Equal-Capacity Design Method of Precast RC Shear Wall with Unconnected Vertical Distributing Reinforcement

To solve the problem of grouted spliced sleeve in PC shear wall such as increasing material costs and poor quality, a new type of PC shear wall had been developed whose vertical distributing reinforcement were unconnected. The longitudinal reinforcements in boundary elements were enlarged by Equal-capacity Design Method proposed in this paper to offset the reduction of bearing capacity caused by unconnected vertical distributing reinforcement. To verify the accuracy of the design method and the rationality of the new type shear wall, 10 models had been analysed by finite element method. The results shown that models with unconnected vertical distributing reinforcement had lower bearing capacity, and the contribution of vertical distributing reinforcement to bearing capacity was inversely proportional to axial compression ratio. On this basis, if the longitudinal reinforcements were enlarged by the proposed design method, the capacity of PC models were as well as cast-in-situ ones which proved that the new type of shear wall designed by proposed method was reasonable and available.