DOI QR코드

DOI QR Code

지반강성 및 고유진동수비에 따른 교량의 지진충돌해석

Seismic Pounding Analysis of Bridge According to Soil Stiffness and Natural Frequency Ratio

  • 투고 : 2014.02.04
  • 심사 : 2014.05.09
  • 발행 : 2014.07.01

초록

This paper examines the pounding problem between adjacent decks subjected to strong earthquakes. The elastomeric bearings in an isolated bridge reduce the stresses on the superstructure and cushion the impact by transferring smaller seismic forces to the substructure. On the other hand, these bearings also allow large horizontal displacement of the superstructure due to seismic forces. Bridges having various supporting soil conditions and different frequency ratios between adjacent decks are investigated by numerical analysis. In the analysis, decision making is conducted whether the collision took place or not and, the magnitude of pounding force and the duration time of collision are obtained and the results are discussed.

키워드

참고문헌

  1. Muthukumar S, Desroches R. Evaluation of Impact Models for Seismic Pounding. 13th World Conference on Earthquake Engineering. 2004 Aug 1-6; Vancouver, B.C., Canada: Paper No. 235.
  2. Hao H. A parametric study of the required seating length for bridge decks during earthquake. Earthquake Engineering and Structural Dynamics. 1998;27(1):91-103. https://doi.org/10.1002/(SICI)1096-9845(199801)27:1<91::AID-EQE722>3.0.CO;2-I
  3. Bi K, Hao H, Chouw N. Influence of ground motion spatial variation, site condition and SSI on the required separation distances of bridge structures to avoid seismic pounding. Earthquake Engineering and Structural Dynamics. 2011;40(9):1027-1043. https://doi.org/10.1002/eqe.1076
  4. Li B, Bi K, Chouw N, Butterworth JW, Hao H. Experimental investigation of spatially varying effect of ground motions on bridge pounding. Earthquake Engineering and Structural Dynamics. 2012;41:1959-1976. https://doi.org/10.1002/eqe.2168
  5. Kim SH, Ma HS, Koo HS. Analysis of unseating failure of various types of bridge spans under seismic excitations. Proceedings of EESK Conference-Spring. 1998 Apr 1;123-130.
  6. Kim SH, Ma HS, Kim SJ, Lee SW. Effect of pounding and friction upon bridge motions under seismic excitations. Proceedings of EESK Conference-Fall. 1999 Oct 1;193-202.
  7. Kwon YL, Kim JW, Choi KK. Pounding mechanism and mitigation effect of pounding between adjacent decks during strong earthquake. Journal of Ocean Engineering and Technology. 2006; 20(5):63-69.
  8. Choi HS, Kim JW, Kong YE, Jung JH, Kim IT. Pounding characteristics of a bridge superstructure on rubber bearings. Journal of Earthquake Engineering Society of Korea. 2011;15(4): 13-21. https://doi.org/10.5000/EESK.2011.15.4.013
  9. Papadrakakis M, Mouzakis H, Plevris N, Bitzarakis S. Lagrange multiplier solution method for pounding of buildings during earthquakes. Earthquake Engineering and Structural Dynamics. 1991;20(11):981-998. https://doi.org/10.1002/eqe.4290201102
  10. Athanassiadou CJ, Penelis GG, Kappos AJ. Seismic response of adjacent buildings with similar or different dynamic characteristics. Earthquake Spectra. 1994;10(2):293-317. https://doi.org/10.1193/1.1585775
  11. Malhotra PK. Dynamics of seismic pounding at expansion joints of concrete bridges. ASCE Journal of Engineering Mechanics. 1998; 124(7):794-802. https://doi.org/10.1061/(ASCE)0733-9399(1998)124:7(794)
  12. Maison BF, Kasai K. Analysis for type of structural pounding. ASCE Journal of Structural Engineering. 1990;116(4):957-975. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:4(957)
  13. Anagnostopoulos SA. Pounding of buildings in series during earthquakes. Earthquake Engineering and Structural Dynamics. 1988;16(3):443-456. https://doi.org/10.1002/eqe.4290160311
  14. Jankowski R, Wilde K, Fuzino Y. Pounding of superstructure segments in isolated elevated bridge during earthquakes. Earthquake Engineering and Structural Dynamics. 1998;27(5):487-502. https://doi.org/10.1002/(SICI)1096-9845(199805)27:5<487::AID-EQE738>3.0.CO;2-M
  15. Pantelides CP, Ma X. Linear and nonlinear pounding of structural systems. Computers & Structures. 1998;66(1):79-92. https://doi.org/10.1016/S0045-7949(97)00045-X
  16. Chau KT, Wei XX. Pounding of structures modeled as non-linear impacts of two oscillators. Earthquake Engineering and Structural Dynamics. 2001;30(5):633-651. https://doi.org/10.1002/eqe.27
  17. SIMQKE, A program for artificial motion generation user's manual and documentation. Department of Civil Engineering, M.I.T. 1976.
  18. Earthquake Engineering Society of Korea. A study of seismic design criteria(II). Ministry of Construction and Transport. 1997.
  19. Gazeaas. Foundation vibrations. Foundation engineering Handbook. 2nd ed ;c1991. p.553-593.