To study strength and rigidity of recycled aggregate concrete filled steel tube（RACFST）frame under low cycle reversed loading

the quasi-static tests of one frame specimen of recycled aggregate concrete filled circular steel tube column versus reinforced recycled aggregate concrete beam and one frame specimen of recycled aggregate concrete filled square steel tube column versus reinforced recycled aggregate concrete beam were carried out.The failure mechanism

hysteretic curve

strength attenuation and rigidity degeneration were measured

The design methods of shear bearing capacity between the interstory and rigidity for the one-story

onebay RACFST frame were explored.Results show that the seismic design requirements of strong column and weak beam

strong shear capacity and weak bending capacity are met;The hysteretic curves are symmetrical basically;Strength attenuation and rigidity degeneration change roughly from much to a little then much under the same grade of cyclic displacement;It is suggested the method of elastic bending moment at the column end or plastic hinge at the column top or plastic hinge at the column bottom can be applied to the design calculation of shear bearing capacity between the interstory for the one-story

one-bay RACFST frame

and the method adopted in this paper may be used to estimate original-elastic interstory rigidity of RACFST frame.