The vertical component of seismic acceleration, often overlooked in ordinary structures, plays a role of primary importance in the case of bridges and viaducts. In particular, it induces both the appearance of uncommon stress conditions on vertical structures, and in some cases, it is a really important factor for bearing device capacity of girders. In fact, seismic excitations may give rise to great relative displacement between deck and piers or abutment in bridges. Among many structural damages of bridges during past earthquakes, the unseating failure is one of the most severe and recurring damages of girder bridges. When relative displacements exceed a pre-assigned seating length, the unseating of span will then take place. Therefore, for seismic design of new bridges or for a check of existing bridge, to take into account the vertical component due to seismic acceleration is an important issue. This paper presents a numerical analyses about damage effects of near-fault seismic events on existing bridge performances. The near-fault earthquakes are characterised by own some fundamental characteristics, such as forward-directivity phenomena, relatively high acceleration amplitudes and elastic response spectra, which are very different with respect to the reference ones defined in the codes. With this background, the purpose of this paper is to highlight the role of this kind of analysis of understanding the response behavior of girder bridges subjected to near-fault earthquakes. Furthermore, a case study and parameter studies are performed to evaluate its effectiveness in preventing bridge spans from unseating failure and protecting the piers and the abutment of bridges from damage.
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Recupero A, Spinella N, Colajanni P, Scilipoti CD (2014) Increasing the capacity of existing bridges by using unbonded prestressing technology: a case study. Adv Civ Eng. https://doi.org/10.1155/2014/840902
Colajanni P, Recupero A, Spinella N (2015) Shear strength degradation due to flexural ductility demand in circular RC columns. Bull Earthq Eng 13(6):1795–1807. https://doi.org/10.1007/s10518-014-9691-0
Li X, Li ZX, Crewe AJ (2018) Nonlinear seismic analysis of a high-pier, long-span, continuous RC frame bridge under spatially variable ground motions. Soil Dyn Earthq Eng 114:298–312. https://doi.org/10.1016/J.SOILDYN.2018.07.032
Wei B, Zuo C, He X, Jiang L, Wang T (2018) Effects of vertical ground motions on seismic vulnerabilities of a continuous track-bridge system of high-speed railway. Soil Dyn Earthq Eng 115:281–290. https://doi.org/10.1016/J.SOILDYN.2018.08.022
Chomchuen P, Boonyapinyo V (2017) Incremental dynamic analysis with multi-modes for seismic performance evaluation of RC bridges. Eng Struct 132:29–43. https://doi.org/10.1016/J.ENGSTRUCT.2016.11.026
Uniform Building Code (1997) International conference of building officials, Whittier, California
Sommerville PG, Smith NF, Graves RW, Abrahamson NA (1987) Modification of empirical strong ground motion attenuation relations to include the amplitude and duration effects of rupture directivity. Seismol Res Lett 68(1):199–222
Bray JD, Rodriguez-Marek A (2004) Characterization of forward-directivity ground motions in the near-fault region. Soil Dyn Earthq Eng 24(11):815–828. https://doi.org/10.1016/J.SOILDYN.2004.05.001
Ghahari SF, Jahankhah H, Ghannad MA (2010) Study on elastic response of structures to near-fault ground motions through record decomposition. Soil Dyn Earthq Eng 30(7):536–546. https://doi.org/10.1016/J.SOILDYN.2010.01.009
Somerville PG (2003) Magnitude scaling of the near fault rupture directivity pulse. Phys Earth Planet Inter 137(1–4):201–212. https://doi.org/10.1016/S0031-9201(03)00015-3
Bozorgnia Y, Bertero VV, Vitelmo V (2004) Earthquake engineering: from engineering seismology to performance-based engineering. CRC Press, Boca Raton
Elnashai AS, Papazoglou AJ (1997) Procedure and spectra for analysis of RC structures subjected to strong vertical earthquake loads. J Earthq Eng 1(1):121–155. https://doi.org/10.1080/13632469708962364
Newmark NM, Blume JA, Kapur KK (1973) Seismic design spectra for nuclear power plants. J Power Div 99(2):287–303
FEMA (2010) Earthquake-resistant design concepts: an introduction to the NEHRP recommended seismic provisions for new buildings and other structures. https://doi.org/10.4231/d3t727g79
Uniform Building Code (1994) International conference of building officials, Whittier, California
Italian MIT (2018) Nuove Norme tecniche per le costruzioni. Gazzetta Ufficiale, vol 42. Rome (in Italian)
CEN (2004) Eurocode 8: design of structures for earthquake resistance, part 2. Bridges, Brussels
Recupero A, D’Aveni A, Ghersi A (2003) N-M-V interaction domains for box and I-shaped reinforced concrete members. ACI Struct J. https://doi.org/10.14359/12445
Colajanni P, La Mendola L, Recupero A, Spinella N (2017) Stress field model for strengthening of shear-flexure critical RC beams. J Compos Constr. https://doi.org/10.1061/(asce)cc.1943-5614.0000821
Quaranta G, Trentadue F, Marano GC (2017) Closed-form approximation of the axial force-bending moment interaction diagram for hollow circular reinforced concrete cross-sections. Eng Struct 153:516–524. https://doi.org/10.1016/J.ENGSTRUCT.2017.10.042
Spinella N (2013) N-M-χ interaction for arbitrary cross section under biaxial bending and axial load. Pollack Period 8(3):87–100. https://doi.org/10.1556/Pollack.8.2013.3.9
Gentile RD (2018) Simplified analytical moment-curvature relationship for hollow circular RC cross-sections. Earthq Struct 15(4):419–429. https://doi.org/10.12989/EAS.2018.15.4.419
Recupero A, Spinella N, Tondolo F (2018) Failure analysis of corroded RC beams subjected to shear-flexural actions. Eng Fail Anal. https://doi.org/10.1016/j.engfailanal.2018.06.025
Recupero A, Spinella N (2019) Experimental tests on corroded prestressed concrete beams subjected to transverse load. Struct Concr. https://doi.org/10.1002/suco.201900242
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Falsone, G., Recupero, A. & Spinella, N. Effects of near-fault earthquakes on existing bridge performances. J Civil Struct Health Monit (2020) doi:10.1007/s13349-020-00378-4
- Seismic analysis of bridges
- Vertical seismic component
- Near-fault earthquakes