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論文中文名稱:功能性防止橋梁落橋裝置之分析 [以論文名稱查詢館藏系統]
論文英文名稱:The Analysis of Functional Bearing Systems Bridge [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
中文姓名:冷岡樺
英文姓名:Kang-Hua Leng
研究生學號:94428022
學位類別:碩士
語文別:英文
口試日期:2007-07-19
論文頁數:90
指導教授中文名:李有豐
指導教授英文名:Yeou-Fong Li
口試委員中文名:陳清泉;張國鎮;徐增興
中文關鍵詞:塑性鉸防止落橋裝置希爾伯特-黃轉換
英文關鍵詞:Rubber bearing, RestrainerShear keyHilbert-Huang transform
論文中文摘要:從近年來震害調查中發現,在地震作用時,當橋梁上下部結構間產生的相對位移量超過其防止落橋長度或防止落橋裝置之極限時,即發生落橋;因此,防止落橋乃橋梁耐震因應對策中非常重要的課題。本論文旨在討論橋梁功能性防落裝置對於橋梁耐震性能的影響,希望對於工程師在日後設計或維修補強方面提供有效且經濟性的方法和分析流程。由於目前耐震設計以橋柱為主要消能構材,所以提供橋柱塑性鉸不同的模擬方法,以提供側推分析(Pushover)和非線性動力分析。為了了解防落裝置系統對於橋梁耐震性能之影響,本研究模擬分析一座位於台灣地區的實尺寸橋梁,並依據之前各防落設施裝置實驗研究結果,利用結構分析軟體(SAP2000)建立各防落設施之數值分析模型。探討在地震作用下,此橋梁在裝設不同防落設施後所發揮之效能。將結構分析軟體(SAP2000)之非線性動力分析結果經由希爾伯特-黃轉換(Hilbert-Huang Transform, HHT)後之2D希爾伯特頻譜(Hilbert spectrum)比較,以了解防落設施在頻率域之變化,找出防落設施裝置之作用時間與頻率之改變量。
論文英文摘要:In this thesis, the mechanical behaviors of bridge with functional unseating prevention devices were investigated. The functions of the devices are to prevent bridge from unseating and to prevent most of the seismic force transfer to the bridge column. The static pushover analysis with SAP 2000 was used to simulate the real bridge. The Hilbert-Huang Transform (HHT) was also used to transfer the time history response into the time-frequency domain and also to obtain the Hilbert spectrums of the superstructure. The Hilbert spectrums can determine when the functional unseating prevention devices were operated and their operation sequences.
論文目次:TABLE OF CONTENTS

摘 要 i
ABSTRACT ii
TABLE OF CONTENTS iii
LIST OF TABLES v
LIST OF FIGURES vi
LIST OF PHOTOS xi
CHAPTER 1 INTRODUCTION 1
1.1 Background 1
1.2 Objectives of the Research 2
1.3 Literature Rreview 3
1.4 Scope of the Research 11
CHAPTER 2 THE ANALYSIS OF BRIDGE COLUMN 13
2.1 Bridge Model 13
2.2 Plastic Hinge 15
2.2.1 COLRET Program 16
2.3 Define of Hinge Properties 17
2.3.1 Built-in default hinge properties 18
2.3.2 User-defined hinge properties 19
2.4 Analysis Results 20
CHAPTER 3 FUNCTIONAL BEARING SYSTEMS 22
3.1 Rubber Bearing 22
3.1.1 Elastomeric Bearing Property 22
3.1.2 Modeling of Bearing 27
3.2 Restrainers 29
3.2.1 Restrainer Property 30
3.2.2 Modeling of Restrainer 33
3.3 Shear keys 37
3.3.1 Shear Key Property 38
3.3.2 Modeling of Shear Key 39
CHAPTER 4 MODELING OF FUNCTIONAL BEARING SYSTEMS ANALYSIS RESULTS 42
4.1 Illustration of Numerial Model 43
4.2 Results of Bearing Analysis 44
4.3 Results of Restrainer Analysis 48
4.4 Results of Shear Keys Analysis 55
CHAPTER 5 FUNCTIONAL BEARING SYSTEMS FOR THROUGH THE HILBERT-HUANG TRANSFORM 58
5.1 The Hilbert-Huang Transform 58
5.1.1 Empirical Mode Decomposition Method 58
5.1.2 The Hilbert Spectral Analysis 59
5.2 HHT Analysis Results of Rubber Bearings 61
5.2.1 Deck Relative Displacement 61
5.2.2 Relative Displacement of Top of the Column 64
5.3 HHT Analysis Results of the Restrainer 66
5.3.1 Deck Relative Displacement 66
5.3.2 Relative Displacement of Top of the Column 69
5.4 HHT Analysis Results of the Shear Keys 71
5.4.1 Shear Keys (with rubber bearing only) 71
5.4.2 HHT Analysis Results of the Shear Keys (with rubber bearing and restrainer) 74
5.5 Review of HHT Findings 79
CHAPTER 6 DISCUSSION and CONCLUSIONS 83
REFERENCES 85
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論文全文使用權限:同意授權於2008-08-28起公開