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http://dx.doi.org/10.12989/sss.2021.27.6.1011

Control performance of sloped rolling-type isolators designed with stepwise variable parameters  

Wang, Shiang-Jung (Department of Civil and Construction Engineering, National Taiwan University of Science and Technology)
Sung, Yi-Lin (Department of Civil and Construction Engineering, National Taiwan University of Science and Technology)
Publication Information
Smart Structures and Systems / v.27, no.6, 2021 , pp. 1011-1029 More about this Journal
Abstract
With the same horizontal acceleration control performance, the horizontal displacement control performances of sloped rolling-type seismic isolators passively provided with stepwise variable parameters, as well as constant ones, are numerically investigated in this study. The first design possesses a smaller sloping angle with larger damping force at smaller horizontal isolation displacement and a larger sloping angle with smaller damping force at larger horizontal isolation displacement. In other words, this design has stepwise increased sloping angles and stepwise decreased damping force with increasing horizontal isolation displacement. The second design has an opposite design philosophy to the first one, i.e., it has stepwise decreased sloping angles and stepwise increased damping force with increasing horizontal isolation displacement. A series of numerical results present that for sloped rolling-type seismic isolators designed with a constant sloping angle and damping force, in general, the larger the damping force (in other words, the smaller the sloping angle), the smaller and the larger the horizontal maximum and residual displacement responses presented, respectively. The first and second designs with stepwise variable parameters each have its advantage for suppressing horizontal isolation displacement under far-field and pulse-like near-fault ground motions because of their larger energy dissipation capabilities designed at different stages. When the horizontal isolation displacement responses at the end of ground motions are still within the first slope rolling range with a larger sloping angle of the second design, as expected, adopting the second design can exhibit a better re-centering performance than adopting the first design. To have acceptable displacement control performances and without scarifying acceleration control performances under diverse seismic demands, compared with adopting the designs with constant parameters and the first design, adopting the second design could be an alternative solution and better choice.
Keywords
sloped rolling-type seismic isolator; stepwise variable; sloping angle; damping force; isolation displacement; residual displacement; near-fault;
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1 Abdollahzadeh, G. and Darvishi, R. (2017), "Cyclic behavior of DCFP isolators with elliptical surfaces and different frictions", Struct. Eng. Mech., Int. J., 64(6), 731-736. https://doi.org/10.12989/sem. 2017.64.6.731   DOI
2 Chen, P.C., Hsu S.C., Zhong, Y.J. and Wang, S.J. (2019), "Realtime hybrid simulation of smart base-isolated raised floor systems for high-tech industry", Smart Struct. Syst., Int. J., 23(1), 91-106. http://dx.doi.org/10.12989/sss.2019.23.1.091   DOI
3 Chopra, A.K. and Chintanapakdee, C. (2014), "Comparing response of SDF systems to near-fault and far-fault earthquake motions in the context of spectral regions", Earthq. Eng. Struct. Dyn., 30(12), 1769-1789. https://doi.org/10.1002/eqe.92   DOI
4 Baker, J.W. (2007), "Quantitative classification of near-fault ground motions using wavelet analysis", Bull. Seismol. Soc. Am., 97(5), 1486-1501. https://doi.org/10.1785/0120060255   DOI
5 Calvi, P.M., Moratti, M. and Calvi, G.M. (2008), "Seismic isolation devices based on sliding between surfaces with variable friction coefficient", Earthq. Spectra, 32(4), 2291-2315. https://doi.org/10.1193/ 091515EQS139M   DOI
