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Article

Influence of Multiple-Support Excitation on Seismic Response of Reinforced Concrete Arch Bridges

Department of Engineering Mechanics, Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia
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Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(1), 17; https://doi.org/10.3390/app10010017
Received: 1 November 2019 / Revised: 6 December 2019 / Accepted: 16 December 2019 / Published: 18 December 2019
(This article belongs to the Special Issue Bridge Dynamics)
Although post-earthquake observations identified spatial variation of ground motion (i.e., multiple-support excitation) as a frequent cause of the unfavorable response of long-span bridges, this phenomenon is often not taken into account in seismic design to simplify the calculation procedure. This study investigates the influence of multiple-support excitation accounting for coherency loss and wave-passage effects on the seismic response of reinforced concrete deck arch bridges of long spans founded on rock sites. Parametric numerical study was conducted using the time-history method, the response spectrum method, and a simplified procedure according to the European seismic standards. Results showed that multiple-support excitation had a detrimental influence on response of almost all analyzed bridges regardless of considered arch span. Both considered spatial variation effects, acting separately or simultaneously, proved to be very important, with their relative significance depending on the response values and arch locations analyzed and seismic records used. Therefore, it is suggested that all spatially variable ground-motion effects are taken into account in seismic analysis of similar bridges. View Full-Text
Keywords: seismic analysis; multiple-support excitation; spatial variability; large-span reinforced concrete deck arch bridges; time-history method; generation of ground motion time histories seismic analysis; multiple-support excitation; spatial variability; large-span reinforced concrete deck arch bridges; time-history method; generation of ground motion time histories
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MDPI and ACS Style

Savor Novak, M.; Lazarevic, D.; Atalic, J.; Uros, M. Influence of Multiple-Support Excitation on Seismic Response of Reinforced Concrete Arch Bridges. Appl. Sci. 2020, 10, 17. https://doi.org/10.3390/app10010017

AMA Style

Savor Novak M, Lazarevic D, Atalic J, Uros M. Influence of Multiple-Support Excitation on Seismic Response of Reinforced Concrete Arch Bridges. Applied Sciences. 2020; 10(1):17. https://doi.org/10.3390/app10010017

Chicago/Turabian Style

Savor Novak, Marta; Lazarevic, Damir; Atalic, Josip; Uros, Mario. 2020. "Influence of Multiple-Support Excitation on Seismic Response of Reinforced Concrete Arch Bridges" Appl. Sci. 10, no. 1: 17. https://doi.org/10.3390/app10010017

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