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http://dx.doi.org/10.12989/sss.2021.27.3.447

Seismic isolation of railway bridges using a self-centering pier  

Xia, Xiushen (School of Civil Engineering, Lanzhou Jiaotong University)
Zhang, Xiyin (School of Civil Engineering, Lanzhou Jiaotong University)
Shi, Jun (School of Civil Engineering, Lanzhou Jiaotong University)
Tang, Jingyao (School of Civil Engineering, Lanzhou Jiaotong University)
Publication Information
Smart Structures and Systems / v.27, no.3, 2021 , pp. 447-455 More about this Journal
Abstract
Earthquakes cause severe damages to bridge structures, and rocking isolation of piers has become a superior option for the seismic protection of bridges during earthquakes. A seismic isolation method with free rocking mode is proposed for railway bridge piers with medium height. Experimental and numerical analysis are conducted to evaluate the seismic performance of the rocking-isolated bridge pier. Shaking table test is carried out with a scaled model by using three strong input earthquake records. The measured data includes displacement, acceleration and time history response of the pier-top and the bending moment of the pier-bottom. Test results show that the expected uplift and rocking of the isolated pier occur under strong earthquakes and the rocking-isolated pier has self-centering capacity. Slight damage appears at the collision surface between pier and base due to pier uplift, while there is no damage in the pier body. The bending moment of pier-bottom is less affected by the spectrum of input ground motions. The two-spring model is provided to simulate the isolated pier with free rocking mode under earthquakes. A seismic response analysis model for the rocking-ioslated pier is established with the assistance of OpenSees platform. The simulated results agree well with the measured results by shaking table test. Therefore, the seismic isolation method with a self-centering pier is worthy of promotion for railway bridges in high seismic risk regions.
Keywords
seismic isolation; railway bridges; free rocking mode; self-centering pier; shaking table test and numerical simulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Beck, J.L. and Skinner, R.I. (1973), "The seismic response of a reinforced concrete bridge pier designed to step", Earthq. Eng Struct. Dyn., 2(4), 343-358. https://doi.org/10.1002/eqe.4290020405   DOI
2 Cancellara, D. and De Angelis, F. (2017), "Assessment and dynamic nonlinear analysis of different base isolation systems for a multi-storey RC building irregular in plan", Comput. Struct., 180, 74-88. https://doi.org/10.1016/j.compstruc.2016.02.012   DOI
3 Chen, Y.-H., Liao, W.-H., Lee, C.-L. and Wang, Y.-P. (2006), "Seismic isolation of viaduct piers by means of a rocking mechanism", Earthq. Eng. Struct. Dyn., 35(6), 713-736. https://doi.org/10.1002/eqe.555   DOI
4 Hung, H.-H., Liu, K.-Y., Ho, T.-H. and Chang, K.-C. (2011), "An experimental study on the rocking response of bridge piers with spread footing foundations", Earthq. Eng. Struct. Dyn., 40(7), 749-769. https://doi.org/10.1002/eqe.1057   DOI
5 Iranmanesh, A., Bassam, A. and Ansari, F. (2009), "Post earthquake performance monitoring of a typical highway overpass bridge", Smart Struct. Syst., Int. J., 5(4), 495-505. https://doi.org/10.12989/sss.2009.5.4.495   DOI
6 Kolozvari, K., Orakcal, K. and Wallace, J.W. (2018), "New opensees models for simulating nonlinear flexural and coupled shear-flexural behavior of RC walls and columns", Comput. Struct., 196, 246-262. https://doi.org/10.1016/j.compstruc.2017.10.010   DOI
7 Liu, J.-L., Zhu, S., Xu, Y.-L. and Zhang, Y. (2011), "Displacement-based design approach for highway bridges with SMA isolators", Smart Struct. Syst., Int. J., 8(2), 173-190. https://doi.org/10.12989/sss.2011.8.2.173   DOI
8 Marriott, D., Pampanin, S. and Palermo, A. (2009), "Quasi-static and pseudo-dynamic testing of unbonded post-tensioned rocking bridge piers with external replaceable dissipaters", Earthq. Eng. Struct. Dyn., 38(3), 331-354. https://doi.org/10.1002/eqe.857   DOI
9 Rele, R.R., Dammala, P.K., Bhattacharya, S., Balmukund, R. and Mitoulis, S. (2019), "Seismic behaviour of rocking bridge pier supported by elastomeric pads on pile foundation", Soil Dyn. Earthq. Eng., 124, 98-120. https://doi.org/10.1016/j.soildyn.2019.05.018   DOI
10 Marriott, D., Pampanin, S. and Palermo, A. (2011), "Biaxial testing of unbonded post-tensioned rocking bridge piers with external replacable dissipaters", Earthq. Eng. Struct. Dyn., 40(15), 1723-1741. https://doi.org/10.1002/eqe.1112   DOI
