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研究生:劉華璽
研究生(外文):LIU HUA-SHI
論文名稱:樓版隔震之振動台試驗與分析
論文名稱(外文):Shaking Table Tests of A Structure with Isolated Floor
指導教授:黃震興黃震興引用關係
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:營建工程系
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:121
中文關鍵詞:隔震樓版隔震系統微振樓版隔震黏滯型阻尼器高阻尼橡膠支承墊支承墊橡膠
外文關鍵詞:micro-vibrationisolated floor
相關次數:
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本研究係針對一裝於三層樓鋼構架上使用高阻尼橡膠支承墊與黏滯型阻尼器之隔震樓版進行振動台試驗,其輸入地震的方式為單側向輸入以研究隔震樓版在單軸向地震下之反應,此外,並量測微振訊號於鋼構架與隔震樓版之間的變化以探討隔震系統對微振量之影響。為了達到此一目的,依照國內設計規範設計一三層樓鋼構架,並於二樓處建構一隔震樓版。
本研究之試驗皆於國家地震中心進行,試驗主要共分為兩部份,第一部份之試驗為隔震樓版之單軸向振動台試驗,在進行振動台試驗之前,並利用SAP2000N軟體進行地震模擬以求掌握實際試驗之情況,從研究中發現,隔震樓版可以有效降低地震造成之樓版加速度。
於第二部份之試驗中,量測鋼構架與隔震樓版上之微振訊號,並推導微振分析所用之理論,以研究隔震系統對微振量之影響,從研究結果中發現,隔震系統加裝黏滯型阻尼器對於低頻微振量之放大有抑制之現象,而隔震系統對於高頻微振量之隔離亦有效果。
This study is focused on the seismic response of an isolated floor of a three story steel model structure. The isolation system is composed of four high damping rubber bearings and two viscous fluid dampers. One other important objective is to investigate the effect of the isolation system on the micro-vibration of the isolated floor.
Based on this study, it is concluded that the floor isolation can reduce the maximum floor acceleration such that the important facilities located on the floor can be better protected. However, the micro-vibration at the low frequency part will be amplified while the micro-vibration at the high frequency part can be possibly reduced. Nevertheless, the increase of damping ratio of the isolation system may result into a better control for the micro-vibration amplification at the low frequency range.
表索引Ⅲ
圖索引Ⅳ
第一章 緒論1
1.1 研究背景及目的1
1.2 研究重點及內容4
第二章 試驗結構設計與試驗佈置5
2.1 前言5
2.2 試驗結構5
2.3 試驗用支承墊9
2.4 阻尼器之性能測試11
2.5 局部隔震結構系統之設計與配置12
2.6 SAP2000N之分析模式及其模擬13
2.7 微振儀器之配置15
2.8 地震模擬振動台16
2.9 試驗裝置及佈置16
2.9.1 試驗裝置16
2.9.2 試驗裝置之佈置17
第三章 試驗程序19
3.1 試驗程序19
3.2 輸入之地震資料20
第四章 振動台試驗結果22
4.1 第一部份地震模擬試驗結果22
4.1.1 白訊振動試驗結果22
4.1.2 單側向輸入之地震模擬試驗結果22
4.2 第二部份地震模擬試驗結果23
4.2.1 白訊振動試驗結果23
4.2.2 單側向輸入之地震模擬試驗結果24
4.3 局部隔震系統試驗之結果分析24
第五章 微振訊號量測與處理26
5.1 前言26
5.2 採用RMS Velocity 之說明26
5.3 One-third-Octave band反應譜之推導28
5.4 微振分析原理說明31
5.5 程式推導36
5.6 訊號量測與處理37
5.7 量測結果之分析與討論38
5.7.1 量測結果之觀察敘述38
5.7.2 量測結果之分析整理39
第六章 結論41
6.1 局部隔震系統振動台試驗方面41
6.2 局部隔震系統微振量測與分析方面41
參考文獻43
附表49
附圖59
表索引
Table 2.1 Rolled Sections Used for Test Structure49
Table 2.2 Specifications for Shaking Table of NCREE50
Table 2.3 Specifications of Ambient Vibration Measurement51
Table 2.4 Test Structure Instrumentation List53
Table 3.1 Test Program54
Table 4.1 Comparison of Measured and Predicted 2nd Floor
Maximum Acceleration & Isolation System Displ-
acement PhaseⅠTests55
Table 4.2 Comparison of Measured and Predicted 2nd Floor
Maximum Acceleration & Isolation System Displ-
acement PhaseⅡTests56
Table 5.1 Generic Vibration Criterion (VC) for Vibration
Sensitive Equipment and ISO Guidelines57
Table 5.2 Frequencies in One-third-Octave Band58
Table 5.3 Different recording time58
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