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大悬挑屋盖结构的风振控制设计方法

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2008年06期
Page:
111-115
Column:
研究论文
publishdate:
2008-11-30

Article Info:/Info

Title:
Design method of wind vibration response control for large cantilevered roof structure
Article ID:
1000-2006(2008)06-0111-05
Author(s):
SU Yi1 CHANG Ye-jun2 CHENG Wen-rang3
1. College of Civil Engineering Nanjing Forestry University, Nanjing 210037, China;2. Yancheng Civil & Architectural Society, Yancheng 224005, China;3. College of Civil Engineering Southeast University, Nanjing 210096, China
Keywords:
Viscoelastic damper Large cantilevered steel roof structure Structure design Wind vibration control
Classification number :
TU352.1
DOI:
10.3969/j.jssn.1000-2006.2008.06.025
Document Code:
A
Abstract:
The vertical displacement response of large cantilevered roof structure, which is sensitive to wind load, is easy to exceed the code prescript. For mitigating wind-induced vibration and improving structure vibration behavior, the viscoelastic dampers are a good choice to control the response of the large cantilevered roof structure. On the procedure of vibration control design, model strain energy method is pivotal to get design parameters. When the material loss factor is high, traditional modal strain energy method may produce relative great error. A revised modal strain energy method is presented to improve the analysis accuracy. The calculation formula of vertical control force, the equivalent stiffness and the equivalent loss factor of energy dissipation brace are introduced. With the guide of design procedure, the wind- induced vibration control design for a large cantilevered steel roof structure is given. The design procedure of wind - induced vibration control for large cantilevered steel roof structure is very convenient and practical for structure engineers.

References

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Last Update: 2013-05-20