Low cycle fatigue effects in integral bridge steel H-piles under seismic displacement reversals

Date

2013-12-01

Author

Dicleli, Murat

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

181
views

0
downloads

Under the effect of medium and large intensity ground motions, the seismically-induced lateral cyclic displacements in steel H-piles of integral bridges (IBs) could be considerable. As a result, the piles may experience cyclic plastic deformations following a major earthquake. This may result in the reduction of their service life due to low-cycle fatigue effects. Accordingly, low cycle fatigue in integral bridge piles is investigated under seismic effects in this study. For this purpose, IBs with two spans are considered. Three dimensional nonlinear structural models of these IBs including dynamic soil-bridge interaction effects are built. Then, time history analyses of the IB models are conducted using a set of ground motions with various intensities representing small, medium and large intensity earthquakes. In the analyses, the effect of various properties such as soil stiffness, pile size and orientation are considered. The magnitude of cyclic displacements of steel H piles are then determined from the analyses results. In addition, using the existing data from experimental tests of steel H-piles, a fatigue damage model is formulated. This fatigue damage model is used together with the cyclic displacement obtained from seismic analyses to determine the remaining service life of IBs under cyclic displacement due to thermal effects. The fatigue analyses results reveals that earthquakes with large intensity may reduce the service life of the piles with non-compact sections.

Subject Keywords

Building and Construction

URI

https://hdl.handle.net/11511/42432

Journal

Bridge Structures

DOI

https://doi.org/10.3233/brs-130064

Collections

Department of Engineering Sciences, Article

Suggestions

OpenMETU
Core

Low Cycle Fatigue Effects in Integral Bridge Piles Under Seismic Load Dicleli, Murat (2010-08-30) Under the effect of medium and large intensity ground motions, the seismically-induced lateral cyclic displacements in steel H-piles of integral bridges (IBs) could be considerable. As a result, the piles may experience cyclic plastic deformations following a major earthquake. This may result in the reduction of their service life due to low-cycle fatigue effects. Accordingly, low cycle fatigue in integral bridge piles is investigated under seismic effects in this study. For this purpose, IBs with two spans...
Low cycle fatigue performance of integral bridge steel H-piles subjected to earthquakes Dicleli, Murat (2014-11-26) Under the effect of medium and large intensity ground motions, the seismically-induced lateral cyclic displacements in steel H-piles of integral bridges (IBs) could be considerable. As a result, the piles may experience cyclic plastic deformations following a major earthquake. This may result in the reduction of their service life due to low-cycle fatigue effects. Accordingly, low cycle fatigue in integral bridge piles is investigated under seismic effects in this study For this purpose, an IB with two span...
Low Cycle Fatigue Effects in Integral Bridge Steel H-Piles Under Earthquake Induced Strain Reversals Dicleli, Murat (Springer, 2015-01-01) Under the effect of medium and large intensity ground motions, the seismically-induced lateral cyclic displacements and ensuing bending strains in steel H-piles of integral bridges (IBs) could be considerable. As a result, the piles may experience cyclic plastic deformations following a major earthquake. This may result in the reduction of their service life due to low-cycle fatigue effects. Accordingly, low cycle fatigue in integral bridge piles is investigated under seismic effects in this study. For this...
Target damage level assessment for seismic performance evaluation of two-column reinforced concrete bridge bents Yilmaz, Taner; Caner, Alp (IOS Press, 2012-01-01) Displacement capacity verification analysis is usually used to evaluate the level of displacement at which structural elements reach their inelastic deformation capacities. In engineering practice, a modified version of displacement capacity analysis is used in the seismic performance assessment of bridge structures as an alternative to ductility and drift based approaches. In this seismic performance evaluation for a given target damage level, top bent displacement demand should not exceed a certain fracti...
Effect of Foundation Soil Stiffness on the Seismic Performance of Integral Bridges Dicleli, Murat (Informa UK Limited, 2011-05-01) In this study, the effect of foundation soil stiffness on the seismic performance of integral bridges (IBs) is investigated. For this purpose, nonlinear structural models of a two-span TB with four different foundation soil stiffness types (loose, medium, medium-dense and dense sands) are built. In the nonlinear structural models, nonlinear soil structure interaction including free-field effects is considered. Then, the nonlinear time history analyses of the TB models are conducted using a set of ground mot...

Citation Formats

M. Dicleli, “Low cycle fatigue effects in integral bridge steel H-piles under seismic displacement reversals,” Bridge Structures, pp. 185–190, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42432.