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Volume 25 Issue 3
May  2012
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Journal of Southwest Jiaotong University  > 2012  >  25(3): 379-386.
YE Huawen, XU Xun, QIANG Shizhong, HOU Suwei. Fatigue Design Parameters for Orthotropic Steel Decks of Single Plane Cable-Stayed Bridges[J]. Journal of Southwest Jiaotong University, 2012, 25(3): 379-386. doi: 10.3969/j.issn.0258-2724.2012.03.005
Citation: YE Huawen, XU Xun, QIANG Shizhong, HOU Suwei. Fatigue Design Parameters for Orthotropic Steel Decks of Single Plane Cable-Stayed Bridges[J]. Journal of Southwest Jiaotong University, 2012, 25(3): 379-386. doi: 10.3969/j.issn.0258-2724.2012.03.005
shu

Fatigue Design Parameters for Orthotropic Steel Decks of Single Plane Cable-Stayed Bridges

doi: 10.3969/j.issn.0258-2724.2012.03.005
  • Received Date: 14 Jun 2011
  • Publish Date: 25 Jun 2012
    Abstract
  • Experiment and finite element analysis (FEA) were conducted on the orthotropic steel decks of two single plane cable-stayed bridges in Chongqing municipality, China, to verify the fatigue design parameters. A full scale specimen with the actual connection details of the longitudinal ribs, crossbeams and deck plates was used for fatigue test. Vertical and horizontal fatigue loads were applied to the specimen under equivalent applied stresses for 20 million cycles. FEA was done to extend the ranges of design parameters verified by fatigue tests, such as cutout shape (apple-shaped,key-shaped and circular), and thicknesses of plates and deck pavement. The experimental and FEA results shown that the crossbeam and pavement thickness played a significant role on fatigue performances of the orthotropic steel decks. The principal tension stress (13.7 MPa) near the apple-shaped cutout was the smallest compared with those near the key-shaped and circular cutouts, so that the apple-shaped cutout was the best in terms of fatigue performances. The plate at least 16 mm thick and the apple-shaped cutout were recommended for the crossbeam of the orthotropic steel decks.

     

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