S–N curves for fatigue of bond in reinforced concrete structures under transverse tension

In reinforced concrete construction, design verifications for the fatigue of reinforcing steel and concrete are required separately. In this manner, the fatigue behaviour of the bond between steel and concrete was not taken into consideration. Longitudinal cracking along the reinforcing bar due to t...

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Bibliographic Details
Published in:	Engineering structures 2010-10, Vol.32 (10), p.3068-3074
Main Authors:	Lindorf, Alexander, Curbach, Manfred
Format:	Article
Language:	eng
Subjects:	Applied sciences Bonding Building structure Buildings. Public works Computation methods. Tables. Charts Construction (buildings and works) Exact sciences and technology Fatigue (materials) Fatigue life Fatigue of bond Fatigue tests Longitudinal cracking Reinforced concrete Reinforced concrete structure Reinforcing steels Repeated loading S N diagrams Structural analysis. Stresses Structural steels S–N curves Transverse tension Wöhler lines
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Summary:	In reinforced concrete construction, design verifications for the fatigue of reinforcing steel and concrete are required separately. In this manner, the fatigue behaviour of the bond between steel and concrete was not taken into consideration. Longitudinal cracking along the reinforcing bar due to transverse tension reduces the loading capacity as well as the fatigue strength. By means of comparing current design codes regarding the fatigue of concrete and reinforcing steel, an appropriate approach is being looked for to represent the fatigue of the bond. The S–N curves for the bond, which resulted from pull-out tests, were set in relation to S–N curves for the fatigue of reinforcing steel. It becomes evident how the fatigue of bond resistance due to increasing transverse tension load gains in importance compared to the fatigue of reinforcing steel.
ISSN:	0141-0296 1873-7323