新型建筑调谐质量阻尼器的实验研究

本文基于Tuned Mass DamPer(简称 TMD)的原理,通过振动台模型试验,进行了悬浮顶层减震结构系统的研究。这种结构由主结构与悬浮顶层组成,采用叠层橡胶支座作为二者之间的连接装置,它与顶层楼体共同形成一个大型的TMD系统。试验表明：这种新型的减震结构系统在不同地震波的作用下,主结构顶层的加速度响应减少了1/4以上。由于这种结构系统施工工艺相对简捷,因此具有良好的经济性与实用价值,值得在工程上应用与推广。

EXPERIMENTAL STUDIES OF A NEW STRUCTURAL TUNED MASS DAMPER SYSTEM

Based on the principle of Tuned Mass Damper (TMD), this paper discusses themethod of using Laminated Rubber Bearing(LRB) to connect TMD with structUre. This is a newtype TMD system with suspended Top Floor to test its function of quake-reduction and itspossibility of application, this paper explores the suspended Top Floor through shaking table test.In the model test, an electrohydraulic shaking table was used. The main structure model wasa four-floor steel frame structure. The block to combat the structural quake was a concrete block.LRB was used to connect the block to the main structure. In order to analyze the efficiency ofTMD, the fundamental frequencies of the main structure and the block of TMD were measuredseparately. The frequencies of the structure with the block and without the block were comparedrespectively under sine and imitative quake waves.The test shows that this new type TMD system is effective in combating the structural quake,reducing the acceleration of the top floor by more than 25%. Because of the easy availability ofthe method, it is endowed with economy and practical feasibility.