Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

A Method of Selecting Ground Motions for Three-Dimensional Dynamic Analysis of Structures

구조물의 3차원 시간이력해석을 위한 지진파 결정 방법

  • Ha, Seong Jin (Department of Architectural Engineering, Koran National University of Transportation)
  • 하성진 (한국교통대학교 건축공학과)
  • Received : 2020.03.19
  • Accepted : 2020.06.22
  • Published : 2020.08.30
⟨ Previous Next ⟩

Abstract

Dynamic analyses such as response spectrum analysis or time history analysis of structures have been performed to assess the structural demands for earthquake loads. For time history analysis, it is very important to select appropriate input ground motions with construction of numerical models of structures that reflects the non-linearity of the structure. In particular, three-dimensional dynamic analyses are required for skyscrapers or irregular buildings, according to seismic design codes. Current seismic design codes require that two-dimensional time history analysis of a structure should be analyzed using three or more horizontal component ground motions. For three-dimensional analysis, at least three seismic records each consisting of two horizontal components are required. In this study, a method of selecting ground motions for three-dimensional time history analysis of structures was developed in accordance with the criteria of seismic design code. In the method, the square roots of sum of squares for selected response spectra are very similar to the shape and size of the design spectrum. Also, the algorithm is simple, so takes a few seconds for selecting input ground motions. The proposed method is applicable to all target spectra which has only mean spectrum, such as design spectrum, uniform hazard spectrum or conditional spectrum.

Keywords

Acknowledgement

이 연구는 한국교통대학교와 2020년도 한국연구재단 연구비 지원에 의한 결과의 일부임. 과제번호: NRF-2017R1C1B5076937

References

  1. KDS. (2019). Seismic Building Design Code (KDS 41 17 00), Korean Design Standard
  2. KISC. (2011). Guidelines for seismic performance evaluation and rehabilitation of existing buildings. Korean Infrastructure Safety Corporation
  3. SJ. Ha, SW. Han, & HW. Woo. (2017). Assessment of Code-specified Ground Motion Selection Criteria with Accurate Selection and Scaling Methods - I Ground Motion Selection. Journal of the Earthquake Engineering Society of Korea, 21(4), 171-179. https://doi.org/10.5000/EESK.2017.21.4.171
  4. ASCE. (2010). Minimum design loads for building and other structures (ASCE 7-10), American Society of Civil Engineers, Reston, Virginia.
  5. ASCE. (2016). Minimum design loads for building and other structures (ASCE 7-16), American Society of Civil Engineers, Reston, Virginia.
  6. ASCE. (2013). Seismic evaluation and retrofit of existing buildings (ASCE 41-13). American Society of Civil Engineers, Reston, Virginia.
  7. Hancock, Jonathan, Julian J., Bommer, & Peter J. Stafford. (2008). Numbers of scaled and matched accelerograms required for inelastic dynamic analyses, Earthquake Engineering & Structural Dynamics, 37(14), 1585-1607. https://doi.org/10.1002/eqe.827
  8. Buratti, Nicola, Peter J., Stafford, & Julian J., Bommer. (2010). Earthquake accelerogram selection and scaling procedures for estimating the distribution of drift response, Journal of Structural Engineering, 137(3), 345-357. https://doi.org/10.1061/(asce)st.1943-541x.0000217
  9. Katsanos, E. I., & A. G. Sextos. (2015). Inelastic spectra to predict period elongation of structures under earthquake loading, Earthquake Engineering & Structural Dynamics, 44(11), 1765-1782. https://doi.org/10.1002/eqe.2554
  10. Jayaram, N., Lin, T., & Baker, J.W. (2011). A computationally efficient ground-motion selection algorithm for matching a target response spectrum mean and variance, Earthquake Spectra, 27(3), 797-815. https://doi.org/10.1193/1.3608002
  11. Han, SW., Ha, SJ., & Seok, SW. (2014). Efficient and accurate procedure for selecting ground motions matching target response spectrum, Nonlinear Dynamics, 78(2), 889-905. https://doi.org/10.1007/s11071-014-1484-0
  12. Lin, Ting, Curt B. Haselton, & Jack W. Baker. (2013). Conditional spectrum-based ground motion selection. Part I: hazard consistency for risk-based assessments, Earthquake engineering & structural dynamics, 42(12), 1847-1865. https://doi.org/10.1002/eqe.2301
  13. Power, M., Chiou, B., Abrahamson, N., Bozorgnia, Y., Shantz, T., & Roblee, C. (2008). An overview of the NGA project. Earthquake spectra, 24(1), 3-21. https://doi.org/10.1193/1.2894833