Time-Dependent Behaviour Analysis of Long-Span Concrete Arch Bridge

2019
Yongbao Wang, Renda Zhao, Yi Jia, Ping Liao

This paper continues the previous study on clarifying the timedependent behaviour of Beipanjiang Bridge ‒ a reinforced concrete arch bridge with concrete-filled steel tubular stiffened skeleton. The obtained prediction models and the Finite Element Models were used to simulate the long-term behaviour and stress redistribution of the concrete arch bridge. Threedimensional beam elements simulated the stiffened skeleton and surrounding concrete. Then, a parameters study was carried out to analyse the timedependent behaviour of the arch bridge influenced by different concrete creep and shrinkage models. The simulation results demonstrate that concrete creep and shrinkage have a significant influence on the time-dependent behaviour of the concrete arch bridge. After the bridge completion, the Comite Euro- International du Beton mean deviation of displacements obtained by 1990 CEBFIP Model Code: Design Code model and fib Model Code for Concrete Structures 2010 model are 3.4%, 31.9% larger than the results predicted by the modified fib Model Code for Concrete Structures 2010 model. The stresses between the steel and the concrete redistribute with time because of the concrete long-term effect. The steel will yield if the fib Model Code for Concrete Structures 2010 model is used in the analysis. The stresses in a different part of the surrounding concrete are non-uniformly distributed.

Keywords
analysis, concrete arch bridge, creep, deformation, finite element, time-dependent behaviour, stress
DOI
10.7250/bjrbe.2019-14.441

Wang, Y., Zhao, R., Jia, Y., Liao, P. Time-Dependent Behaviour Analysis of Long-Span Concrete Arch Bridge. The Baltic Journal of Road and Bridge Engineering, 2019, Vol. 14, No. 2, pp.227-248. ISSN 1822-427X. e-ISSN 1822-4288. Available from: doi:10.7250/bjrbe.2019-14.441

Publication language
English (en)