摘要
随着建筑物高度的增加,框架-核心筒-伸臂结构体系的应用越来越多。同时,多道伸臂桁架的布置在超高层结构中越来越普遍,较柔的超高层结构的自振频率接近脉动风的频率,风振下结构的加速度较大,易引起舒适度问题。针对某带多道伸臂桁架的超高层建筑,提出在伸臂桁架与外框架间布置黏滞阻尼器的方法,即采用带黏滞阻尼器的消能减震伸臂桁架,来控制结构在风振下过大的加速度响应,重点分析其抗风性能及在不同高度的伸臂桁架中布置黏滞阻尼器的减振效率。
With the increasing height of buildings, the frame-central core tube-outrigger structure system is widely used in super-tall buildings. At the same time, it becomes more and more popular to employ multi- outriggers in taller and super high-rise buildings. However, because of the fact that the vibration period of these skyscrapers is close to that of the fluctuating wind, the acceleration of structure caused by wind generally exceeds the level of comfort regulated by the corresponding codes. Targeting on a super high-rise building with multi-outriggers,viscous dampers are installed between an outrigger at some height and the mega column, namely to adopt energy dissipation outrigger with viscous dampers, thus the overlarge wind-induced accelerations will be under control. Besides, the article will also focus on the effectiveness of the wind vibration control by viscous dampers installed in an outrigger at different levels.
出处
《结构工程师》
北大核心
2017年第2期34-40,共7页
Structural Engineers
基金
国家自然科学基金(51478361)
中央高校基本科研业务费专项资金项目
关键词
消能减震
超高层
伸臂桁架
黏滞阻尼器
抗风
舒适度
energy dissipation, super high-rise building, outrigger, viscous damper, wind resistance, comfort level
