Title:
Temperature Distributions and Stresses in Concrete Bridges
Author(s):
D. S. Prakash Rao
Publication:
Journal Proceedings
Volume:
83
Issue:
4
Appears on pages(s):
588-596
Keywords:
beams (supports); box beams; bridges (structures); concrete slabs;
continuous beams; finite difference theory; finite strip method; heat transfer;
solar radiation; temperature; thermal stresses.
DOI:
10.14359/10452
Date:
7/1/1986
Abstract:
Temperature distribution and the resultant stresses in a concrete bridge depend upon several factors, of which ambient conditions and support details are the most important. A series solution is adopted for linear heat flow analysis and the results are compared with those from the Finite Difference Method. The influence of dissimilar climatic data of Christchurch, New Zealand, Melbourne, Australia, and New Delhi, India on the temperature distribution is studied, and design temperature distributions for the Melbourne data are proposed. The influences of the blacktop thickness and ventilation of the air-cell in box girders are also studied. Some of the inferences drawn from these studies are at variance with the results available in the published literature. The proposed temperature distributions can be used for ambient climatic data similar to those adopted in this article.