Experimental study on seismic behavior of coupled steel plate and concrete composite wall

Three 1 -A scaled test subassemblies of coupled steel plate and concrete composite walls were designed nd constructed considering various axial load ratios of wall piers and flexure-to-shear ratios of steel coupling cams. Constant axial load and reversed cyclic lateral load were applied to the test subassemblies to examine their eismic behavior in terms of failure patterns, hysteretic loops, skeleton curves, displacement ductility and damping roperty. The results show that: high axial compression ratio will make the ductility of the whole specimen worse; be larger the flexure-to-shear, the better the energy dissipation capacity of the specimen; and the smaller the flex- re-to-shear, the more obvious the degradation of the specimen stiffness. The steel coupling beam yielded earlier ban bottom of the wall limb and sustained shear energy consumption, which effectively protected the bottom of the Wall limb.