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Research on Practicability and Feasibility for a New-Type Tuned Mass Damper System-TMD

Journal of China university of Geosciences 2001年第4期12卷 312-316页

作者： zhang yaoting lei ping’an liu zaihua lin ning department of civil engineering, huazhong university of science and technology , wuhan 430074 department of civil engineering Huazhong University of Science and Technology Wuhan 430074

Based on the principle of tuned mass damper (TMD). the method of using laminated rubber bearing (LRB) to connect TMD with structure is discussed in this paper. This is a new type of TMD system-suspended structure. To test the function of quake-reduction and the possibility of application, this paper explores the suspended top floor through shaking table test. In the model test, an electro-hydraulic shaking table was used. The main structure model was a four-story 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 of TMD, the fundamental frequencies of the main structure and block of TMD were measured separately first. Then. the frequencies of the main structure with the block and without the block were compared respectively under sine and imitative quake waves. The test shows that this new-typeTMD system is effective in combating the structural quake often reducing the acceleration of the top floor by more than 25 %. Because of the easy availability of the method, it is endowed with practical feasibility.

关键词： suspended top floor tuned mass damper laminated rubber bearing shaking table test.

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