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Improved effective damping equation for equivalent linear analysis of seismic-isolated bridges
Date
2010-07-25
Author
Dicleli, Murat
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In this paper, an improved effective damping (ED) equation is proposed to obtain more reasonable estimates of the actual nonlinear response of seismic-isolated bridges (SIB) using equivalent linear (EL) analysis procedure. For this purpose, first, the EL analysis results using AASHTO's ED equation is evaluated. The effect of several parameters such as substructure stiffness, isolator and ground motion properties are considered in the evaluation. It is found that AASHTO's ED equation should incorporate the effective period of the SIB and isolator properties for a more accurate estimation of the seismic response quantities. A new ED equation that includes such parameters is formulated and found to improve the accuracy of the EL analysis.
Subject Keywords
Civil engineering
,
Engineering geology
,
Seismology
,
Tsunamis
URI
https://hdl.handle.net/11511/87142
Conference Name
9th US National and 10th Canadian Conference on Earthquake Engineering 2010
Collections
Department of Engineering Sciences, Conference / Seminar
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Improved effective damping equation for equivalent linear analysis of seismic-isolated bridges
Dicleli, Murat (SAGE Publications, 2006-02-01)
In this study, an improved effective damping (ED) equation is proposed to obtain more reasonable estimates of the actual nonlinear response of seismic-isolated bridges (SIB) using equivalent linear (EL) analysis procedure. For this purpose, first the EL analysis results using AASHTO's ED equation is evaluated using harmonic and seismic ground motions. The effect of several parameters such as substructure stiffness, isolator properties, and the intensity and frequency characteristics of the ground motion are...
Live load distribution equations for integral bridge substructures
Erhan, Semih; Dicleli, Murat (Elsevier BV, 2009-05-01)
In this study, live load distribution equations (LLDEs) for integral bridge (IB) substructures are developed. For this purpose, numerous 3-D and corresponding 2-D structural models of typical IBs are built and analyzed under AASHTO live load. In the analyses, the effect of various superstructure and substructure properties such as span length, girder spacing, girder stiffness, abutment height, pile size, pile spacing and foundation soil stiffness are considered. The results from the 2-D and 3-D analyses are...
Investigation of the Applicability of AASHTO LRFD Live Load Distribution equations for Integral Bridge Substructures
Erhan, Semih; Dicleli, Murat (SAGE Publications, 2009-08-01)
In this study, applicability of the AASHTO LRFD girder live load distribution equations (LLDEs) for integral bridge (IB) abutments and piles is investigated. For this Purpose, numerous 3-D and corresponding 2-D structural models of typical IBs are built and analyzed under AASHTO LRFD live load. In the analyses, the effect of various superstructure properties such as span length, slab thickness, girder spacing and stiffness are considered. The results from the 2-D and 3-D analyses are then used to calculate ...
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Kerpiççii Kara , Sibel; Yanmaz, Ali Melih; Department of Civil Engineering (2009)
Deterministic scour prediction equations for bridge abutments do not involve uncertainties coming from scouring parameters and they only consider effects of hydraulic parameters. However, in order to safely design bridge abutments, treatment of these uncertainties and evaluation of possible risks are required. Two artificial neural network (ANN) models are constructed to describe scouring phenomenon using the parameters of two different equations. The equation to be used in the reliability analysis is then ...
Distribution of live load effects in integral bridge abutments and piles
Dicleli, Murat (2010-07-15)
In this study, live load distribution equations (LLDEs) for integral bridge (IB) substructures are developed. For this purpose, numerous 3-D and corresponding 2-D structural models of typical IBs are built and analyzed under AASHTO live load. In the analyses, the effect of various superstructure and substructure properties such as span length, girder spacing, girder stiffness, abutment height, pile size, pile spacing and foundation soil stiffness are considered. The results from the 2-D and 3-D analyses are...
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BibTeX
M. Dicleli, “Improved effective damping equation for equivalent linear analysis of seismic-isolated bridges,” Toronto, Canada, 2010, vol. 8, p. 6169, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87142.