6 Chang, S.P., Makris, N., Whittaker, A.S. and Thompson, A.C.T. (2002), "Experimental and analytical studies on the performance of hybrid isolation systems", Earthq. Eng. Struct. Dyn., 31(2), 421-443. https://doi.org/10.1002/eqe.117   DOI
7 Chen, P.C. and Wang, S.J. (2016), "Improved control performance of sloped rolling-type isolation devices using embedded electromagnets", Struct. Control Health Monitor., 24(1), e1853. https://doi.org/10.1002/stc.1853   DOI
8 Fenz, D.M. and Constantinou, M.C. (2006), "Behaviour of the double concave friction pendulum bearing", Earthq. Eng. Struct. Dyn., 35(11), 1403-1424. https://doi.org/10.1002/eqe.589   DOI
9 Constantinou, M.C., Mokha, A. and Reinhorn, A. (1990), "Teflon bearings in base isolation II: modeling", J. Struct. Eng. ASCE, 116(2), 455-474. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:2(455)   DOI
10 Feng, M.Q., Shinozuka, M. and Fujii, S. (1993), "Friction- controllable sliding isolation system", J. Eng. Mech. ASCE, 119(9), 1845-1864. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:9(1845)   DOI
11 Ghobarah, A. (2001), "Performance-based design in earthquake engineering: state of development", Eng. Struct., 23(8), 878-884. https://doi.org/10.1016/S0141-0296(01)00036-0   DOI
12 Harvey, Jr. P.S. and Kelly, K.C. (2016), "A review of rolling-type seismic isolation: historical development and future directions", Eng. Struct., 125, 521-531. https://doi.org/10.1016/j.engstruct.2016.07.031   DOI
13 He, W.L., Agrawal, A.K. and Yang, J.N. (2003), "Novel semiactive friction controller for linear structures against earthquakes", J. Struct. Eng. ASCE, 129(7), 941-950. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:7(941)   DOI
14 Hwang, J.S., Huang, Y.N., Hung, Y.H. and Huang, J.C. (2004), "Applicability of seismic protective systems to structures with vibration sensitive equipment", J. Struct. Eng. ASCE, 130(11), 1676-1684. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:11(1676)   DOI
15 Ozbulut, O.E. and Hurlebaus, S. (2010), "Fuzzy control of piezoelectric friction dampers for seismic protection of smart base isolated buildings", Bull. Earthq. Eng., 8(6), 1435-1455. https://doi.org/10.1007/s10518-010-9187-5   DOI
16 Makris, N. and Chang, S.P. (2000), "Effect of viscous, viscoplastic and friction damping on the response of seismic isolated structures", Earthq. Eng. Struct. Dyn., 29(1), 85-107. https://doi.org/10.1002/(SICI)1096-9845(200001)29:1<85::AIDEQE902>3.0.CO;2-N   DOI
17 Narasimhan, S. and Nagarajaiah, S. (2005), "A STFT semiactive controller for base isolated buildings with variable stiffness isolation systems", Eng. Struct., 27(4), 514-523. https://doi.org/10.1016/j.engstruct.2004.11.010   DOI
18 Narasimhan, S. and Nagarajaiah, S. (2006), "Smart base isolated buildings with variable friction systems: H∞ controller and SAIVF device", Earthq. Eng. Struct. Dyn., 35(8), 921-942. https://doi.org/10.1002/eqe.559   DOI
19 Panchal, V.R. and Jangid, R.S. (2008), "Variable friction pendulum system for near-fault ground motions", Struct. Control Health Monitor., 15(4), 568-584. https://doi.org/10.1002/stc.216   DOI
20 Ponzo, F.C., Cesare, A.D., Leccese, G. and Nigro, D. (2017), "Shake table testing on restoring capability of double concave friction pendulum seismic isolation systems", Earthq. Eng. Struct. Dyn., 46(14), 2337-2353. https://doi.org/10.1002/eqe.2907   DOI
21 Wang, S.J., Hwang, J.S., Chang, K.C., Shiau, C.Y., Lin, W.C., Tsai, M.S., Hong, J.X. and Yang, Y.H. (2014), "Sloped multiroller isolation devices for seismic protection of equipment and facilities", Earthq. Eng. Struct. Dyn., 43(10), 1443-1461. https://doi.org/10.1002/eqe.2404   DOI
22 Shahi, S.K. and Baker, J.W. (2014), "An efficient algorithm to identify strong-velocity pulses in multicomponent ground motions", Bull. Seismol. Soc. Am., 104(5), 2456-2466. http://dx.doi.org/10.1785/0120130191   DOI
23 Tadjbakhsh, I. and Lin, B.C. (1987), "Displacement-proportional friction (DPF) in base isolation", Earthq. Eng. Struct. Dyn., 15(7), 799-813. https://doi.org/10.1002/eqe.4290150702   DOI
