Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Verification of Real-time Hybrid Test System using RC Pier Model

RC교각을 이용한 실시간 하이브리드 실험 시스템의 적용성 연구

  • Lee, Jinhaeng (Department of Civil and Environmental Engineering, Myongji University) ;
  • Park, Minseok (Department of Civil and Environmental Engineering, Myongji University) ;
  • Chae, Yunbyeong (Department of Environmental Engineering, Old Dominion University) ;
  • Kim, Chul-Young (Department of Civil and Environmental Engineering, Myongji University)
  • 이진행 (명지대학교 토목환경공학과) ;
  • 박민석 (명지대학교 토목환경공학과) ;
  • 채윤병 (올드도미니언대학교 토목환경공학과) ;
  • 김철영 (명지대학교 토목환경공학과)
  • Received : 2018.03.05
  • Accepted : 2018.04.25
  • Published : 2018.05.01
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Abstract

Structure behaviors resulting from an earthquake are experimentally simulated mainly through a shaking table test. As for large-scale structures, however, size effects over a miniature may make it difficult to assess actual behaviors properly. To address this problem, research on the hybrid simulation is being conducted actively. This method is to implement numerical analysis on framework members that affect the general behavior of the structure dominantly through an actual scale experiment and on the rest parts by applying the substructuring technique. However, existing studies on hybrid simulation focus mainly on Slow experimental methods, which are disadvantageous in that it is unable to assess behaviors close to the actual level if material properties change depending on the speed or the influence of inertial force is significant. The present study aims to establish a Real-time hybrid simulation system capable of excitation based on the actual time history and to verify its performance and applicability. The hybrid simulation system built up in this study utilizes the ATS Compensator system, CR integrator, etc. in order to make the target displacement the same with the measured displacement on the basis of MATLAB/Simulink. The target structure was a 2-span bridge and an RC pier to support it was produced as an experimental model in order for the shaking table test and Slow and Real-time hybrid simulations. Behaviors that result from the earthquake of El Centro were examined, and the results were analyzed comparatively. In comparison with the results of the shaking table test, the Real-time hybrid simulation produced more similar maximum displacement and vibration behaviors than the Slow hybrid simulation. Hence, it is thought that the Real-time hybrid simulation proposed in this study can be utilized usefully in seismic capacity assessment of structural systems such as RC pier that are highly non-linear and time-dependent.

