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The effect of rubber bumper in order to suggest a new equation to calculate damping ratio, subjected building pounding during seismic excitation

  • Khatami, S.M. (University of Applied Science and Technology, Center of Semnan Municipality) ;
  • Naderpour, H. (Faculty of Engineering, Semnan University) ;
  • Mortezaei, A.R. (Seismic Geotechnical and High Performance Concrete Research Centre, Civil Engineering Department, Semnan Branch, Islamic Azad University) ;
  • Barros, R.C. (Faculty of Civil Engineering, University of Porto (FEUP)) ;
  • Maddah, M. (University of Applied Science and Technology, Center of Semnan Municipality)
  • 투고 : 2021.12.19
  • 심사 : 2022.08.03
  • 발행 : 2022.08.25

초록

One of the objectives to prevent building pounding between two adjacentstructures is to considerseparation distance or decrease relative displacement during seismic excitation. Although the majority of building codes around the world have basically suggested some equations or approximately recommended various distances between structuresto avoid pounding hazard, but a lot of reportsin zone of pounding have obviously shown thatsafety situation or economic consideration are not always provided due to the collisions between buildings and the cost of land, respectively. For this purpose, a dynamic MDOF model by having base isolation system is numerically considered and using various earthquake records, relative displacements are mathematically investigated. Different equations to determine the value of damping ratio are collected and the results of evaluations are listed for comparison among them to present a new equation for determination of impact damping ratio. Presented equation is depends significantly on impact velocity before and after impact based on artificial neural network, which the accuracy of them is investigated and also confirmed. In order to select the optimum equation, hysteresisloop of impact between base of building and rubber bumper is considered and compared with the hysteresis loop of each impact, calculated by different equations. Finally, using representative equation, the effect of thickness, number and stiffness of rubber bumpers are numerically investigated. The results of analysis indicate that stiffness and number of bumpers have significantly affected in zone of impact force while the thickness of bumpers have not shown significant influence to calculate impact force during earthquake. For instance, increasing the number of bumpers, gap size between structures and also the value of stiffness is caused to decrease impact force between models. The final evaluation demonstrates that bumpers are able to decrease peak lateral displacement of top story during impact.

