A Retrofitted Case Study of Orthotropic Steel Bridge Decks Strengthened with Sandwich Plate System

Abstract:

Some retrofitted methods are introduced, and in these retrofitted methods, a strengthening case of using the sandwich plate system (SPS) to strengthen the orthotropic steel bridge deck of a suspend bridge was studied. A local finite element model is established by ANSYS based on an orthotropic steel bridge deck sample, stress distribution of deck due to the wheel load of the vehicle defined in China current code were analyzed under different loading conditions, and the strengthening effect with SPS was evaluated. The influence of the thickness and elastic modulus of elastic sandwich on the transverse stress of deck was analyzed. The results show that, compared with the orthotropic steel bridge deck before strengthened, the stress peak is decreased obviously without new welding residual stress be generated, and the fatigue resistant of bridge deck is increased apparently after the deck strengthened by SPS. The variation of the thickness and elastic modulus of the elastic sandwich have little influence on the stress behaviours of the orthotropic steel bridge deck.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 866-870
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.866
• Online since: May 2011
• Authors: De Ying Zhang, Yun Sheng Li, Chun Lei Cui
• Keywords: Fatigue Resistance, Orthotropic Steel Bridge Deck, Rib-to-Deck Joint, Sandwich Plate System (SPS), Strengthening

References

[1] Zhi-Gang Xiao, Kentaro Yamada, Samol Ya, Xiao-Ling Zhao. Stress analyses and fatigue evaluation of rib-to-deck joints in steel orthotropic decks [J]. International Journal of Fatigue, 2008; 30(8): 1387–1397.

DOI: 10.1016/j.ijfatigue.2007.10.008

[2] Jun-Hyeok Choi, Do-Hwan Kim. Stress characteristics and fatigue crack behavior of the longitudinal rib-to-cross beam joints in an orthotropic steel deck. Advances in structural engineering 11(2) (2008), pp.189-198

DOI: 10.1260/136943308784466224

[3] SPS Overlay for Bridge Decks [P]. England. Suggested model fabrication and test programme.3184851.(2008)

[4] D.J.L. Kennedy, R.A. Dorton, S.D.B. Alexander. The sandwich plate system for bridge decks [J]. Presented to the 2002 International Bridge Conference 2002; 1-11

[5] Yun-sheng LI, Chun-lei CUI, Yuan-qing WANG, Peng PAN. Stress Distribution of Orthotropic Steel Bridge Decks Under Vehicle Wheel Loading[C]. Proceedings of the Nineteenth International Offshore and Polar Engineering Conference. Osaka, Japan, (2009)

[6] The Communications Ministry of China, JTGD60-2004, General Code for Design of Highway Bridge and Culverts, Beijing, The Peoples Communications Press, (2004)

[7] F. B. P. de Jong. Renovation Techniques for Fatigue Cracked Orthotropic Steel Bridge Decks [D]. Delft University of Technology, Netherlands, 2007.