bridge girder stress diagram in midas civil

Tensile strength of concrete is weak, and body temperature stress without full consideration, so it will not appear tensile stress prestressed concrete box girder, causes a lot of serious cracks in some local regions and reduces structural bearing capacity and the service life. Concrete belongs to the material that has very poor thermal conductive performance under the sunshine and the influence of inner and outer casing section, there is often a big temperature difference between inside and outside of the box section, temperature stress has significant difference, leading to large temperature difference stress. For highway Bridges, suffering the long-term temperature changes in the weather, the sun’s radiation and cold current lowering temperature, each point temperature of both inside and outside surface on the box girder are changing every moment. Because the box section has strong torsional and flexural capacity, and it can work well under the condition of bending shear stress, therefore it has been widely used in large span bridge.

Nowadays, many long-span bridges have been built. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Thermal Stress Analysis of a Continuous Rigid Frame Bridge. How to cite this article: Ge S, Xu Y, Zhou X, Peng S. *Address for Correspondence: Yafei Xu, Henan Traffic Institute of Science and Technology co., Ltd, Henan Zhengzhou 450006, China Email: Submitted: 01 March 2017 Approved: 23 March 2017 Published: 24 March 2017

Shiwei Ge 1, Yafei Xu 2*, Xiao Zhou 3 and Shangyu Peng 4ġHenan Provincial Communications Planning & Design Institute Co., Ltd, Henan Zhengzhou, ChinaĢHenan traffic institute of science and technology co., Ltd, Henan Zhengzhou, ChinaģSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

Thermal Stress Analysis of a Continuous Rigid Frame Bridge

Bridge girder stress diagram in midas civil