Abstract
Path-dependant spatially averaged constitutive model for in-plane RC domain containing 4-way cracks is formulated. Through the composition of the active crack concept for 4-way cracks and RC constitutive model with quasi-orthogonal cracks, real behavior including crack open/close among multi-directional cracks is modeled. Experiment of RC shells including multiple cracks up to 4-way is conduct. Verification of the proposed model is examined with the cyclic shear loading test of RC shell which have uniformly stress state, and good performance for predicting stress-strain relation, generation of crack and switching of active crack is shown.
