Numerical simulation of the temperature effects on natural frequencies of a long-span suspension bridge

Lan Chen; Yumeng Chen; Linren Zhou

doi:10.1117/12.2616558

19 April 2022 Numerical simulation of the temperature effects on natural frequencies of a long-span suspension bridge

Lan Chen, Yumeng Chen, Linren Zhou

Proceedings Volume 12048, Health Monitoring of Structural and Biological Systems XVI; 120481E (2022) https://doi.org/10.1117/12.2616558
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Temperature has significant effects on the mechanical properties of bridge. This paper investigated the temperature effects on dynamic properties of a long-span suspension bridge with steel box girder. The correlation between the air temperature and the natural frequencies of the bridge is analyzed based on field measurements. The finite element (FE) models for thermal analysis and structural analysis are developed separately using ANSYS software. The structural temperatures of the bridge’s components are calculated. The calculated temperatures are applied to the structural FE model, and then the bridge’s natural frequencies are obtained using model analysis. The calculated structural temperatures and natural frequencies are compared with the field measurements to verify the reliability and accuracy of the numerical analysis method. The calculated temperatures have good agreement with the measurements. The value and variation of the low order natural frequencies of the suspension bridge can be properly simulated with acceptable reliability and accuracy.

Conference Presentation

Citation Download Citation

Lan Chen, Yumeng Chen, and Linren Zhou "Numerical simulation of the temperature effects on natural frequencies of a long-span suspension bridge", Proc. SPIE 12048, Health Monitoring of Structural and Biological Systems XVI, 120481E (19 April 2022); https://doi.org/10.1117/12.2616558

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