragm opening on seismic response of rectangular RC buildings with end shear walls. Scientia Iranica, 23(4), 1689-1698. https://doi.org/10.24200/sci.2016.2239
  8. Korea Infrastructure Safety Corporation (2011). Seismic Evaluation of Existing Infrastructures (Buildings), Ministry of Land, Transport and Maritime Affairs, 115.
  9. Kreslin, M., & Fajfar, P. (2011). The extended N2 method taking into account higher mode effects in elevation. Earthquake engineering & structural dynamics, 40(14), 1571-1589. https://doi.org/10.1002/eqe.1104
  10. PEER Ground Motion Database, Available from: http://ngawest2.berkeley.edu/, Berkeley, California.
  11. Varadharajan, S., Sehgal, V. K., & Saini, B. (2013). Determination of inelastic seismic demands of RC moment resisting setback frames. Archives of Civil and Mechanical Engineering, 13(3), 370-393. https://doi.org/10.1016/j.acme.2013.02.006
  12. Wood, S. L. (1992). Seismic response of R/C frames with irregular profiles. Journal of Structural Engineering, 118(2), 545-566. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:2(545)