STUDY OF FORCE TRANSFER BEHAVIOR FOR SRC MEMBERS WITH STUD SHEAR CONNECTORS UNDER CYCLIC REVERSED LOADING AFTER EXPOSURE TO HIGH TEMPERATURES

Six steel reinforced concrete ( SRC) short columns with stud connectors after high temperatures under cyclic reversed loading and six comparative specimens under monotony loading were tested to study their failure pattern，load-slip characteristics and shear force transmission capacity． Test results showed that the typical failure mode of SRC specimens with stud connectors under cyclic reversed loading was concrete split failure，which was basically the same to those under monotony loading． Bond stiffness and shear transmission capacity of specimens decreased with the increase of the maximum temperature or the duration of the maximum temperature． Specimens with stud connectors on the flanges had better bond stiffness and shear transmission capacity than those with stud connectors on the webs． Compared with specimens under monotony loading，the specimens under cyclic reversed loading had lower shear force transmission capacity．