Numerical simulation of temperature-induced structural strain for a long-span suspension bridge

Lan Chen; Junjie Yao; Jingliang Deng; Linren Zhou

doi:10.1117/12.2512657

1 April 2019 Numerical simulation of temperature-induced structural strain for a long-span suspension bridge

Lan Chen, Junjie Yao, Jingliang Deng, Linren Zhou

Proceedings Volume 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII; 109711X (2019) https://doi.org/10.1117/12.2512657
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

Temperature effect is one of the most significant and negative effects on bridges, even worse for long-span bridges. In this study, numerical method for temperature-induced structural strains analysis based on a long-span suspension bridge is investigated. The finite element (FE) models for transient thermal analysis and structural analysis of the long-span suspension bridge are developed, respectively. The variations and distributions of structural temperatures are calculated by applying the thermal boundary conditions on the thermal FE models. Then, structural temperatures are loaded on the structural FE models for structural analysis to obtain the structural strains. The temperature-induced strains of box girder, main cables and towers of the suspension bridge are calculated and analyzed. The results indicated that the temperature effects on the main components of suspension bridge are significant. The structural temperature variations exactly explicate the changes of environmental conditions. The strains of temperature effects not only caused by temperatures of itself, but also the impact of other components. This numerical method can conveniently and effectively calculate the structural temperatures and temperature-induced strains of suspension bridge.

Citation Download Citation

Lan Chen, Junjie Yao, Jingliang Deng, and Linren Zhou "Numerical simulation of temperature-induced structural strain for a long-span suspension bridge", Proc. SPIE 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII, 109711X (1 April 2019); https://doi.org/10.1117/12.2512657

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KEYWORDS

Bridges

Solar radiation models

3D modeling

Numerical simulations

Structural analysis

Temperature metrology

Thermal modeling

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