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傳統的抗震結構體系是通過增強結構本身的性能來抗御地震作用的,消能減震結構體系是通過給結構附設消能減震裝置(如粘滯阻尼器)來耗散地震能量達到抗震的。粘滯阻尼器具有構造簡單,材料經濟,環境影響小,便于施工,減震效果明顯、其對原結構干擾破壞小等優點,是一種很好的減震裝置,粘滯阻尼器目前廣泛應用于土木、機械等領域,并且取得了良好的經濟效果。本文介紹了幾種常用的粘滯阻尼器,詳細討論了消能減震結構的設計計算方法,減震結構的分析方法,粘滯阻尼器的減震原理,分析粘滯阻尼器在SAP2000以及ETABS中的實現原理。本文選擇了汶川地震波來(8號波譜)對結構進行動力荷載計算。由于采用不同的分析軟件計算出的粘滯阻尼器對結構減震的影響不同,本文建立了兩種結構模型(鋼結構和混凝土框架結構),采用汶川地震波(8號波譜)對結構施加地震荷載,按照一定的方案,分別在每種結構中設置一定數量的粘滯阻尼器,采用ETABS和SAP2000兩種結構分析軟件來對結構進行動力分析,分析結構中設置粘滯阻尼器對結構在地震作用過程中的影響,通過比較粘滯阻尼器設置前后結構在地震作用下結構樓層的最大位移以及最大層間位移角的改變量,驗證了附設粘滯阻尼器對于提高結構的抗震性能的優越性。并且采用兩種結構分析軟件來分析相同的模型,找出了不同軟件分析結果的差異,由ETABS和SAP2000計算得到的粘滯阻尼器對結構的減震效果基本相同,前者較后者大3%到5%左右。
【英文摘要】The seismic structure of the traditional system always by
enhanced own performance to resist earthquakes.The structure of
energy dissipation system is attached to the structure by energy
dissipation devices (such as viscous dampers) to dissipate seismic
energy to seismic purposes.Viscous dampers structure has many advantages
such as simple structure, material economy, environmental impact,
ease of construction, the damping effect is obvious, and is small
disturbance to the original structure. Is a good shock absorber.
The current extensive use of viscous dampers in civil, mechanical
and other fields and achieved good economic results.This article
describes several common damper, and the energy dissipation structure
oft-he design method is discussed in detail, vibration analysis
of the structure, principle of vise-ous dampers, analysis of viscous
dampers in SAP2000 and ETABS the realization principle. This paper
chooses NO.8 spectrum wenchuan earthquake wave calculation of dynamic
loads on the structure.As a result of different analysis software
to calculate the viscous dampers on the structu-al damping of the
impact of different models,two structures are established (steel
and concre-te frame structure), and make used of NO.8 spectrum Wenchuan
earthquake seismic loads i-mposed on the structure, according to
certain programs were set in each structure, a certain number of
viscous dampers, used ETABS and SAP2000 structural analysis software
to analy-sis the two struct ures, analysis of the structure of viscous
dampers on the seismic structure of the process, by comparing the
structure use viscous damper settings before and after under earthquake
storey for the maximum displacement and maximum drift angle changes
in the a-mount of viscous damper attached to verify the structure
for improving the seismic preform-ance advantages. Use two kinds
of structural analysis software to analyze the same model, a-nd
find out the difference results of damper damping effect on the
structure which calculate-d from ETABS and SAP2000software is basically
the same, the former is larger than 3% to 5%.
【關鍵詞】粘滯阻尼器 消能減震 時程分析 動力荷載
【英文關鍵詞】viscous damper energy dissipation-seismic reduction time-history
analysis dynamic load
【目錄】粘滯阻尼器在結構抗震中的應用與研究摘要
6-7
Abstract
7
第一章 緒論
9-14
1.1 引言
9
1.2 粘滯阻尼器的應用
9-10
1.3 粘滯阻尼器的作用原理
10
1.4 結構減震的發展現狀
10-12
1.4.1 阻尼器的研制
10-11
1.4.2 減震結構的試驗研究
11
1.4.3 減震結構的建造
11-12
1.5 消能減震結構面臨的問題及發展趨勢
12
1.6 本文的主要目的及內容
12-14
第二章 粘滯阻尼器的種類以及減震原理
14-20
2.1 粘滯阻尼器的種類
14-16
2.2 加入粘滯流體阻尼器結構的分析方法
16-17
2.3 粘滯阻尼減震的基本原理
17-20
第三章 粘滯阻尼器在鋼結構中的分析
20-35
3.1 地震波的選取和調整
20-23
3.2 采用ETABS建立鋼結構模型分析
23-29
3.3 采用SAP2000建立鋼結構模型分析
29-35
第四章 粘滯阻尼器在混凝土框架結構中的分析
35-49
4.1 采用ETABS建立模型進行分析
35-41
4.2 采用SAP2000模型進行分析
41-49
結論
49-51
致謝
51-52
參考文獻
52-55
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