Design and Analysis of Reinforced Concrete Coupled Shear Wall with Replaceable Coupling Beams

Abstract:

In this study, a new kind of coupling beam is proposed, which is composed of nonreplaceable part and replaceable part. During earthquakes, the replaceable parts yield first and the nonreplaceable parts remain elastic. The design method of the new replaceable coupling beam is introduced. The numerical simulation and comparison analysis are carried out. The results show that under minor earthquakes, the replaceable parts remain elastic. Under moderate earthquakes and major earthquakes, the replaceable parts yield first and the damage of the new coupling beams concentrates on the replaceable part. Compared with the traditional reinforced concrete coupled shear wall, the seismic performance of the new coupled shear wall is improved significantly. Finally, the relationship between the deformation of the replaceable part and inter-story drift ratio is proposed, providing the basis for the design of the replaceable part.

Key words:earthquake resilient structure; reinforced concrete shear wall; replaceable coupling beam; design method; seismic performance