Rational Design Approach for Predicting Fire Resistance of Hollowcore Slabs

Abstract

A rational approach is proposed for evaluating fire resistance of PC hollowcore slabs. The proposed approach comprises of two main steps; namely, evaluating crosssectional temperatures in the slab, and then evaluating degrading moment and shear capacity at any given duration of the fire exposure. Fire resistance is evaluated by comparing the sectional moment and shear capacity at any given fire exposure time against applied moment and shear force. A simplified approach is also proposed for predicting sectional temperatures in hollowcore slabs under fire exposure by utilizing data obtained from numerical studies performed on wide range of hollowcore slabs.