支撐框架結構抗震性鋼製環形阻尼器

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姓名

阮瑞譚(Nguyen Tan Trac) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

支撐框架結構抗震性鋼製環形阻尼器
(Performance of Braced Frames with Steel Ring Dampers)

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摘要(中)

對於一個安全的耐震結構而言，好的消能能力、足夠的勁度表現是無可或缺的，本研究將探討環狀消能器結合於斜撐構架中所提升之整體結構性能表現之效果。研究中藉一系列配置不同環狀消能器組合之構架反覆載重試驗，評估其強度、變形及能量消散能力，以界定其在耐震設計之應用性。研究結果顯示，結合環狀消能器之斜撐構架能在外力加載下提供穩定的消能能力；也能有效地提升斜撐構架的強度與勁度，此顯示環狀消能器斜撐構架在結構之耐震設計上，具有相當之可行性。在有線元素法分析中，其結果與試驗成果相符。

摘要(英)

Adequate strength, stiffness and energy dissipation capabilities are essential for the safety of structures under seismic load. This study investigated the behavior of a new design, ring damper, and the performance of braced frames with the proposed damper. A series of cyclic loading tests on the ring dampers and the braced frames with the proposed dampers were carried out to evaluate their effectiveness in seismic design. It was found from the tests that stable hysteretic behavior of the ring damper was observed during the test. It was also validated that the strength, stiffness and energy dissipation of the framed structures equipped with the proposed dampers were significantly enhanced, which validated the effectiveness of the proposed design method. An analytical model for the strength prediction of the ring damper was proposed in this study. Results from finite element simulation were compared with those obtained from the proposed equation and the tests. Adequate accuracy was achieved from the comparisons thus justified the applicability of the proposed design and analytical method.

關鍵字(中)

★ 環狀消能器
★ 偏心斜撐構架
★ 能量消散
★ 耐震性能

關鍵字(英)

★ Ring dampers
★ Eccentrically braced frame
★ Energy dissipation
★ Seismic performance

論文目次

ABSTRACT i
TABLE OF CONTENTS iii
LIST OF TABLES vi
LIST OF FIGURES vii
CHAPTER 1 INTRODUCTION 1
1.1. Motivations 1
1.2. Objectives 1
1.3. Outlines 2
CHAPTER 2 LITERATURE REVIEW 3
2.1. Evaluating structure performance 3
2.2. Moment resisting frame 4
2.3. Concentrically Braced Frame (CBF) 4
2.4. Eccentrically Braced Frame (EBF) 5
2.5. Semi-Rigid Connection 6
2.6. Top and Seat Angle Connection 6
2.7. Energy Dissipation Device 6
CHAPTER 3 METHODOLOGY 8
3.1. Theory 8
3.1.1. Strong Column Weak Beam Philosophy 8
3.1.2. Bolted Top and Seat Angle Connection 9
3.1.3. Double Web Angle with Slot Connection 9
3.1.4. Ring Dampers 9
3.1.5. Stability of the ring damper 16
3.2. Finite Element Analysis 16
3.2.1. Analytical Model for Plate Simulation 16
3.2.2. Analytical Model for Frame Response Simulation 18
CHAPTER 4 EXPERIMENTAL PROGRAM 20
4.1. General 20
4.2. Specimen Design 20
4.2.1. Set-up for Component Tests 22
4.2.2. Set-up for Braced Frame Tests 22
4.3. Details of Specimens 22
4.3.1. Bracing member 22
4.3.2. Component Test 22
4.3.3. Semi Rigid Moment Frame 23
4.3.4. Braced Frame 23
4.4. Materials 24
4.5. Specimen Construction 24
4.6. Instrumentation 25
4.6.1. Strain Gages 25
4.6.2. Transducers 25
4.6.3. Data Acquisition System 26
4.7. Lateral Support 26
4.8. Loading Protocol 26
CHAPTER 5 RESULT AND OBSERVATION 27
5.1. General 27
5.2. Component tests 27
5.2.1. Specimen R25 27
5.2.2. Specimen R20 28
5.2.3. Specimen R15 29
5.3. Frame tests 30
5.3.1. Specimen FR25 30
5.3.2. Specimen FR20 31
5.3.3. Specimen FR15 31
CHAPTER 6 COMPARISONS AND DISCUSSIONS 33
6.1. General 33
6.2. Comparisons of Strength Between Experimental and Analytical Results.33
6.2.1. Results from Derived Equation 33
6.2.2. Finite Element Simulation 33
6.3. Stiffness 34
6.4. Strength 35
6.5. Deformation Capacity 36
6.6. Energy Dissipation 36
6.7. Performance Evaluations 37
6.8. Design Recommendations 38
CHAPTER 7 CONCLUSIONS 40
7.1. General 40
7.2. Suggestions 41
REFERENCES 42
TABLES 46
FIGURES 48

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指導教授

許協隆(Hsieh-Lung Hsu)

審核日期

2018-1-25

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