To address the lack of a solar thermal gradient in a PK section concrete girder without pavement in highway bridge regulation and the limited research on this topic both locally and abroad, an ANSYS model for the right branch cable-stayed bridge concrete girder without pavement of the Maanshan Yangtze River Expressway is built to calculate the temperature field. Results agree well with the measured values. The parameter analysis of the concrete girder without pavement shows that absorptivity significantly influences the maximum vertical temperature difference of the girder, and wind speed is another important factor. A vertical maximum gradient temperature model under the worst environment and its exponential function in the course of bridge construction are calculated. The distribution trend of the gradient temperature obtained from our research basically tallies with those from existing specifications of different countries. The values of the gradient temperature differ because of the effect of geography. Therefore, improving the specification for the gradient temperature of concrete girders without pavement in Chinese highway bridge regulations is suggested.
Analysis of the Temperature Field of a PK Section Concrete Girder without Pavement Caused by Solar Radiation
2016-09-15
72016-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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