BEAM END REINFORCEMENT STRUCTURE AND CONSTRUCTION METHOD

To provide a reinforcing structure capable of improving deformation performance while rationalizing bar arrangement above and below an opening, and a construction method thereof.SOLUTION: A beam end reinforcement structure with openings comprises a plurality of high-strength reinforcing bars 21 protruding from a column 20 in a direction perpendicular to the side surface of the column 20 and having a higher strength than that of beam main reinforcing bars 14 provided on the beam, a plurality of joints 15 provided above and below an opening 16, connecting each beam main reinforcing bar 14 and each high-strength reinforcing bar 21 and arranged such that one end of each joint 15 is located on the longitudinal center side of the beam with respect to the opening 16, and a plurality of restraining bars 23 arranged above and below the opening 16 so as to straddle between two or more joints to constrain movement of the plurality of joints 15.SELECTED DRAWING: Figure 6 【課題】 開孔上下の配筋を合理化しつつ、変形性能を向上させることができる補強構造およびその施工方法を提供すること。【解決手段】 開孔を有する梁端部の補強構造は、柱２０から柱２０の側面に対して垂直方向に突出し、梁に設けられる梁主筋１４より高い強度を有する複数の高強度鉄筋２１と、開孔１６の上下に設けられ、各梁主筋１４と各高強度鉄筋２１とを接続する複数の継手１５であって、各継手１５の一端の位置が開孔１６より梁の長手方向の中央側となるように配設される複数の継手１５と、開孔１６の上下のそれぞれに２以上の継手間に跨るように配筋され、複数の継手１５の移動を拘束する複数の拘束筋２３とを含む。【選択図】 図６