Influence of Reinforcement on Temperature and Stress of Hollow Pier

Abstract:

This paper put circular hollow bridge pier under cold wave as an example. Based on solid heat conduction principle, we selected its border and initialized condition according with actual circumstance. Combining solid heat conduction differential equation and generalized hooke’s law which takes temperature stress into account, we have calculated the temperature and stress of concrete piers with different reinforcement ratio by ANSYS finite element software. These results indicate that the longitudinal bars and horizontal ring stirrups in concrete circular hollow pier under cold wave will increase its outer surface temperature tensile stress. Namely the reinforcements in concrete circular hollow pier not only do not prevent its outer surface cracks under the action of cold wave, but will also promote the surface cracks to produce faster. Therein, the contribution of horizontal ring stirrups to the surface cracks is greater than the longitudinal bars.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 1319-1324
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.1319
• Online since: January 2012
• Authors: Yun Fang Wu, Yan Yan Sun
• Keywords: Bridge Pier, Cold Wave, Concrete, Reinforcement, Temperature Field, Thermal Stress

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