Recent Advances in Quantitative Sensitivity Analysis for Dynamic Construction Control of Prefabricated Steel-Concrete Composite Cable-Stayed Bridges

Jiayu Cao

doi:10.63313/AERpc.9093

Authors

Jiayu Cao School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China Author

DOI:

https://doi.org/10.63313/AERpc.9093

Keywords:

Prefabricated Steel–Concrete Composite Cable-Stayed Bridge, Dynamic Construction Control, Quantitative Sensitivity, UHPC, Lap-Spliced Rebars, Bond Behavior

Abstract

Prefabricated steel–concrete composite cable-stayed bridges are a major form of industrialized bridge construction. Dynamic construction control and parameter sensitivity quantification are critical to ensuring structural safety and final alignment. Ultra-high-performance concrete (UHPC) has become a preferred material for precast segment connections due to its superior bond performance with reinforcing bars. This paper reviews recent advances in quantitative sensitivity analysis for dynamic construction control, focusing on the bond behavior of lap-spliced rebars in UHPC, key influencing parameters, and time-varying sensitivity characteristics. Research shows that steel fiber content, rebar diameter, lap length, cover thickness, and transverse reinforcement dominate bond strength and system sensitivity. The bond stress distribution along lap length varies significantly under different configurations, directly affecting structural stability during construction. Finally, existing challenges and future research needs are briefly discussed.

References

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