不同耗能器安装方式下的结构振动控制效果分析

在斜支撑和Ⅴ形支撑的基础上，提出了安装阻尼器的三种新型附加联动机构支撑形式；并对这三种支撑形式下的阻尼器行程和控制力的计算进行了分析，采用放大系数的形式使计算公式得以简化；以SMA耗能阻尼器为对象，利用笔者编写的计算机程序，对包括斜支撑和Ⅴ形支撑在内的五种阻尼器安装方式进行了仿真计算。结果表明：(1)不同安装方式的振动控制效果各不相同，上肢联动机构的放大作用最大；(2)SMA耗能阻尼器的控制效果受SMA丝材长度的影响较大；(3)对不同的结构和不同的阻尼器应选择不同的阻尼器安装方式，才能使整体控制效果达到最佳。

Investigation About Vibration Control Effect Under Different Manner of Fixing Damper in Structure

On the basis of the diagonal and chevron brace configurations, three new types of affixation linkage framework to fix damper were presented. The calculation method of the trip and control force of damper for three types to fix damper were investigated, and those equations were predigested by using a coefficient. With SMA damper, five fixing fashions including the diagonal and chevron brace configuration were calculated by computer program. The calculation results indicate: (1) the control effect of vibration is unlike for different type of fixing damper, the magnifying effect of upper affixation linkage framework is maximal; (2) the length of SMA thread remarkably influence the control effect of SMA damper;(3) the best control effect is attained only when the different fix fashion of the damper should be chosen for different structure and different damper.