Shear design of high and normal re beams without web reinforcement

Abstract EN

This work examines the major parameters that influence the shear strength of reinforced concrete (RC) beams without web reinforcement These include the shear span / depth (a / d) ratio (between 2.

0 and 7.

1), concrete compressive strength f'c (between 20.

0 MP a and 101.

9 MPa), the longitudinal steel ratio (pw) (between 0.

00251 and 0M620), and beam size (bd) 271 RC beams failing in shear available in the literature are used to study the effect of the indicated major parameters on the strength of Normal Strength Concrete (NSC) and High Strength Concrete (HSC).

Proposed design equations are compared with the existing shear design relationships of the ACI Code 318M-02, BS 8110, Canadian Code, New Zealand Code and Zsutty equation to predict the shear capacity of RC beams.

For all methods considered, the ratio of shear strength of beams VrTEST to the design shear resistance VrD£s is calculated the prdp'dsed~design 'equations lead to safe design with a low coefficient of variation (COV).

This COV is only 18.

6 percent which is significantly less than values obtained for other methods (ranging between 28.

5 to 43.

3percent).