METHOD OF INDUCING CRACKS IN CONCRETE MEMBERS AND CRACK INDUCING STRUCTURE OF CONCRETE MEMBERS

PROBLEM TO BE SOLVED: To simplify construction and to reduce costs.SOLUTION: It comprises an arrangement step for disposing a buried section defective member so as not to be exposed on the surface only in a first region where tensile stress is generated based on the temperature difference between the first region and a second region inside the first region, in the first region on the front side of the concrete member in the frame of the concrete member, in the course of curing of the concrete cast in the formwork, and a casting step of casting concrete in the frame and embedding the buried section defective member in the concrete, in which the tensile stress induces a first crack between the buried section defective member and the surface.SELECTED DRAWING: Figure 6 【課題】施工の簡易化及びコストの低減を図る。【解決手段】コンクリート部材の型枠内のうち、コンクリート部材の表面側の第１領域であって、型枠に打設したコンクリートが硬化する過程で、第１領域よりも内側の第２領域との温度差に基づいて引張応力が発生する第１領域のみに、埋設断面欠損部材を表面に露出しないように配置する配置工程と、型枠にコンクリートを打設し、埋設断面欠損部材をコンクリートに埋設させる打設工程と、を有し、引張応力によって、埋設断面欠損部材と表面との間に第１ひび割れを誘発させる。【選択図】図６