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Title: Numerical simulation method of thermal analysis for bridges without using field measurements
Authors: Zhou, L
Liang, C
Chen, L
Xia, Y 
Keywords: Bridges
Numerical simulation
Temperature behavior
Transient thermal analysis
Issue Date: 2017
Publisher: Elsevier
Source: Procedia engineering, 2017, v. 210, p. 240-245 How to cite?
Journal: Procedia engineering 
Abstract: Structural temperatures have significantly negative effects on the performances of bridges. In this study, a numerical method of thermal analysis for bridges without using field measurements is proposed and investigated based on a long-span suspension bridge under weather conditions of a sunny day. Firstly, basic theory and methods of bridge thermal analysis are discussed. Secondly, the long-span suspension bridge and the structural health monitoring system are briefly introduced. Then, the finite element model of a typical section of the box girder of the long-span suspension bridge is constructed for transient thermal analysis to calculate the temperature variation and distributions. The thermal boundary conditions are calculated using the meteorological information from the nearby airport rather than the field measurements for thermal analysis. At last, the thermal boundary conditions are applied on the FF model to obtain the structural temperatures using transient thermal analysis. Besides, the conventional method using the bridge field meteorological measurements is also carried out for comparison. All the simulated results of structural temperatures are compared with the field measurements. All of them have good agreements. It is demonstrated that the proposed method is reliable and effective.
Description: 6th International Workshop on Performance, Protection & Strengthening of Structures under Extreme Loading, PROTECT 2017, Guangzhou, China, 11-12 Dec 2017
EISSN: 1877-7058
DOI: 10.1016/j.proeng.2017.11.072
Appears in Collections:Conference Paper

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