PLASTIC ANALYSIS AND DESIGN OF REINFORCED CONCRETE PIPE
1981
This study describes a plastic analysis of a reinforced concrete curved member and more rational and economical design of circular reinforced concrete pipe. Both cracking and ultimate moment of the reinforced concrete curved member considering plasticity of concrete and reinforcing steel were analytically investigated. The interaction curves for ultimate strength design of the member subjected to a combination of axial load and bending moment were drawn. These curves were obtained by analysing concrete without reinforcement and with both reinforcement for tension and compression, respectively. In addition to the analysis, limit analysis collapse models for simply reinforced concrete pipe subjected to line loads were proposed and collapse mechanisms were discussed. The results were confirmed by load tests of full size centrifugally compacted simply reinforced concrete pipe. It was concluded that the cracking strength of the pipe depended on the tensile strength of the concrete rather than the amount and arrangement of the reinforcement and the ultimate strength was influenced by the amount and position of the reinforcing steel. (Author/TRRL)
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