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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Why Nonlinear Analysis and Design?
Author(s): M. Z. Cohn
Publication: Special Publication
Appears on pages(s): 591-594
Abstract:Along with the recent developments in the field, certain doubts were expressed on the practical value of limit design in structural concrete, with particular reference to the following aspects: 1. Limited redistribution in concrete structures due to the variable strength design of members. 2. Lack of economic advantages if additional reinforcement is required at plastic hinges to increase their ductility. 3. More critical service conditions than for structural steel. 4. Special service considerations leading to more complicated analytical work. Similar doubts marked the discussions of the CEB Committee XI at the Monaco Session of the European Concrete Committee in 1961. All these problems can, probably, be summarized as follows: Are there any reasons at all for developing nonlinear analysis and design methods for concrete structures? This writer believes the only reasonable answer to the above question is a straight "of course"! With this he assumes an analysis or design method obviously has to reflect as closely as possible the actual behaviour of the structure. The arguments to follow are but a brief justification of this answer, illustrating the reasons for a nonlinear design of structural concrete from both theoretical and practical considerations.
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