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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: Modeling Uncertainties in High-Strength Concrete Columns According to Reliability-Based Design Philosophy
Author(s): S. M. C. Diniz and D. M. Frangopol
Publication: Special Publication
Appears on pages(s): 431-450
Keywords: columns; compressive strength; confinement; high-strength concrete; loads; reinforced concrete; slenderness; variables
Abstract:ACI Code-95 recommendations for column design are based mostly on test results on concretes with strengths up to 42 MPa. Due to differences between high-strength concrete (HSC) and normal-strength concrete (NSC) material and structural behavior, using these recommendations for HSC columns does not mean that the same level of safety as for NSC is obtained. As a consequence, the reliability that the same level of safety as for NSC is obtained. As a consequence, the reliability of HSC columns must be assessed. Since most of the variables involved in column design (material properties, geometric characteristics, loads, etc.) are random, a basic step in the reliability assessment of HSC columns is the modeling of uncertainties associated with both column strength, as well as, load effects is presented. Regarding the computation of the statistics of the HSC column strength, many issues have to be resolved: (a) the scarcity of information on the variability of the compressive strength of HSC; (b) the unavailability of a closed form solution to express column strength; and © the compatibility with the assumed failure criterion. Regarding the computation of the load effect statistics, special attention given to the case of slender HSC columns.
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