地震作用下PTMD对高层钢结构的减振效果

发布时间：2018-05-19 09:08

本文选题：地震 + 钢结构　；参考：《哈尔滨工程大学学报》2017年03期

【摘要】：针对传统调谐质量阻尼器(TMD)的不足,本文研究了粘弹性碰撞调谐质量阻尼器(viscoelastic pounding tuned mass damper,PTMD)对高层钢结构的减振问题,采用数值仿真对PTMD进行了参数研究和优化。碰撞材料和预留间隙对PTMD的减振效果至关重要,若碰撞材料等效弹性模量较低,减振率将随着间隙的增大而减小,最后趋于恒定;碰撞材料等效弹性模量较高,减振率随预留间隙的增大,先上升后下降,最后稳定在一个定值。PTMD在不同地震强度和不同地震作用下,对高层钢结构均有较好的减振效果。从减振效果、空间要求和附加质量块重量三方面对比了TMD与PTMD,结果表明:PTMD可以大幅降低阻尼的功率要求、安装空间限制和质量块重量,比TMD更加经济有效。
[Abstract]:In view of the shortcomings of traditional tuned mass dampers (TMD), the problem of damping vibration of tall steel structures by viscoelastic collision tuned mass dampers (TMD) is studied in this paper. The parameters of PTMD are studied and optimized by numerical simulation. The impact material and the reserved gap are very important for the vibration reduction of PTMD. If the equivalent elastic modulus of the impact material is low, the damping ratio will decrease with the increase of the gap, and finally tend to be constant, and the equivalent elastic modulus of the impact material will be higher. With the increase of the reserved gap, the damping rate rises first, then decreases, and finally stabilizes in a fixed value. PTMD has a good vibration absorption effect on high-rise steel structures under different earthquake intensity and different earthquake action. The results show that TMD can greatly reduce the power requirement of damping, and install space limit and mass block weight, which is more economical and effective than TMD.
【作者单位】：哈尔滨工程大学航天与建筑工程学院;东北大学资源与土木工程学院;
【基金】：国家自然科学基金项目(51409056) 黑龙江省自然科学基金项目(E2015047) 中央高校基本科研业务费项目(HEUCF160202,HEUCF150202)
【分类号】：TU973.13

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