Earthquakes and Structures

  • 제26권1호
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  • Pages.1-15
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  • 2024
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Analysis of soft deformation limitation of base-isolated structures

  • Jinwei Jiang (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Baoyang Yang (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture)
  • 투고 : 2023.05.05
  • 심사 : 2023.11.15
  • 발행 : 2024.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

Isolation technology has been proven effective in reducing the seismic response of superstructures, where most of the deformation is concentrated in the isolation layer. However, in cases of earthquakes with intensities surpassing the fortification level of the area, or severe near-fault earthquakes, the isolation layer may experience excessive deformation, resulting in damage to the isolation bearings or collisions with the retaining wall or surrounding buildings. In this study, a finite element model using ABAQUS is established and compared with experimental test results to deeply investigate the influence of limit devices on the isolation layer and its response to the superstructure. The findings reveal that a larger limiter stiffness and a smaller reserved gap can achieve a more effective limiting effect. Nevertheless, a smaller reserved gap and a larger limiter stiffness may result in increased response of the superstructure. Therefore, rational selection of the reserved gap and limiter stiffness is crucial to reduce the acceleration response.

키워드

참고문헌

  1. Du, H.K., Wang, Y.D., Han, M. and Ibarra, L.F (2021), "Experimental seismic performance of a base-isolated building with displacement limiters", Eng. Struct., 244, 112811. https://doi.org/10.1016/j.engstruct.2021.112811.
  2. Du, J.M, Yuan, Y.S. and Wang, B. (2009), "Research on seismic reduction behavior of isolation connection after monolithic translation of multistoried frame structure", J. China Univ. Min. Technol., 38(2), 164-169.
  3. Du, Y.F., Li, H., Su, P.S. and Zhao, G.F. (2003), "Real mode superposition method for analysis of seismic response of non-proportionally damped isolated structures", Eng. Mech., 20(4), 24-32.
  4. Fan, J. and Tang, J.X. (2001), "Dynamic characteristics and earthquake response analysis of structures supported on slide-limited friction base isolation system", J. Build. Struct., 22(1), 20-25. https://doi.org/10.14006/j.jzjgxb.2001.01.004.
  5. Han, M., Du, H.K. and Li, X.H. (2008), "Testing study on soft-collision limiting displacement of base isolating layer", Eng. Mech., 25,124-128.
  6. Han, M., Guo, F.M. and Jiang, Y. (2013), "Analysis of combination limiting deformation to base isolation layer under near-field ground motion", Build. Struct., 2013(s1), 1237-1241. https://doi.org/10.19701/j.jzjg.2013.s1.286.
  7. Han, M., Jiang, Y. and Guo, F.M. (2013), "Analysis of spring limiting deformation of base isolation layer under near-field ground motion", J. Fuzhou Univ., 41(4), 617-621. https://doi.org/10.7631 /issn.1000-2243.2013.04.0617. https://doi.org/10.7631/issn.1000-2243.2013.04.0617
  8. Han, M., Li, X.H. and Du, H.K. (2007), "Experiment on limiting displacement of steel spring soft-collision for a base isolating layer", World Earthq. Eng., 23(4), 39-43.
  9. Han, M., Sha, Q.L. and Wen, Z.P. (2013), "Study on displacement limit of rubber bearing isolation buildings in near-fault region", World Earthq. Eng., 29(1), 74-79.
  10. Han, M., Sun, H. and Duan, Y.L. (2013), "Shaking table test study on spring limiting deformation to base isolation layer under near-field ground motion", Earthq. Resist. Eng. Retrofit., 35(5), 127-131. https://doi.org/10.3969/j.issn.1002-8412.2013.05.021.
  11. Han, M., Wang, Y.D., Du, H.K., Chu, X.Y., Cui, M.Z. and Meng, L.S. (2021), "Base-isolated steel structure with spring limiters under near-fault earthquakes: Experiment", Earthq. Struct., 21(3), 239-250. https://doi.org/10.12989/eas.2021.21.3.239.
  12. Jangid, R.S. and Kelly, J.M. (2010), "Base isolation for near-fault motion", Earthq. Eng. Struct. Dyn., 30(5), 691-707. https://doi.org/10.1002/eqe.31.
  13. Jangid, R.S. (2004), "Response of SDOF system to non-stationary earthquake excitation", Earthq. Eng. Struct. Dyn., 33(15), 1417-1428. https://10.1002/eqe.409.
  14. Ji, J.B., Ni, Z.W., Du, Y.Y. and Fu, Y.Q. (2012), "Study on first-floor isolated structure with metallic damper", Adv. Mater. Res., 1615, 446-449. https://doi.org/10.4028/www.scientific.net/AMR.446-449.3042.
  15. Kishida, A., Nishimura, N., Yamashita, Y., Taga, K., Fujitani, H. and Mukai, Y. (2017), "Response reduction methods for base isolated buildings with collision to retaining walls", SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring 2017, Portland, OR, USA, March.
  16. Losanno, D., Ravichandran, N. and Parisi, F. (2022), "Seismic fragility of base-isolated single-storey unreinforced masonry buildings equipped with classical and recycled rubber bearings in Himalayan regions", J. Build. Eng., 45, 103648. https://doi.org/10.1016/j.jobe.2021.103648.
  17. Losanno, D., Ravichandran, N. and Parisi, F. (2023), "Seismic fragility models for base-isolated unreinforced masonry buildings with fiber-reinforced elastomeric isolators", Earthq. Eng. Struct. Dyn., 52(2), 308-334. https://doi.org/10.1002/eqe.3761.
  18. Losanno, D., Ravichandran, N., Parisi, F., Calabrese, A. and Serino, G. (2021), "Seismic performance of a low-cost base isolation system for unreinforced brick masonry buildings in developing countries", Soil Dyn. Earthq. Eng., 141, 106501. https://doi.org/10.1016/j.soildyn.2020.106501.
  19. Luo, C.X. (2016), "The storey-isolated limiting deformation experiment analysis and model design", M.D. Dissertation, Beijing University of Civil Engineering and Architecture, Beijing, China.
  20. Matsagar, V.A. and Jangid, R.S. (2010), "Impact response of torsionally coupled base-isolated structures", J. Vib. Control, 16(11), 1623-1649. https://10.1177/1077546309103271.
  21. Mazza, F. (2021), "Base-isolation of a hospital pavilion against in-plane-out-of-plane seismic collapse of masonry infills", Eng. Struct., 228, 111504. https://doi.org/10.1016/j.engstruct.2020.111504.
  22. Morales, C.A. (2021), "Narrowbandness of seismic ground displacement on a broader area of the lithosphere and importance on base motion in isolated structures", J. Vibroeng., 23(2), 400-406. https://doi.org/10.21595/jve.2020.21682.
  23. Polycarpou, P.C., Komodromos, P and Polycarpou, A.C. (2013), "A nonlinear impact model for simulating the use of rubber shock absorbers for mitigating the effects of structural pounding during earthquakes", Earthq. Eng. Struct. Dyn., 42(1), 81-100. https://doi.org/10.1002/eqe.2194.
  24. Zargar, H., Ryan, K.L. and Rawlinson, T.A. (2017), "Evaluation of a passive gap damper to control displacements in a shaking test of a seismically isolated three-story frame", Earthq. Eng. Struct. Dyn., 46(1), 51-71. https://doi.org/10.1002/eqe.2771.