Abstract
The outer lanes and emergency lanes of the bridge deck of long-span bridges in which orthotropic steel deck is adopted were replaced with Ultra-High-Performance-Concrete (UHPC) composite deck to create a hybrid bridge deck system. A transverse connection detail was proposed to connect the two different bridge deck forms. Static bending tests and theoretical analysis were conducted on the transverse connection detail to obtain failure modes, ultimate load-carrying capacity, crack resistance, and the collaborative bending performance under positive and negative moments. A calculation method for the ultimate load-carrying capacity considering residual stresses in the UHPC after cracking was provided. The results show that the transverse connection detail has good plastic deformation capacity and collaboratively supports both sides of the bridge deck. The error in predicting the ultimate load-carrying capacity of specimens under positive bending moments using the proposed theoretical calculation method is 3.9%, and for specimens under negative bending moments, the load-carrying capacity is controlled by local buckling of the steel, with a 3.1% difference between theoretical and measured values.
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The funding was provided by Shanghai Post-doctoral Excellence Program (Grand number 2020362).
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Dai, C., Su, Q., Shao, C. et al. Experimental and Numerical Analysis on Bending Behavior of Hybrid Bridge Deck System Composed of Transversely Connected OSD and Composite Deck. Int J Steel Struct 24, 393–404 (2024). https://doi.org/10.1007/s13296-024-00823-w
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DOI: https://doi.org/10.1007/s13296-024-00823-w