COMPOSITE FLOOR SLAB WITH CLOSED SECTION DECK PLATE AND I-BEAM AND CONSTRUCTION METHOD THEREOF

摘要

PURPOSE: A composite floor slab with a closed section deck plate and an I-beam and a construction method thereof are provided to improve structural performance, and to use for the large structure by increasing the sectional rigidity with forming the closed section reinforcing part in the deck plate. CONSTITUTION: A composite floor slab is composed of a deck plate(20) having plural tubular closed section reinforcing parts arranged horizontally and shear connecting members in the surface for shear combination with concrete, and a concrete slab(30) poured on the deck plate and integrally combined with the deck plate. A recessed part is formed between the closed section reinforcing parts, and an I-beam having a shear connector is integrally combined with the deck plate in the recessed part. The deck plate, the I-beam and the concrete slab are integrally formed with embedding the I-beam in the concrete slab. Load is supported by holding tension to the floor slab with the deck plate, the lower flange of the I-beam and the lower web.