Application Research Of A New Type Sma Damper On Wind-induced Vibration Control Of High-rise Building

In some low earthquake intensity area, wind load usually is the dominative load for the high-rise structure design. Wind load maybe influence human comfort of high-rise structure; and in some serious case it maybe destroy the structure so the lives and property will be subjected to threat. In order to satisfy the demand of resisting wind load, we must take some valid measures. Because the Simulation of fluctuating wind load on high-rise structure is not accurate enough, traditional methods resisting wind load are not economical and reasonable. wind-induced vibration control is a valid method.In this text, a new type SMA damper making use of SMA wire was designed. When the damper was in a tensile, compressed or twisty condition, the SMA wire is always in the condition of tension. The passive energy dissipation control of wind-induced vibration in this text makes use of the superelasticity of tensile SMA wire.The main contents are as follow:(1)Basing on Davenport wind model adopt harmony superposition method to simulate wind load ,and check its validity by compare with the Davenport wind model and mathematical statistics method.(2)Adopt ANSYS to analyze the influence to the mechanical property of SMA wire by change the temperature of environment,frequency of load and strain amplitude of SMA wire.(3)Design a new type of SMA damper basing on the analyse of SMA wire and analyze the influence of its work function by change the temperature of environment,frequency of load,strain amplitude of SMA wire and the length of SMA wire.(4)Make use of the wind load simulated before to do time-history analysis between project 1,2,3 and 4 by optimal control of damper's quantity basing on optimal control algorithm; In the same way, do time-history analysis between project 3 and 5 by optimal control of damper's position. And analyze the result to check the validity of the optimal control algorithm. Adopt project six to satisfy the demand of space for structure ,and make use of the wind load simulated before to do time-history analysis of the project.(5)Check the validity of the human comfort of high-rise structure be controlled compared with Technical Specification for Concrete Structure of Tall Building.