An Optimal Vibration Control and Damping Devices Design for Three Dimensional Building Structures

摘要

A new method on vibration control and optimal design for three-dimensional building structures isrnpresented in this paper. Firstly, the mathematical model of a typical three-dimensional shear-typernstructure is established which considering the damping devices installed in the structure. Then, thernoptimal design of damping devices is investigated in two cases, i.e. limit damping coefficient and nornlimit damping coefficient. The optimal parameters of the damping devices can be obtained by using thernsimplex optimization method and the complex optimization method respectively in the energy index ofrnthe three-dimensional structure. The optimal number and placement of damping devices can also bernobtained according to the performance index of control devices. Numerical results show that thernoptimal design method proposed in this paper is effective and flexible. It may obviously reduce thernresponses of building structures.