Title:
Significance of Temperature-Induced Loadings on Concrete Cylindrical Reservoir Walls
Author(s):
Nihal D. Vitharana and M. J. N. Priestley
Publication:
Structural Journal
Volume:
96
Issue:
5
Appears on pages(s):
737-749
Keywords:
cracking (fracturing); reinforced concrete; reserviors; thermal stresses
DOI:
10.14359/727
Date:
9/1/1999
Abstract:
Strain-induced loadings on concrete structures have recently been shown to be significant. Therefore, the modern standards and design practices for the design of liquid-retaining concrete structures require the strain-induced loadings, such as temperature changes, to be incorporated in the design process. Unfortunately, the available guidelines and recommendations are very limited and also irrational in many aspects. In this paper, the conventional approaches followed in this regard are reviewed, and a simplified nonlinear analysis method is proposed for the cylindrical reservoir walls subjected to rotationally symmetric loadings. It was shown that the cracking of concrete relaxes strain-induced loadings significantly and also results in load redistributions. The proposed nonlinear analysis method can be used feasibly, on a routine basis, to evaluate the ther-mal stresses where the cracking of concrete is allowed to occur. The conventional approaches were found to be inaccurate, being either conservative or unconservative under different conditions.