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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: Reliability Models for Shear in Reinforced Concrete Beams
Author(s): A.S. Nowak and P. Paczkowski
Publication: Special Publication
Appears on pages(s): 627-646
Keywords: beam; calibration; reliability; shear capacity; shear reinforcement.
Abstract:Recent calibration of ACI 318-08 for concrete structures was focused on the
flexural capacity. The objective of this paper is to develop the statistical parameters for shear capacity of reinforced concrete beams. The capacity of shear reinforcement is a function of steel cross section area, yield strength, and spacing of stirrups. In this paper, the capacity of concrete is considered using ACI formulas and other shear capacity models available in literature. The analysis is performed for various reinforcement ratios, longitudinal and transverse, including beams without web reinforcement. The statistical parameters of resistance are determined from the test results. The reliability analysis is performed, and it serves as a basis for the selection of resistance factors. The selection criterion is closeness to the target reliability index. Recommended values of resistance factors are provided for each of the
considered shear capacity methods.
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