Fracture mechanics approach to predict the low cycle fatigue life of steel H-piles in integral bridge

Date

2021-01-01

Author

Karalar, M.
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

165
views

0
downloads

© 2021 Taylor & Francis Group, LondonIntegral abutment bridges (IABs) are those bridges without expansion joints. A single row of steel H-piles (SHPs) is commonly used at the thin and stub abutments of IABs to form a flexible support system at the bridge ends to accommodate thermal-induced displacement of the bridge. Consequently, as the IAB expands and contracts due to temperature variations, the SHPs supporting the abutments are subjected to cyclic lateral displacements, which may eventually lead to low-cycle fatigue (LCF) failure of the piles. In this study, to obtain the LCF life of SHP commonly used in IABs, fracture mechanics approaches is used. For these purpose, experimental tests are conducted on several SHP specimens to determine their LCF life under thermal-induced cyclic flexural strains. In the experimental tests, the specimens are subjected to lateral displacements (or flexural strain cycles) with various amplitudes in the absence and presence of a typical axial load. Next, the fracture mechanics approach is used only for the prediction of the large strain amplitude, εa that the SHP specimens can sustain before their failure takes place due to LCF effects and compared with the test results. Considering the inherent scatter in fatigue tests, a reasonably good agreement is found between the calculated fatigue lives and those from test results.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85117608456&origin=inward
https://hdl.handle.net/11511/99363

DOI

https://doi.org/10.1201/9780429279119-530

Conference Name

10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020

Collections

Department of Engineering Sciences, Conference / Seminar

Suggestions

OpenMETU
Core

Low-cycle fatigue in steel H-piles of integral bridges; a comparative study of experimental testing and finite element simulation Karalar, Memduh; Dicleli, Murat (2020-01-10) Integral abutment bridges (IABs) are those bridges without expansion joints. A single row of steel H-piles (SHPs) is commonly used at the thin and stub abutments of IABs to form a flexible support system at the bridge ends to accommodate thermal-induced displacement of the bridge. Consequently, as the IAB expands and contracts due to temperature variations, the SHPs supporting the abutments are subjected to cyclic lateral (longitudinal) displacements, which may eventually lead to low-cycle fatigue (LCF) fai...
Seismic performance of multisimple-span bridges retrofitted with link slabs Caner, Alp; Zia, P. (American Society of Civil Engineers (ASCE), 2002-03-01) During earthquakes multisimple-span bridges are vulnerable to span separation at their expansion joints. A common way of preventing unseating of spans is to have cable or rod restrainers that provide connections between adjacent spans. Alternatively, dislocation of the girders can be controlled with a link slab that is the continuous portion of the bridge deck between simple spans. Seismic retrofit with link slab should be more cost-effective than the existing methods when it is performed during redecking o...
Simulation of low cycle fatigue performance of steel H piles via finite element approach Karalar, Memduh; Dicleli, Murat (2016-06-30) Integral bridges are jointless bridges where the superstructure is connected monolithically with the abutments. Due to seasonal temperature changes the abutments are pushed against the approach fill and then pulled away, causing lateral displacements at the top of the piles that support the abutments as shown in Fig. 1. This may result in the reduction of their service life due to low-cycle fatigue effects. Although bridge engineers (Dicleli, 2000, French et al. 2004) have already predicted that low cycle f...
Low-cycle fatigue performance of steel h-piles in integral bridges Karalar, Memduh; Dicleli, Murat; Department of Engineering Sciences (2014) Integral bridges are jointless bridges where the superstructure is connected monolithically with the abutments. Due to seasonal temperature changes the abutments are pushed against the approach fill and then pulled away, causing lateral displacements at the top of the piles that support the abutments. This may result in the reduction of their service life due to low-cycle fatigue effects. In this research, both analytical and experimental studies are conducted to investigate the effect of thermal induced cy...
Structural monitoring and analysis of steel truss railroad bridges Akın, Tuğba; Türer, Ahmet; Department of Civil Engineering (2012) Railroad bridges are the most important connection parts of railroad networks. These bridges are exposed to heavier train loads compared to highway bridges as well as various detrimental ambient conditions during their life span. The railroad bridges in Turkey are mostly constructed during the late Ottoman and first periods of the Turkish Republic; therefore, they are generally close to about 100 years of age; their inspection and maintenance works are essential. Structural health monitoring (SHM) technique...

Citation Formats

M. Karalar and M. Dicleli, “Fracture mechanics approach to predict the low cycle fatigue life of steel H-piles in integral bridge,” presented at the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020, Sapporo, Japonya, 2021, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85117608456&origin=inward.