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References

  1. Cho SM, Choi IG, Jung DS, Kim CY. Verification of Hybrid Struc- tural Test Technique by Shaking Table Test of a Linear 2-Dimensional Frame Model. EESK. 2010;14(6):33-43.
  2. Hakuno M, Shidawara M, Hara T. Dynamic Destructive Test of a Can- tilever Beam, Controlled by an Analog-computer. Transactions of the Japan Society of Civil Engineers. 1969;1969(171):1-9.
  3. Takanashi K, Udagawa K, Seki M, Okada T, Tanaka H. Non-linear Earthquake Response Analysis of Structures by a Computer Actuator On-line System (details of system). Transactions of the Architectural Institute of Japan. 1975;229:77-83. https://doi.org/10.3130/aijsaxx.229.0_77
  4. Takanashi K, Nakashima M. Japanese Activities on Online Testing. Journal of Engineering Mechanics. 1987;113(7):1014-1032. https://doi.org/10.1061/(ASCE)0733-9399(1987)113:7(1014)
  5. Shing PB, Mahinm S. Experimental Error Propagation in Pseudodynamic Testing. UCB/EERC-83/12. Earthquake Engineering Research Institute. University of California. Berkely California. c1983.
  6. Tanaka H. A Computer-actuator On-line System for Non-linear Earthquake Response Analysis of Structures. Journal of the Industrial Science. 975;27:15-19.
  7. Thewalt CR, Mahin SA. Hybrid Solution Techniques for Generalized Pseudodynamic Testing. UBC/EERC-87/09. Earthquake Engineering Research Institute. Univercity of California, Berkeley. California. c1987.
  8. Nakashima M, Kaminosono T, Ishida M, Ando K. Integration Techniques for Substructure Pseudodynamic Test. Proc. of the 4th U.S. National Conference on Earthquake Engineering. 1990;2:515-524.
  9. Shing PB, Vannan MT. Implicit Algorithm for Pseudodynamic Tests: Convergence and Energy Dissipation. Earthquake Engineering and Structural Dynamics. 1991;20(9):809-819. https://doi.org/10.1002/eqe.4290200902
  10. Nakashima M, Akazawa T, Igarashi H. Pseudo-dynamic Testing using Conventional Testing Devices. Earthquake Engineering and Structural Dynamics. 1995;24(10):1409-1422. https://doi.org/10.1002/eqe.4290241009
  11. Nakashima M, Masaoka N. Real-time On-line Test for MODF Systems. Earthquake Engineering and Structural Dynamics. 1999;28(4): 393-420. https://doi.org/10.1002/(SICI)1096-9845(199904)28:4<393::AID-EQE823>3.0.CO;2-C
  12. Nakashima M. Development, Potential, and Limitations of Realtime Online (Pseudo-dynamic) Testing. Philosophical Transactions of the Royal Society of London A. 2001;359(1786):1851-1867. https://doi.org/10.1098/rsta.2001.0876
  13. Zhao J, French C, Shield C, Posberg T. Considerations for the Development of Real-time Dynamic Testing using Servo-hydraulic Actuation. Earthquake Engineering and Structural Dynamics. 2003;32(11): 1773-1794. https://doi.org/10.1002/eqe.301
  14. Jung RY, Benson Shing P. Performance Evaluation of a Real-time Pseudodynamic Test System. Earthquake Engineering and Structural Dynamics. 2006;35(7):789-810. https://doi.org/10.1002/eqe.547
  15. Chen C. Development and Numerical Simulation of Hybrid Effective Force Testing Method. Ph.D. Civil and Environmental Engineering. Lehigh University. c2007.
  16. Chae Y, Kazemibidokhti K, Ricles JM. Adaptive Time Series Compensator for Delay Compensation of Servo-hydraulic Actuator Systems for Real-time Hybrid Simulation. Earthquake Engineering and Structural Dynamics. 2013;42(11):1697-1715. https://doi.org/10.1002/eqe.2294
  17. Reinhorn AM, Sivaselvan MV, Liang Z, Shao X. Real-time Dynamic Hybrid Testing of Structural System. Proc. of the 13th World Conference on Earthquake Engineering. c2004.
  18. Shao X, Reinhorn AM, Sivaselvan MV. Real-time Hybrid Simulation using Shake Tables and Dynamic Actuators. Journal of structural Engineering. 2011;137(7):748-760. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000314
  19. Kim DW. Development of The Remote Hybrid Experiment and Collaboration Tool in Civil Engineering Collaboratory. Master Thesis. Computer Engineering. Hongik Univ. c2012.
  20. Choi IG. Development and Verification of Hybrid Test System using Small Column Model. Master Thesis. Civil and Environmental Engineering. Myongji univ. c2009.
  21. Kang DH. Real-time Hybrid Testing using a Fixed Iteration Implicit HHT Time Integration Method for a Reinforced Concrete Frame. EESK. 2011;15(5):11-24.
  22. Lee JJ. Evaluation of Applicability and Reliability for Hybrid Testing. Master Thesis. Civil Engineering. Inha Univ. c2012.
  23. Kim SH, Na OP, Kim SI. et al. Single Degree of freedom hybrid dynamic test with Steel Frame Strucuture, KSR, 2012;5(4):413-421.
  24. Na OP, Kim SH, Kim SI. et al. Real-time Structural Dynamic Test using Parallelized Control Algorithms and Optimized Hybrid System, Journal of The Korean Society of Hazard Mitigation. 2012;12(5): 63-73. https://doi.org/10.9798/KOSHAM.2012.12.5.063
  25. Park MS. Seismic Performance Evaluation of Small RC Bridge Model using Improved Hybrid Test System. Master Thesis. Civil and Environmental Engineering. Myongji Univ. c2015.
  26. Park JW. Study on the Development of Pseudo Dynamic Hybrid Seismic Response Simulation System. Master Thesis. Architectural Engineering. Chosun Univ. c2016.