Dry double floor structure, construction method of dry double floor structure, and connecting material

摘要

PROBLEM TO BE SOLVED: To provide a technology for enhancing sound insulation performance without increasing a floor height, specifically a dry double floor structure with a floor panel that has the floor panel installed stably without the adjacent floor panels contacting each other, and also provide a construction method of the dry double floor structure and a connecting material used with the dry double floor structure.SOLUTION: A dry double floor structure of the present invention includes a foundation slab, a support leg, a floor joist, a floor panel, and a connecting material. The floor joist includes at least a thin plate-form top plate, and the connecting material is installed between the adjacent floor panels. The connecting material has a housing hole for housing the support leg and a protrusion protruding toward the floor panel side. A recess is formed on an edge surface of the floor panel. A connecting space is formed by laying out the adjacent floor panels with a gap in between, and the connecting material is installed in the connecting space. Here, the protrusion of the connecting material is inserted into the recess of the floor panel.SELECTED DRAWING: Figure 1