悬吊煤斗质量调谐阻尼器对火电厂结构的减震性能研究

彭凌云; 袁勇强; 唐贞云; 康迎杰; 尹祎文; 方国威

doi:10.13204/j.gyjz202004006

悬吊煤斗质量调谐阻尼器对火电厂结构的减震性能研究

doi: 10.13204/j.gyjz202004006

北京工业大学工程抗震与结构诊治北京市重点实验室, 北京 100124

基金项目:

国家自然科学基金项目（51478023）。

详细信息

作者简介:
彭凌云,男,1976年出生,博士,副教授。电子信箱:ply@bjut.edu.cn

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出版历程
- 收稿日期: 2019-10-14

RESEARCH ON DAMPING PERFORMANCE OF SUSPENDED COAL BUCKET TMD FOR THERMAL POWER PLANT STRUCTURE

Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China

摘要

摘要: 为验证悬吊煤斗质量调谐阻尼器（TMD）对火电厂结构的减震效果，建立结构有限元模型进行单向和双向地震作用下减震效果对比分析，制作缩尺比例为1∶12的结构试验模型，进行三组不同地震波在三水准地震强度下的双向振动台试验，进行煤斗与楼层固接的常规方案和采用弹性及阻尼元件与楼层连接的悬吊煤斗TMD方案的对比试验，另外，对多遇地震作用下设置悬吊煤斗TMD有无阻尼的减震效果也进行对比试验。结果表明：悬吊煤斗TMD沿结构水平纵向（X向）和横向（Y向）的耦合作用较小，可基于TMD理论对结构的水平纵向和横向分别进行参数优化，优化后的悬吊煤斗TMD对不同水准作用下结构位移控制效果显著，对多遇地震水准下加速度也有良好控制效果，且有阻尼悬吊煤斗TMD结构的位移和加速度减震效果皆优于无阻尼悬吊煤斗TMD结构。
- 悬吊煤斗TMD /
- 火电厂结构 /
- 参数优化 /
- 振动台试验 /
- 减震效果
Abstract: In order to verify the damping effect of the suspended coal bucket TMD on the structure of the thermal power plant, a structural finite element model was established to compare the damping effects of the one-way and two-way seismic action, and a structural test model with a scale ratio of 1:12 was fabricated. Two-way shaking table test of different seismic waves under three-level earthquake intensity was conducted, and a comparison test of a conventional scheme of fixing the coal bucket and the floor, and a scheme of the hanging coal bucket TMD scheme using elastic and damping elements connected to the floor was performed, in which multiple earthquakes occur. In addition, the comparison test of the damping effect of the suspension coal bucket TMD with or without damping was carried out. The results showed that the coupling effect of the X and Y directions of the hanging coal bucket TMD was small, and it could be independent of the X and Y directions of the structure based on the TMD theory. The parameter optimization was carried out, and the optimized suspension coal bucket TMD had a remarkable effect on the structural displacement control under different levels of action, and had good control effect on the acceleration under multiple earthquake levels, and the displacement and acceleration of the damped suspension coal bucket TMD structure were reduced. The seismic effect was better than that of the undamped suspension coal bucket TMD structure.
- suspended coal bucket TMD /
- thermal power plant /
- parameter optimization /
- shaking table tests /
- damping effect

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参考文献(14)

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