Analysis on the Evaluation Method of In-Plane Rigidity Performance of Floor System

Structural analysis usually divides the rigidity performance of floor system into three types: rigid, stiff and flexible.For specific engineering buildings, how to evaluate their rigid performance, there is no uniform regulation in national regulations. Based on the general analysis of the relative specifications and research contents of the rigid performance of the floor, two types of analysis and evaluation methods of the rigid performance of floor system are summarized,type I and type II method.The type I method is more convenient to use.The type II method can directly reflect the the essence of the rigid performance of the floor,but it is more complicated to use.