Design Method and Analysis of Precast Reinforced Concrete Shear Wall with Replaceable Self-Centering Energy-Dissipation Components

Abstract:

To fulfill modular design and post-earthquake function recovery for reinforced concrete shear walls， a novel precast reinforced concrete shear wall with replaceable self-centering energy-dissipation components （RSECs） is proposed in this paper. This novel type of shear wall （named NPRW shear wall） mainly composes of RSECs， bottom blocks， and prefabricated wall panels， where each part is connected by high-strength bolts. When the structural wall is subjected to earthquakes， the RSECs dissipate most of the seismic energy and reduce residual deformation for convenient replacement after earthquakes. The design method of the NPRW shear wall is introduced， in which the design process is based on the conventional shear wall design. A finite element model of the NPRW shear wall is established to simulate the seismic performance of novel shear walls and the accuracy of the numerical model is verified by comparing with the experimental results. For three conventional shear walls design examples， the corresponding NPRW shear walls are designed based on the proposed design process， followed by numerical simulation and comparative analysis between the novel and conventional shear walls. The results indicate that the novel NPRW shear wall designed using the proposed method has similar bearing capacity and lateral stiffness， and exhibits good energy-dissipation capacity， and self-centering capability， which meet the design goal.