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Volume :15 Issue : 2 1988      Add To Cart                                                                    Download

Prediction of flexural cracking in eccentrically loaded reinforced concrete members

Auther : MAHFUZ S. EL-RAYYES AND GALAL A. MAAMOUN

Department of Civil Engineering, University of Kuwait. P.O. Box 5969. 13060 Safat, 13060, Kuwait

 

ABSTRACT

 

This paper presents a method for evaluating, on accurate and reliable bases, the cracking moment capacity of reinforced concrete members subjected to eccentric loading. The method takes into consideration the actual contribution of the concrete in the tension and compression zones of the cross section as well as the contribution of the steel reinforcements in resisting the initiation of the first flexural cracks. The proposed approach is general and applies equally to all common shapes of cross sections, all types of flexural reinforcement, and all modes of eccentric loading that could initiate flexural cracking. The derivation of the relevant equations are shown and described in detail. A digital computer program, intended to permit the designer to solve the problem at a small fraction of the time needed when resorting to laborious longhand calculations. has also been developed. Appendix A presents the flowchart and the program BASIC listing. Appendix B provides recommended values of the analysis-involved mechanical properties pertaining to the concrete and the steel reinforcement. In addition, a pattern example is worked out in Appendix C, and a summary of the notation used is given in Appendix D.

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