The contribution of flanges to the shear strength of reinforced
concrete beams has up to now either been neglected or evaluated by
very simple empirical formulas. However, the contribution may
sometimes be large, up to 20-30%. In this paper the flange
contribution for shear reinforced I-beams has been calculated
using a simple upper bound approach according to the theory of
plasticity. The upper bound mechanism consists of a frame action,
where the frame is supposed to be composed by the flanges and
parts of the web. The results of the calculation have been
compared with tests covering a wide range of geometrical
parameters. The comparisons show that the method suggested does
indeed lead to very accurate results.
Number of pages | 22 |
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Publication status | Published - 1999 |
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