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Study on Mechanical Behavior of Negative Bending Region Based Design of Composite Bridge Deck


Steel–concrete composite decks are paved by grid beams on the superstructure of Dongping Bridge. Bridge deck grid beams consist of three main longitudinal girders, secondary longitudinal girders, main beams, secondary beams, and composite decks (which consist of profiled steel sheet, shear connectors with perfobond strips, steel rebar and concrete with steel fiber). Shear connectors with perfobond strips are designed in Dongping Bridge to improve the longitudinal shear capability between profiled steel sheet and concrete. For the performance of deck system in structural negative bending region, three typical forms of load, namely, service load, fatigue load and failure load, are applied. The results show sufficient stiffness and high load-carry capacity of the deck system. The stress of shear connectors with perfobond strips under 10000 cycles and 2.99 million cycles of fatigue load appeared to be invariable, which indicates that PBL is of good anti-fatigue performance as shear connectors with perfobond strips reaches the corresponding yield strength before destroyed, with the yield load of 359.10 kN.

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The writers gratefully acknowledge financial support provided by the Science Foundation of China Postdoctor (Grant No. 2016M600352), the Science and Technology Agency of Zhejiang province (Grant No. 2015C33222), the Science Foundation of Shanghai Postdoctor (Grant No. 13R21421100).

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Correspondence to Lu Peng-zhen.

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Peng-zhen, L., Lin-feng, C., Yang, L. et al. Study on Mechanical Behavior of Negative Bending Region Based Design of Composite Bridge Deck. Int J Civ Eng 16, 489–497 (2018).

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  • Steel–concrete composite Bridge deck
  • Perfobond rib shear connector
  • Fatigue and ultimate bearing capacity
  • Test
  • Optimization design