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Seismic Performance Evaluation According to Rotation Capacity of Connections for Intermediate Steel Moment Frames - II. Cause Evaluation and Alternative

접합부 회전성능에 따른 중간 철골 모멘트 골조의 내진 성능 평가 - II 원인 평가 및 대안

  • Moon, Ki Hoon (Department of Architectural Engineering, Hanyang University) ;
  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University) ;
  • Ha, Seung Jin (Department of Architectural Engineering, Hanyang University)
  • Received : 2013.11.19
  • Accepted : 2014.02.03
  • Published : 2014.03.03

Abstract

This paper is the sequel of a companion paper (I. Performance Evaluation) evaluating the relation between the seismic performance of steel intermediate moment frames (IMFs) and the rotation capacity of connections. The evaluation revealed that the seismic performance of IMFs having the required minimum rotation capacity suggested in the current standards did not meet the seismic performance criteria presented in FEMA 695. Therefore, thepresent study evaluates the causes of the vulnerable seismic performance for steel IMFs and proposes alternatives to satisfy the seismic performance suggested in FEMA 695. To that goal, the results of nonlinear analysis, which are the pushover analysis and the incremental dynamic analysis, are examined and evaluated. As a result, high-rise IMF systems are seen to have the lower collapse margin ratio after connection fracture than row-rise IMF systems and, the actual response isfound to compared tothedesign drift ratio acting on design load design. Finally, the minimum design load values are proposed to meet the seismic performance suggested in FEMA 695 for IMF systems having vulnerable seismic performance.

Acknowledgement

Supported by : 한국연구재단

References

  1. Architectural Institute of Korea. Korean Building Code and Commentary. Architectural Institute of Korea;c2009
  2. ASCE: Minimum design loads for buildings and other structures. (ASCE/SEI 7-10) American Society of Civil Engineers (ASCE), Reston, VA.;c2010.
  3. American Institute of Steel Construction: Seismic provisions for structural steel buildings. ANSI/AISC 341-10, Chicago, IL;c2010.
  4. Lee K, and Foutch DA. Performance prediction and evaluation of steel special moment frames for seismic loads. SAC Background Document SAC/BD-00/25, SAC Joint Venture, Richmond, Calif;c2000.
  5. Yun SY, Hamburger RO, Cornell CA, Foutch DA. Seismic performance evaluation for steel moment frames. Journal of Structural Engineering. 2002;128(4):534-545. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:4(534)
  6. Khandelwal K, El-Tawil S. Collapse behavior of steel special moment resisting frame connections. Journal of Structural Engineering. 2007;133(5):646-655. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:5(646)
  7. Le-Trung K, Lee K, Lee J, Lee DH. Evaluation of seismic behaviour of steel special moment frame buildings with vertical irregularities. Structural Design of Tall and Special Buildings. 2012;21(3):215-232. https://doi.org/10.1002/tal.588
  8. FEMA: Quantification of Building Seismic Performance Factors. FEMA P695 , SAC Joint Venture and FEMA, Washington, DC;c2009.
  9. ASCE: Minimum design loads for buildings and other structures. (ASCE/SEI 7-05) American Society of Civil Engineers (ASCE), Reston, VA.;c2005.
  10. American Institute of Steel Construction: Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications, ANSI/AISC 358-10, Chicago, IL;c2010.
  11. Han SW, Chopra AK. Approximate incremental dynamic analysis using the modal pushover analysis procedure. Earthquake Engineering & Structural Dynamics. 2006;35:1853-1873. https://doi.org/10.1002/eqe.605
  12. Vamvatsikos D, Cornell CA. Seismic performance, capacity and reliability of structures as seen through incremental dynamic analysis, John A. Blume Earthquake Engineering Center Rep. No. 151, Stanford University, CA;c2002.
  13. Gupta A, Krawinkler H. Seismic demands for performance evaluation of steel moment resisting frame structures. (SAC Task 5.4.3) John A. Blume Earthquake Engineering Research Center, Rep. No. 132, Dept. Civil Engrg., Stanford University;c1999.
  14. Foutch DA. State-of-the-art report on performance prediction and evaluation of moment-resisting steel frame structures. Report No. FEMA-355f, Federal Emergency Management Agency, Washington, DC.;c2000.
  15. Herrera RA, Ricles JM, Sause R. Seismic performance evaluation of a large-scale composite MRF using pseudodynamic testing. Journal of Structural Engineering. 2008;134(2):279-288. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:2(279)
  16. Chopra AK, Goel RK. A modal pushover analysis procedure for estimating seismic demands for buildings. Earthquake Engineering and Structural Dynamics. 2002;31(3):561-582. https://doi.org/10.1002/eqe.144