Experimental study on seismic restoring performance of reinforced concrete shear walls

Quasi-static test of nine reinforced concrete shear walls had bee n carried out under cyclic lateral loading. The relationship between force and dis placement was obtained so that the multispring macro-finite element model for R C shear wall presented in this paper was verified. The corresponding formulation s for this model were given. Through comparing the destructed behavior and damag e grades of the walls under different axial compression ratios and shear span ra tios based on the analysis of test and hysteresis loop, it can be concluded as f ollows: with the increasing of axial compression ratio to some range, the bearin g capacity of shear wall will increase if the shear span ratio of shear walls ar e the same, but the ductility of walls will decrease, and the degradation of str ength and stiffness will be more serious. At the same time, with the increasing of shear span ratio, the destructed behavior of shear walls will be transited fr om shear wreck to flexure wreck. The bearing capacity will reduce, while the duc tility and capability of consuming energy of shear walls will be strengthened.