ADDITIONALLY PLACED REINFORCEMENT STRUCTURE OF EXISTING COLUMN

PROBLEM TO BE SOLVED: To provide an additionally placed reinforcement structure of an existing column, capable of improving transmission of shear stress between the existing column and an additionally placed part while drastically decreasing the number of post-construction anchors for anchorage to be used, and suitable for performing a simple earthquake strengthening method for an existing building.SOLUTION: In a reinforcement structure of an existing column in which reinforced-concrete is additionally placed on an outer surface of the existing column, a plurality of post-construction anchors 7 for anchorage are installed over concrete 5 of the existing column 1 and an additionally placed concrete 6, and flat plates 8 each having a plate surface orthogonal to the outside surface of the existing column are installed in a vertical direction over a concrete part 5a on the outer surface side than a tie hoop among the concrete of the existing column and the additionally placed concrete. 【課題】定着用後施工アンカーの使用本数を激減しながらも、既存柱と増し打ち部のせん断応力の伝達を向上させることができ、既存建物に対する簡易な耐震補強工法として好適な既存柱の増し打ち補強構造を提供する。【解決手段】既存柱の外面に鉄筋コンクリートを増し打ちした既存柱の補強構造であって、既存柱１のコンクリート５と増し打ちコンクリート６とにわたって複数本の定着用後施工アンカー7を設置し、既存柱のコンクリートのうち帯筋よりも外面側のコンクリート部分５ａと増し打ちコンクリートとにわたって既存柱の外面と直角な板面を持つ平型プレート８を鉛直方向に設置してある。【選択図】図１