ABSTRACT
The current domestic and international research shows that adding post-tensioned reinforcement in precast concrete beams can improve the ability to reset the joint, and reduce residual deformation after the earthquake [4]. Therefore, this paper designs a self-centering precast prestressed concrete frame with a joint JD-1, as shown in Figure 1. And a common framework for the precast concrete pouring joint JD-2, as shown in Figure 2. Dimensions and reinforcement of two joints are identical. In order to make the finite element model truly reflect the stress state of the joints in the actual project, the paper model is designed as a general framework for multilayer force across the bottom joint beams combination inflection points. In order to eliminate the interference of size effect, the model is the original ratio of full-scale model.
