Floor deflection control method and construction method of steel frame multi-story building.

摘要

PURPOSE:To reduce steel quantity and cost, absorb the error generated from the manufacture and construction of a steel frame, and improve the level precision of a floor by exhibiting the composed effect of a steel beam and a floor concrete when the steel frame is cambered to control the deflection of the floor caused by the weight of the steel beam or floor concrete. CONSTITUTION:In the state where a part of a steel beam 1 is pushed up by a jack 3 to impart a necessary amount of camber to the steel beam 1, a floor concrete 4 is placed on the beam steel. After the floor concrete 4 is hardened, the pushing up by the jack 3 is gradually released, and the composed effect of the steel beam 1 and the floor concrete 4 is exhibited to control the deflection of the floor.