Temperature variation of concrete box girder bridge

2009年第3卷第4期

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《结构与土木工程前沿（英文）》 >> 2009年第3卷第4期 doi: 10.1007/s11709-009-0053-y

Temperature variation of concrete box girder bridge

1.Wuhan Municipal Engineering Design Institute, Wuhan 430015, China; 2.College of Civil Engineering, Hunan University, Changsha 410082, China;

发布日期： 2009-12-05

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摘要

On the basis of theoretical analysis and measurement on site, the temperature gradients and its variation on concrete box girder bridges resulting from ambient temperature, solar radiation, and structural temperature fields were discussed. With the help of the heat transfer theory and finite element method (FEM), the heat flux of the surface of concrete box girder was carried out, and all the heat fluxes were described as the convection. The results were compared with that from field measurements, and a good correlation was found. It was revealed that the methods, the parameters, the boundary condition used in this paper were reasonable. Last, some conclusions were obtained, which could provide the basis for box girder design under solar radiation.

关键词

temperature ; transfer ; correlation ; radiation ; variation