放大型黏滞阻尼伸臂减震性能分析

薛皓; 刘锦洋; 罗峥; 薛建阳; 葛鸿鹏

doi:10.13204/j.gyjzG21111515

放大型黏滞阻尼伸臂减震性能分析

doi: 10.13204/j.gyjzG21111515

1. 西安建筑科技大学土木工程学院, 西安 710055;
2. 中国建筑西北设计研究院有限公司, 西安 710018

基金项目:

榆林市产学研科技计划项目(CXY-2020-062)。

陕西省重点研发计划项目(2020SF-392)

陕西省科技创新团队项目(2019TD-029)

详细信息

作者简介:
薛皓,男,1989年出生,硕士,工程师。

通讯作者:
葛鸿鹏,384644571@qq.com。

计量
- 文章访问数: 43
- HTML全文浏览量: 8
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2021-11-15

Parameter Analysis on Damping Effect of a Novel Viscously-Damped Outrigger

1. College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. China Northwest Architecture Design and Research Institute Co., Ltd., Xi'an 710018, China

摘要

摘要: 以某超高层建筑为工程背景,对原有的黏滞阻尼伸臂方案进行改进,在伸臂桁架端部加入T型杠杆机构以增加地震中阻尼器的变形,构成了放大型黏滞阻尼伸臂方案。对分别采用这两种减震方案的超高层结构的减震效果进行了对比分析,并对影响减震效果的主要设计参数(阻尼器参数和杠杆率)进行了研究。结果表明:放大型黏滞阻尼伸臂方案能有效放大原方案中阻尼器两端的相对速度和变形,放大倍数近似等于T型杠杆机构的杠杆率;随着杠杆率的增大,放大型黏滞阻尼伸臂方案中阻尼系数的最优值逐渐减小,放大型黏滞阻尼伸臂方案中最优阻尼系数与杠杆率的乘积近似等于原黏滞阻尼伸臂的最优阻尼系数。
- 超高层建筑 /
- 框架-核心筒 /
- 黏滞阻尼器 /
- 黏滞阻尼伸臂 /
- 杠杆率
Abstract: Taking a practical super high-rise building as a case study, the improved viscous damping outrigger scheme which contains a lever mechanism installed at the end of the truss was proposed to amplify the deformation of the dampers in conventional viscous damping outrigger in earthquakes. The comparative analysis of damping effect of the two different damping schemes was carried out, and the main parameters (damper parameters and leverage ratio) affecting the energy dissipation efficiency of the newly-proposed viscous damping outrigger scheme were studied. The results indicated that the newly-proposed viscous damping outrigger scheme could amplify the deformation and velocity of dampers effectively, and the amplification factor was approximately equal to the leverage ratio of the T-shaped rigid arm; as the lever ratio increased, the optimal damping coefficient of the newly-proposed viscously damped outrigger decreased gradually. The product of the optimal damping coefficient and the leverage ratio in the newly-proposed viscous damping outrigger was approximately equal to the optimal damping coefficient of the conventional viscously damped outrigger.
- super high-rise building /
- frame-core tube /
- viscous damper /
- viscous damping outrigger /
- leverage ratio

HTML全文

参考文献(10)

[1]	马良喆,陈永祁.油阻尼器与黏滞阻尼器的性能差异探讨[J].工业建筑,2013,43(增刊1):203-210.
[2]	SMITH R,WILLFORD M.The damped outrigger concept fortall buildings[J].The Structural Design of Tall and Special Buildings,2007,16(4):501-517.
[3]	丁洁民, 吴宏磊. 黏滞阻尼技术工程设计与应用[M]. 北京:中国建筑工业出版社, 2017.
[4]	吴宏磊, 丁洁民, 崔剑桥, 等. 超高层建筑结构加强层耗能减震技术及连接节点设计研究[J]. 建筑结构学报, 2014,35(3):8-15.
[5]	薛建阳, 张崇新, 隋龙天, 等. 黏滞阻尼伸臂对超高层框架-核心筒结构抗震性能的影响研究[J]. 建筑结构,2021,51(3):83-89.
[6]	薛建阳, 张崇新, 韦亮陆, 等. 附设黏滞阻尼器超高层结构的减震效果分析[J]. 西安建筑科技大学学报(自然科学版),2020,52(1):21-29.
[7]	陈建兴, 包联进, 汪大绥. 乌鲁木齐绿地中心黏滞阻尼器结构设计[J]. 建筑结构, 2017, 47(8):54-58.
[8]	周建龙. 超高层建筑结构设计与工程实践[M].上海:同济大学出版社,2017.
[9]	李爱群,陈敏,曾德民,等.基于减隔震技术的某既有钢筋混凝土框架医疗建筑抗震性能提升[J].工业建筑,2019,49(5):184-188.
[10]	日本隔震结构协会.被动减震结构设计·施工手册[M].蒋通,译.北京:中国建筑工业出版社, 2008:44-50.