THERMAL-ANALYSIS OF REINFORCED-CONCRETE SHELLS

A finite-element formulation that can be used for the analysis of rein forced-concrete shells subjected to thermal and mechanical loads is pr esented. It incorporates the nonlinear material model for concrete, wh ich takes into account cracking of concrete, tension stiffening, softe ning of concrete in compression, and yielding of reinforcement. The fi nite elements used are the degenerate, isoparametric shell elements. T he resulting finite-element procedure was checked by comparison of the theoretical and experimental results. A parametric study was undertak en, in which several special considerations associated with the therma l analysis of reinforced concrete were addressed and discussed.