Prestressed bidirectional superposition slab

• Main Author: YOULIN,CHENG XU
• Format: Patent
• Language: English
• Published: 22.09.2004
• Edition: 7
• Subjects: BUILDING; CEILINGS; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; INSULATION OR OTHER PROTECTION OF BUILDINGS; ROOFS; WALLS, e.g. PARTITIONS

The utility model relates to a prestressed two-way combined slab. A bottom side of the prestressed two-way combined slab is prefabricated; an upside is cast on-site; a high efficiency prestressed pre-cast floor slab is used as a mould; a horizontal transferred force is realized by utilizing the mutual lap joint of the reinforcing bar stretched from a side of the floor slab to form a whole through the two times of the concreting. The utility model adopts a medium or high-strength steel wire or a three-strand stranded steel wire as a prestressed distributed steel of the pre-cast floor slab, a reinforcing bar netting as a horizontal distributed steel of the pre-cast floor slab and a negative moment distributed steel in an on-site cast layer. The utility model adopts a measure in the fabrication of the pre-cast floor slab, the connection of the floor slab and the structure of the on-site cast layer to make the prestressed two-way combined slab have a high bearing capacity, a rigidity and a good crack control performance, and the functions of the good heat preservation and the sound insulation. The floor slab of the utility model is capable of bearing a greater load under a large span (the load of 10 kN/m can be beard in a span of 9m); the thickness of the floor slab is small; thereby the span of 1/50 times can be realized; a beam can not be arranged between the floor slabs; a storey height can be reduced under meeting the conditions of a headroom. The floor of the utility model is the two-way board; a structural integrity is good, which has the double advantages of a prefabricated part and an on-site cast structure concurrently, thereby lightening a structural self-weight effectively; the high-efficient prestressed pre-cast floor slab with the different forms can be made so as to meet a requirement of an arrangement in the different plane.