Abstract
This paper presents an evaluating procedure of ultimate strength of reinforced concrete cylindrical shell roofs with vertically supported edge beams. Differential equations of the roof with orthtropic materials are analyzed by applying the Galerkin's method. And, it is shown that stress resultants of the roof are few affected by a variation of Young's modulus of the shell. This let us evaluate the stress resultants after occuring concrete cracking on the shell. Then, an procedure that evaluates ultimate strength of three typical failure mechanism of the reinforced concrete cylindrical shell roof is shown and is examined by comparing with experimental study.
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