Construction method of floor reserved hole

The invention relates to the technical field of building engineering, and discloses a construction method of a floor reserved hole. The method comprises the following steps: supporting a template, positioning an installation position of a reserved casing, fixing the reserved casing, pouring concrete, and disassembling the reserved casing pipe. According to the construction method of the floor reserved hole provided by the invention, an axial binding force is provided for the reserved casing pipe by virtue of a fastening apparatus, a radial binding force is provided for the reserved casing pipeby virtue of a clamping groove on a pressure plate, so that the reserved casing pipe is firmly fixed on a bottom die, and the forming quality of the reserved hole is higher. 本发明涉及建筑工程技术领域，公开种楼板预留孔的施工方法。该方法包括以下步骤：支设模板、定位预留套管的安装位置、固定预留套管、浇筑混凝土、拆卸预留套管。本发明提供的楼板预留孔的施工方法，通过紧固装置给预留套管提供轴向约束力，通过压板上的卡接槽给预留套管提供径向约束力，从而使得预留套管牢固的固定在底模上，使得预留孔的成型质量更高。