Anchorage Behavior of Steel Plate with Anchoring Rebars in Recycled-concrete-filled Square Steel Tube
This study focused on the anchorage behavior the steel plates with anchoring rebars that is embedded in recycled-concrete-filled square steel tubes.A total of seven specimens were tested under static pullout loads and the key parameters were the diameter of rebars,the number of rebars,and the thickness of the steel plates.Two failure modes,namely shear failure of rebars and bearing failure of plates,were observed for the specimens.It was found that the square steel tube could provide confinement on the concrete and the dimeter and number of rebars could significantly affect the pullout capacity.The capacity was increased by increasing the diameter and number of rebars,among which increasing the rebar number is most efficient way to enhance the anchorage strength.The ultimate capacity of the tested speci-mens was predicted by the"Code for design of steel and concrete composite bridges"and the predictions were found to be conservative.
recycled-concrete-filled square steel tubeplate with anchoring rebarsanchorage behaviorpullout testfailure modes
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