24 Tsai, M.H., Wu, S.Y., Chang, K.C. and Lee, G.C. (2007), "Shaking table tests of a scaled bridge model with rolling type seismic isolation bearings", Eng. Struct., 29(9), 694-702. https://doi.org/10.1016/j.engstruct.2006.05.025   DOI
25 Wang, S.J., Yu, C.H., Lin, W.C., Hwang, J.S. and Chang, K.C. (2017), "A generalized analytical model for sloped rolling-type seismic isolators", Eng. Struct., 138, 434-446. https://doi.org/10.1016/j.engstruct.2016.12.027   DOI
26 Wang, S.J., Yu, C.H., Cho, C.Y. and Hwang, J.S. (2019), "Effects of design and seismic parameters on horizontal displacement responses of sloped rolling-type seismic isolators", Struct. Control Health Monitor., 26(5). https://doi.org/10.1002/stc.2342   DOI
27 Yurdakul, M. and Ates, S. (2018), "Stochastic responses of isolated bridge with triple concave friction pendulum bearing under spatially varying ground motion", Struct. Eng. Mech., Int. J., 65(6), 771-784. https://doi.org/10.12989/sem.2018.65.6.771   DOI
28 Ozbulut, O.E., Bitaraf, M. and Hurlebaus, S. (2011), "Adaptive control of base-isolated structures against near-field earthquakes using variable friction dampers", Eng. Struct., 33(12), 3143-3154. https://doi.org/10.1016/j.engstruct.2011.08.022   DOI
29 Wei, B., Wang, P., He, X., Zhang, Z. and Chen, L. (2017), "Effects of friction variability on a rolling-damper-spring isolation system", Earthq. Struct., Int. J., 13(6), 551-559. https://doi.org/10.12989/eas. 2017.13.6.551   DOI
30 Shahbazi, P. and Taghikhany, T. (2017), "Sensitivity analysis of variable curvature friction pendulum isolator under near-fault ground motions", Smart Struct. Syst., Int. J., 20(1), 23-33. https://doi.org/10.12989/sss. 2017.20.1.023   DOI
31 Lu, L.Y., Lin, G.L. and Kuo, T.C. (2008), "Stiffness controllable isolation system for near-fault seismic isolation", Eng. Struct., 30(3), 747-765. https://doi.org/10.1016/j.engstruct.2007.05.022   DOI
32 Iemura, H., Igarashi, A., Pradono, M.H. and Kalantari, A. (2019), "Negative stiffness friction damping for seismically isolated structures", Struct. Control Health Monitor., 13(2-3), 775-791. https://doi.org/10.1002/stc.111   DOI
33 Jangid, R.S. (2017), "Optimum friction pendulum system for near-fault motions", Eng. Struct., 27(3), 349-359. https://doi.org/10.1016/j.engstruct.2004.09.013   DOI
34 Fenz, D.M. and Constantinou, M.C. (2008), "Modeling triple friction pendulum bearings for response-history analysis", Earthq. Spectra, 24(4), 1011-1028. https://doi.org/10.1193/1.2982531   DOI
35 Hsu, T.Y., Huang, C.H. and Wang, S.J. (2021), "Early adjusting damping force for sloped rolling-type seismic isolators based on earthquake early warning information", Earthq. Struct., Int. J., 20(1), 39-53. http://dx.doi.org/10.12989/eas.2021.20.1.039   DOI
36 Kumar, M., Whittaker, A.W. and Constantinou, M.C. (2015), "Characterizing friction in sliding isolation bearings", Earthq. Eng. Struct. Dyn., 44(9), 1409-1425. https://doi.org/10.1002/eqe.2524   DOI
37 Lu, L.Y., Lee, T.Y., Juang, S.Y. and Yeh, S.W. (2013), "Polynomial friction pendulum isolators (PFPIs) for building floor isolation: An experimental and theoretical study", Eng. Struct., 56, 970-982. https://doi.org/10.1016/j.engstruct.2013.06.016   DOI
38 Wang, S.J., Sung, Y.L. and Hong, J.X. (2020), "Sloped rolling-type bearings designed with linearly variable damping force", Earthq. Struct., Int. J., 19(2), 129-144. http://dx.doi.org/10.12989/eas.2020. 19.2.129   DOI
39 Lee, G.C., Ou, Y.C., Niu, T., Song, J. and Liang, Z. (2010), "Characterization of a roller seismic isolation bearing with supplemental energy dissipation for highway bridges", J. Struct. Eng. ASCE, 136(5), 502-510. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000136   DOI
40 Liu, Y., Matsuhisa, H. and Utsuno, H. (2008), "Semi-active vibration isolation system with variable stiffness and damping control", J. Sound Vib., 313(1-2), 16-28. https://doi.org/10.1016/j.jsv.2007.11.045   DOI