设置黏滞阻尼墙的钢框架结构振动台试验研究

发布时间：2018-04-27 18:41

本文选题：钢框架 + 黏滞阻尼墙　；参考：《建筑结构学报》2017年03期

【摘要】：以3层设置黏滞阻尼墙的钢框架结构为研究对象,对其进行3条地震波在不同水准下的振动台试验。通过对设置与不设置黏滞阻尼墙的两种结构动力特性和动力响应对比,分析了黏滞阻尼墙的减震效果和耗能特征及其变化规律。研究结果表明,黏滞阻尼墙是一种同时提供附加刚度和附加阻尼的被动消能减震装置,其在提供附加阻尼和附加刚度的同时可以对结构位移起到非常显著的控制作用,并且随着输入地震波峰值加速度的增大,该附加刚度逐渐减小,而附加阻尼则逐渐增大。此外,有限元分析结果与振动台试验结果的吻合度随响应对象和激励工况的不同而变化,说明了传统Maxwell模型用于模拟黏滞阻尼墙在动态力学特性方面的局限性。
[Abstract]:The steel frame structure with 3 layers of viscous damping wall is taken as the research object, and the shaking table test of 3 seismic waves at different levels is carried out. By comparing the dynamic characteristics and dynamic responses of the two structures which are not set with the viscous damping wall, the characteristics of the damping effect and energy dissipation of the viscous damping wall are analyzed. The results show that the viscous damping wall is a passive energy dissipation device that provides both additional stiffness and additional damping. It can play a very significant control effect on the structural displacement while providing additional damping and additional stiffness. And with the increase of the peak acceleration of the input seismic wave, the additional stiffness gradually decreases and the additional damping is added. In addition, the coincidence degree between the finite element analysis and the shaking table test results varies with the response object and the excitation condition, which shows the limitation of the traditional Maxwell model to simulate the dynamic mechanical properties of the viscous damping wall.

【作者单位】：同济大学土木工程防灾国家重点实验室;
【基金】：国家自然科学基金项目(51678449,51322803) 上海市曙光计划项目(14SG19)
【分类号】：TU391

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