Analysis of fatigue crack growth in RC beams

Author

Ray, Sonalisa ; Kishen, J. M Chandra

Author_Institution

Dept. of Civil Eng., Indian Inst. of Sci., Bangalore, India

fYear

2011

fDate

26-28 July 2011

Firstpage

963

Lastpage

966

Abstract

In this work, a fatigue crack propagation model developed using dimensional analysis for plain concrete is used in conjunction with the steel closing force to predict the crack growth behavior of reinforced concrete beams. A numerical procedure is followed using the proposed model to compute the fatigue life of RC beams and the dissipated energy in the steel reinforcement due to shake down behavior. Through a sensitivity study, it is found that the structural size is the most sensitive parameter on which the crack growth rate is dependent. Furthermore, the moment carrying capacity of an RC beam is computed as function of crack size by considering the effect of bond slip.

Keywords

beams (structures); fatigue cracks; reinforced concrete; slip; steel; structural engineering; RC beams; bond slip; energy dissipation; fatigue crack growth analysis; fatigue crack propagation model; fatigue life; moment carrying capacity; reinforced concrete; steel closing force; steel reinforcement; structural size; Concrete; Fatigue; Force; Plastics; Steel; Strain; Stress; dimensional analysis; energy dissipation; fatigue; residual strength;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6003139

Filename

6003139