Shear Capacity Models for Rc Columns With FRCC Jacketing

Abstract

Existing RC buildings may suffer of brittle failure due to the limited shear capacity of nonconforming columns. To reduce the vulnerability of such members, several retrofit techniques based on composite materials can be successfully adopted for enhancing the shear capacity of RC columns. The use of Fiber Reinforced Cement Composite (FRCC) jacketing has been recently recognized as an effective solution for improving the durability of RC members and some experimental tests have been carried out for investigating the role of FRCC jacketing on the shear capacity of RC members. However, poor indications are available regarding the modelling of strengthened members capacity and the design of the strengthening solution. In this work, an in deep analysis about the available analytical models for assessing the shear capacity of members is reported and then different methods are proposed for assessing the shear capacity of RC members with FRCC jacketing.