剪力墙结构自控连梁的试验研究

Experimental Research on Self-Control Coupling Beams in Shear Walls

A new type of coupling beam, named self-control coupling beam, is proposed based on the concept of structural control. 2 photoelestic models and 24 reinforced concrete specimens were tested under reversed cyclic loads. The behaviour of strength, load-deformation relationship, hysteretic response and ductility of the beams were observed and discussed in detail. The calculating method for the strength of the beams is given. The results show that the self-control coupling beams have high stiffness under service loads, enough ductility to sustain large plastic rotation after flexural reinforcement yielding, and satisfactory energy dissipation capacity. The seismic response of shear wall structures with the beams can be expected to be controlled. Therefore, it is suggested that self-control coupling beams can be applied to shear walls with the beams of a span/depth ratio of less than 2.0 in seismic area.