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本文针对138m上海市嘉定县钢结构电视塔,在1:20模型结构的塔楼附近,通过安装调频质量阻尼器(TMD)和摆式质量阻尼器来研究其对结构的影响。本次试验是在线弹性范围内进行的对比性试验,且设计TMD控制装置控制模型结构的第一振型振动,设计摆式质量阻尼器控制模型结构的第二振型振动。在地震烈度为多遇7度时,对有无TMD和摆式质量阻尼器装置的模型结构,分别进行了单向和多向地面运动输入的振动台对比试验,试验结果表明:这两种控制装置均能有效地控制模型结构的反应。
In this paper, the 138m Shanghai Jiading County steel structure television tower, near the 1:20 model structure of the tower, through the installation of FM mass damper (TMD) and pendulum mass damper to study its impact on the structure. This test is a comparative experiment conducted within the online elasticity range. The TMD control device is designed to control the first mode vibration of the model structure, and the pendulum mass damper is designed to control the second mode vibration of the model structure. When the seismic intensity is 7 degrees, the shaking table comparison tests of the unidirectional and multi-directional ground motion inputs were carried out for the model structures with and without TMD and pendulum mass damper devices. The test results show that: The device can effectively control the reaction of the model structure.