키워드

참고문헌

  1. Abdel Raheem, S.E. (2014), "Mitigation measures for earthquake induced pounding effects on seismic performance of adjacent buildings", Bull. Earthq. Eng., 12(4), 1705-1724. https://doi.org/10.1007/s10518-014-9592-2.
  2. Akbulut, M., Sarac, A. and Ertas, A.H. (2020), "An investigation of non-linear optimization methods on composite structures under vibration and buckling loads", Adv. Comput. Design., 5(3), 209-231. https://doi.org/10.12989/acd.2020.5.3.209.
  3. Al-Fahdawi, O.A. and Barroso, L.R. (2021), "Adaptive neurofuzzy and simple adaptive control methods for full threedimensional coupled buildings subjected to bi-directional seismic excitations", Eng. Struct., 232, 111798. https://doi.org/10.1016/j.engstruct.2020.111798.
  4. Al-Fahdawi, O.A., Barroso, L.R. and Soares, R.W. (2018), "Utilizing the adaptive control in mitigating the seismic response of adjacent buildings connected with MR dampers", Proceedings of the Annual American Control Conference (ACC), Milwaukee, WI, USA, June.
  5. Anagnostopoulos, S.A and Karamaneas, C.E. (2008), "Use of collision shear walls to minimize seismic separation and to protect adjacent buildings from collapse due to earthquakeinduced pounding", Earthq. Eng. Struct. Dyn., 37(12), 1371-1388. https://doi.org/10.1002/eqe.817.
  6. Anagnostopoulos, S.A. (1988), "Pounding of buildings in series during earthquakes", Earthq. Eng. Struct. Dyn., 16(3), 443-456. https://doi.org/10.1002/eqe.4290160311.
  7. Barros, R.C. and Khatami, S.M. (2010), "Damping ratios for pounding of adjacent building and their consequence on the evaluation of impact forces by numerical and experimental models", Mecanica Experimental, 22, 119-131.
  8. Braz, C. and Barros, R.C. (2010), "Semi-active Vibration Control of Buildings using MR Dampers: Numerical and Experimental Verification", 14th Earthquake conference on Earthquake Engineering, Ohrid, Macedonia, September.
  9. Dogruel, S. (2005), "Application of genetic algorithms for optimal aseismic design of passively damped adjacent structures", M.Sc. Dissertation, State University of New York at Buffalo, USA.
  10. Falborski, T., Jankowski, R. and Kwiecien, A. (2012), "Experimental study on polymer mass used to repair damaged structures", Key Eng. Mater., 488-489, 347-350. https://doi.org/10.4028/www.scientific.net/KEM.488-489.347
  11. Fu, W., Zhang, C., Li, M. and Duan, C. (2019), "Experimental investigation on semi-active control of base isolation system using magnetorheological dampers for concrete frame structure", Appl. Sci., 9(18), 3866. https://doi.org/10.3390/app9183866.
  12. Garcia, D.L. (2004), "Separation between adjacent non-linear structures for prevention of seismic pounding", Proceedings of 13th World Conference on Earthquake Engineering, Vancouver, Canada, August. https://doi.org/10.4028/www.scientific.net/KEM.488-489.347.
  13. Jankowski, R. (2015), "Pounding between superstructure segments in multi-supported elevated bridge with three-span continuous deck under 3D non-uniform earthquake excitation", J. Earthq. Tsunami, 9(4), 1550012. https://doi.org/10.1142/S1793431115500128.
  14. Jankowski, R., Wilde, K. and Fujino, Y. (2000), "Reduction of pounding effects in elevated bridges during earthquakes", Earthq. Eng. Struct. Dyn., 29(2), 195-212. https://doi.org/10.1002/(SICI)1096-9845(200002)29:2%3C195::AIDEQE897%3E3.0.CO;2-3.
  15. Karayannis, C. and Naoum, M. (2018) "Torsional behavior of multistory RC frame structures due to asymmetric seismic interaction", Eng. Struct., 163, 93-111. https://doi.org/10.1016/j.engstruct.2018.02.038.
  16. Kasai, K., Jeng, V., Patel, P.C., Munshi, J.A. and Maison, B.F. (1992), "Seismic pounding effects-survey and analysis", Proceedings of the 10th World Conference on Earthquake Engineering, Madrid, Spain, July.
  17. Kelly, J.M. (1993), Earthquake-resistant Design with Rubber, Springer, London, United Kingdom.
  18. Khatami, S. M., Naderpour, H., Mortezaei, A., Sharbatdar, A., Lasowicz, N. and Jankowski, R. (2022), "The effectiveness of rubber bumpers in reducing the effect of earthquake-induced pounding between base-isolation buildings", Appl. Sci., 12(10), 4971. https://doi.org/10.3390/app12104971.
  19. Khatami, S.M, Naderpour, H. Nazem Razavi, S.M. Barros, R.C, Kakubczyk, A and Jankowski, R. (2020), "Study on methods to control interstory deflection", Geoscience, 10(2), 75. https://doi.org/10.3390/geosciences10020075.
  20. Li, A., Yang, C., Xie, L., Liu, L. and Zeng, D. (2017), "Research on the rational yield ratio of isolation system and its application to the design of seismically isolated reinforced concrete frame-core tube tall buildings",. Appl. Sci., 7(11), 1191. https://doi.org/10.3390/app7111191.
  21. Li, C. and Cao, L. (2019), "Active tuned tandem mass dampers for seismic structures", Earthq. Struct., 17(2), 143-162. https://doi.org/10.12989/eas.2019.17.2.143.
  22. Li, C. and Cao, L. (2019), "High performance active tuned mass damper inerter for structures under the ground acceleration", Earthq. Struct., 16(2), 149-163. https://doi.org/10.12989/eas.2019.16.2.149.
  23. Liu, C., Yang, W., Yan, Z., Lu, Z. and Luo, N. (2017), "Base pounding model and response analysis of base- isolated structures under earthquake excitation", Appl. Sci., 7(12), 1238. https://doi.org/10.3390/app7121238.
  24. Lopez-Garcia, D. and Soong, T.T. (2009), "Evaluation of current criteria in predicting the separation necessary to prevent seismic pounding between nonlinear hysteretic structural systems", Eng. Struct., 31(5), 1217-1229. https://doi.org/10.1016/j.engstruct.
  25. Matsagar, V.A. and Jangid, R.S. (2005), "Viscoelastic damper connected to adjacent structures involving seismic isolation", J. Civ. Eng. Manag., 11(4), 309-322. https://doi.org/10.1080/13923730.2005.9636362.
  26. Naderpour, H., Naji, N., Burkacki, D. and Jankowski, R. (2019), "Seismic response of high-rise buildings equipped with base isolation and non-traditional tuned mass dampers", Appl. Sci., 9(6), 1201. https://doi.org/10.3390/app9061201.
  27. Panayiotis, C. Polycarpou, P. and Komodromos, P. (2011), "Numerical investigation of potential mitigation measures for pounding of seismically isolated building", Earthq. Struct., 2(1), 1-24. https://doi.org/10.12989/eas.2011.2.1.001.
  28. 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, 81-100. https://doi.org/10.1002/eqe.2194.
  29. Rabiee, R. and Chae, Y. (2019), "Adaptive base isolation system to achieve structural resiliency under both short- and long-period earthquake ground motions", J. Intell. Mater. Syst. Struct., 30, 16-31. https://doi.org/10.1177/1045389X18806403.
  30. Westermo, B.D. (1989), "The dynamics of interstructural connection to prevent pounding", Earthq. Eng. Struct. Dyn., 18(5), 687-699. https://doi.org/10.1002/eqe.4290180508.
  31. Zhang, K.W., Hu, Z.G., Liu, H.M., Ouyang, H. and Zhang, J.F. (2019), "Non-Linear vibration isolators with unknown excitation and unmodelled dynamics: sliding mode active control", Appl. Sci., 9(17), 3567. https://doi.org/10.3390/app9173567.
  32. Zhang, W.S. and Xu, Y.L. (1999), "Dynamic characteristics and seismic response of adjacent buildings linked by discrete dampers", Earthq. Eng. Struct. Dyn., 28(10), 1163-1185. https://doi.org/10.1002/(SICI)1096-9845(199910)28:10<1163::AIDEQE860>3.0.CO;2-0.