Abstract
It is primary object of this investigation to get data to establish design formulas of surrounding frame of reinforced concrete walls after cracks. Experiments on eight reinforced mortal walls of which frame have two types in area and wall panel have two types in side ratio were made under pure shear by new loading method by the author. From experiments and analysis the author proposed failure mechanism of reinforced concrete walls in which wall panel is divided into cracked zone and uncracked one and surrounding frame were assumed to restrict the expansion by characters of imperfect compression field of cracked zone. Ultimate strength of reinforced concrete walls depends on shear or flexure failure of surrounding frame by restrictive reaction or shear-compression failure of wall panel. Further the author proposed calculate formulas for the stress of surrounding frame of reinforced concrete walls after cracks. The appropreateness of the mechanism of failure and calculate formulas were confirmed by experimental results.