11 Palermo, A., Pampanin, S. and Marriott, D. (2007), "Design, modeling, and experimental response of seismic resistant bridge piers with posttensioned dissipating connections", J. Struct. Eng., 133(11), 1648-1661. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:11(1648)   DOI
12 Vassiliou, M.F. and Makris, N. (2012), "Analysis of the rocking response of rigid blocks standing free on a seismically isolated base", Earthq. Eng. Struct. Dyn., 41(2), 177-196. https://doi.org/10.1002/eqe.1124   DOI
13 Du, X.-L., Zhou, Y.-L., Han, Q. and Jia, Z.-L. (2019), "Shaking table tests of a single-span freestanding rocking bridge for seismic resilience and isolation", Adv. Struct. Eng., 22(15) 3222-3233. https://doi.org/10.1177/1369433219859410   DOI
14 Roh, H. and Reinhorn, A.M. (2010), "Modeling and seismic response of structures with concrete rocking columns and viscous dampers", Eng. Struct., 32(8), 2096-2107. https://doi.org/10.1016/j.engstruct.2010.03.013   DOI
15 Solberg, K., Mashiko, N., Mander, J.B. and Dhakal, R.P. (2009), "Performance of a damage-protected highway bridge pier subjected to bidirectional earthquake attack", J. Struct. Eng., 135(5), 469-478. https://doi.org/10.1061/(ASCE)0733-9445(2009)135:5(469)   DOI
16 Taniguchi, T. (2002), "Non-linear response analyses of rectangular rigid bodies subjected to horizontal and vertical ground motion", Earthq. Eng. Struct. Dyn., 31(8), 1481-1500. https://doi.org/10.1002/eqe.170   DOI
17 Thomaidis, I.M., Kappos, A.J. and Camara, A. (2020), "Dynamics and seismic performance of rocking bridges accounting for the abutment-backfill contribution", Earthq. Eng. Struct. Dyn., 49(12), 1161-1179. https://doi.org/10.1002/eqe.3283   DOI
18 Wei, B., Li, C., Jia, X., He, X. and Yang, M. (2019), "Effects of shear keys on seismic performance of an isolation system", Smart Struct. Syst., Int. J., 24(3), 345-360. https://doi.org/10.12989/sss.2019.24.3.345   DOI
19 Zhou, Y.-L., Han, Q., Du, X.-L. and Jia, Z.-L. (2019), "Shaking table tests of post-tensioned rocking bridge with double-column bents", J. Bridge Eng., 24(8), 04019080. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001456   DOI
20 Chen, Y., Larkin, T. and Chouw, N. (2017), "Experimental assessment of contact forces on a rigid base following footing uplift", Earthq. Eng. Struct. Dyn., 46(11), 1835-1854. https://doi.org/10.1002/eqe.2885   DOI
21 Palermo, A. and Pampanin, S. (2008), "Enhanced seismic performance of hybrid bridge systems: comparison with traditional monolithic solutions", J. Earthq. Eng., 12(8), 1267-1295. https://doi.org/10.1080/13632460802003819   DOI
22 Yim, S.C.S. and Chopra, A.K. (1984), "Dynamics of Structures on two-spring foundation allowed to uplift", J. Eng. Mech., 110(7), 1124-1146. https://doi.org/10.1061/(ASCE)0733-9399(1984)110:7(1124)   DOI
23 Cheng, C.-T. and Chen, F.-L. (2014), "Seismic performance of a rocking bridge pier substructure with frictional hinge dampers", Smart Struct. Syst., Int. J., 14(4), 501-516. https://doi.org/10.12989/sss.2014.14.4.501   DOI
24 Chou, C.-C. and Chen, Y.-C. (2006), "Cyclic tests of post-tensioned precast CFT segmental bridge columns with unbonded strands", Earthq. Eng. Struct. Dyn., 35(2), 159-175. https://doi.org/10.1002/eqe.512   DOI
25 Diamantopoulos, S. and Fragiadakis, M. (2019), "Seismic response assessment of rocking systems using single degree-of-freedom oscillators", Earthq. Eng. Struct. Dyn., 48(7), 689-708. https://doi.org/10.1002/eqe.3157   DOI
26 Cheng, C.-T. (2008), "Shaking table tests of a self-centering designed bridge substructure", Eng. Struct., 30(12), 3426-3433. https://doi.org/10.1016/j.engstruct.2008.05.017   DOI
27 Anastasopoulos, I., Loli, M., Georgarakos, T. and Drosos, V. (2013), "Shaking table testing of rocking-isolated bridge pier on sand", J. Earthq. Eng., 17(1), 1-32. https://doi.org/10.1080/13632469.2012.705225   DOI
28 Zheng, Y., Dong, Y., Chen, B. and Anwar, G.A. (2019), "Seismic damage mitigation of bridges with self-adaptive SMA-cable-based bearings", Smart Struct. Syst., Int. J., 24(1), 127-139. http://dx.doi.org/10.12989/sss.2019.24.1.127   DOI
29 Palmeri, A. and Makris, N. (2008), "Linearization and first-order expansion of the rocking motion of rigid blocks stepping on viscoelastic foundation", Earthq. Eng. Struct. Dyn., 37, 1065-1080. https://doi.org/10.1002/eqe.799   DOI
30 Priestley, M.J.N., Seible, F. and Calvi, G.M. (1996), Seismic Design and Retrofit of Bridge, John Wiley & Sons, Inc.
31 Bachmann, J.A., Strand, M., Vassiliou, M.F., Broccardo, M. and Stojadinovic, B. (2017), "Is rocking motion predictable?", Earthq. Eng. Struct. Dyn., 47(2), 535-552. https://doi.org/10.1002/eqe.2978   DOI