A SEISMIC BEHAVIOR CONTROL METHOD FOR CONCRETE COUPLED SHEAR WALLS

The seismic behavior control method for concrete coupled shear walls (CSW) has not been well solved. In this paper, analysis has been carried out based on the continuous connection method, with the known height, section size and material properties of the wall. First, the section size of the coupling beam is determined through controlling the coupling ratio within a rational range so that CSW meet the requirements of the displacement ductility. Second,the base shear is determined through controlling the roof drift and inter-story drift. Finally, relative vertical deformation at coupling beam ends, which meet the coupling beam ductility demand, is determined; and then the amount of stirrups in the coupling beam is determined by the relative vertical deformation and the requirement of the coupling beam#x02019;s shear capacity. The results show that the amount of the coupling beam#x02019;s stirrups, which is determined through the whole displacement ductility demand, target coupling ratio and the demand of relative vertical deformation, is reasonable. The amount of the coupling beam#x02019;s stirrups is controlled by the shear capacity of the beam when the coupling ratio is between 0.4~0.66.