Isolation System To Simplify The Model Parameter Identification And Structure Selection

The isolated structure is represented by an equivalent 2-DOF system, which is frequently adopted in engineering design and research. In some recent studies, when the equivalent system is presented, only the equivalence of fundamental period of the structures is concerned, it must be illogical for the relation of the base particle and upper structure is dissevered. The simplified model based on the equivalent of some kinetic characters or response index can represent the original system. This paper proposed three equivalent index—the shearing force of isolated structure, the isolator drift and the shearing force of the fixed base structure. The model of mended identification of parameters is established by using multi-objective optimization technique, and the optimization problem is solved by interactive complex method.The opt of structure form greatly influenced the isolated building's disposal and the isolation effectiveness, and the project cost. The design and research of isolated building burden a lot on the choice of the form opt, then the best structure form must be presented to the investor. A method using the energy equivalent equation is proposed in this paper. It can be used to analyse the isolated building of different structure form, and the contrast of it. By the design and analysis through the isolation software developed by LUT Institute of Earthquake Protection and Disaster Mitigation, a real isolated structure is taken as numerical example. The result of this example indicate that if the frame system is adopted, the flexible disposal of isolated building , the isolation effectiveness and the lower cost can be achieved.