SPACER FOR SECURING COVERING THICKNESS OF SHEAR REINFORCING BAR, AND SHEAR REINFORCEMENT METHOD FOR EXISTING CONCRETE STRUCTURE

To provide a spacer which is suitable for securing a covering thickness of a shear reinforcing bar used in a shear reinforcement method.SOLUTION: A spacer has a first surface, a second surface positioned opposite to the first surface in a depth direction of a drilled hole part where the spacer is embedded, a side face for connecting the first surface and the second surface in the depth direction of the drilled hole part, and a grove part formed in substantially a depth direction on the side face positioned in a first region with a largest outer diameter at least when viewed in a depth direction in the side face. The side face of the spacer positioned at least in the first region extends to a direction substantially parallel to the depth direction of the drilled hole part.SELECTED DRAWING: Figure 2 【課題】せん断補強工法に用いられるせん断補強鉄筋のかぶり厚の確保の用途に適したスペーサを提供する。【解決手段】このスペーサは、第一面と、スペーサが埋設される削孔部の深さ方向に関して第一面と反対側に位置する第二面と、第一面と第二面とを削孔部の深さ方向に連絡する側面と、側面のうち、少なくとも深さ方向に見て最も外径の大きい第一領域に位置する側面上に実質的に深さ方向に沿って形成された溝部とを備える。少なくとも第一領域に位置するスペーサの側面は、削孔部の深さ方向と実質的に平行な方向に延在している。【選択図】図２