New generation of shear design formulas for RC members

What is it about?

This paper proposes simple-hand formulas for calculating the shear capacity of reinforced concrete (RC) panels and members. We propose the formulas based on micro-mechanics based analyzes on the nonlinear shear response of RC elements. The formulas consider all the contributing mechanisms in the shear behaviour of RC elements and thus have high accuracy in predicting the response​ of structural components.

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Why is it important?

We proposed unified formulas for shear capacity of RC members with all sizes and reinforcement ratio based on the active mechanisms at the crack surfaces in RC members. The relations account for the effect of reinforcement, crack opening and spacing, and aggregate size in the shear capacity of concrete. The developed relations can also be used for shear failure assessment of RC members and produce capacity curves before and after reinforcement yielding which are extremely important for seismic performance evaluation of structural components.