悬索桥主缆温度场计算

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Abstract Research purposes: To precisely calculate the temperature field of the main cable of suspension bridge under various states is crucial to erection of the suspension bridge． Therefore，on some basic assumptions，the thermal analysis model and unsteady heat conduction differential equation of the main cable are established to derive the solar heat radiation and heat convection boundary conditions． The result of the model test is used as the thermal physical parameters of the cable calculation model． In order to get the numerical solution under the specific environment conditions，the calculation method and thermal equilibrium matrix equation of the temperature field of the main cable are established．

Research conclusions: The comparison of the finite element calculation result with the actually measured result of the temperature field of the main cable of the bridge shows this calculation method is precise and reliable and it is available for calculating the temperature field of the main cable of the suspension bridge in the courses of design，construction and service．

Key words： suspension bridge main cable temperature field solar radiation non － steady state heat conduction equation

Received: 12 October 2011

PACS:

U446

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	XU Hai － ying
	ZHAO Shao － jie

Cite this article:

XU Hai － ying,ZHAO Shao － jie. Calculation of Temperature Field of Main Cable of Suspension Bridge[J]. 铁道工程学报, 2012, 29(1): 45-50.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2012/V29/I1/45

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