具有漸近破壞機制之鋼結構斜撐構架耐震性能研究

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姓名

艾譜圖(I Putu Ellsa Sarassantika) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

具有漸近破壞機制之鋼結構斜撐構架耐震性能研究
(Seismic Performance of Steel Braced Frames With Progressive Failure Mechanism)

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摘要(中)

一種新式的被動型阻尼器，亦即脊椎阻尼器，由消能板、間隙及漸進加載機制組成，以提高構架之性能。
脊椎阻尼器位於斜撐之兩側，並連接到半剛性構架，形成斜撐構架。漸進加載機制由標準螺栓孔和各種長度之滑槽組成，用於控制各種消能板的啟動。該設計不僅增強了抗彎構架之強度、剛度及能量消散。此外，該設計提供阻尼器消能板部分失效之方案，因此有效地維持結構之性能。本研究以該阻尼器進行一系列脊椎阻尼器和斜撐構架的循環加載試驗。試驗結果表明，構架之強度、剛度及能量消散得到有效的提高。亦可發現，漸進加載機制的構架變形能力得到了充分的改善，可證明該方法的適用性。

摘要(英)

A new type of passive damper, namely backbone damper, consisting of energy plates, gap system and progressive loading mechanism was proposed to improve the performance of framed structures.
The backbone dampers were located at the two sides of a brace and were connected to the semi-rigid frame, forming a braced frame. The progressive loading mechanism is composed of standard bolt holes and slots with various lengths to control the initiation of various energy plates. This design not only enhanced the strength, stiffness and energy dissipation of the moment frame. In addition, the design provided a scheme to allow partial failure of the energy plates, thus effectively sustained the performance of the structure. A series of cyclic loading tests on the backbone dampers and braced frames with the proposed dampers were conducted. Test results showed that the strength, stiffness and energy dissipation of the framed structures were effectively improved. It is also validated from the tests that the deformation capacity of frames with progressive loading mechanism was adequately improved, thus justified the applicability of the proposed method.

關鍵字(中)

★ 阻尼器
★ 能量消散
★ 漸進加載
★ 耐震性能
★ 斜撐構架

關鍵字(英)

★ Damper
★ energy dissipation
★ progressive loading
★ seismic performance
★ braced frame

論文目次

ABSTRACT i
ACKNOWLEDGEMENTS iii
TABLE OF CONTENTS iv
LIST OF TABLES viii
LIST OF FIGURES ix
CHAPTER I INTRODUCTION 1
1.1. Background 1
1.2. Motivations 2
1.3. Objectives 3
1.4. Outlines 3
CHAPTER II LITERATURE REVIEW 4
2.1. Evaluation of Structural Performance 4
2.2. Redundancy Structural Systems 4
2.3. Progressive Failure Mechanism 5
2.4. Steel Frames with Semi-Rigid Connection 6
2.5. Concentrically Braced Frame 7
2.6. Concentrically Braced Frame with Eccentric Gusset 7
CHAPTER III METHODOLOGY 9
3.1. Theory 9
3.1.1. Strong Column Weak Beam Philosophy 9
3.1.2. Bolted Top and Seat Angle Connection 10
3.1.3. Double Web Angle with Slot Connection 10
3.1.4. Energy plate of the Damper 11
3.1.4.1. Brace with Damper 11
3.1.4.2. Bending Capacity of Beam 11
3.1.5. Hinge Gussets and High Strength Bolt 12
3.1.6. Strength of Damper 12
3.1.7. Progressive loading Mechanism 13
3.2. Finite Element Analysis 13
3.2.1. Analytical Model for Plate Simulation 14
3.2.2. Analytical Model for Brace Response Simulation 15
3.2.3. Analytical Model for Frame Response Simulation 16
3.2.4. Chaboche Kinematic Hardening for Cyclic Analysis 18
3.3. Mechanism of Damper 18
CHAPTER IV EXPERIMENTAL PROGRAM 20
4.1. General 20
4.2. Specimen Design 20
4.2.1. Set-Up for Component Tests 21
4.2.2. Set-Up for Frame Tests 22
4.3. Specimen Details 22
4.3.1. Brace member 22
4.3.2. Component Test 22
4.3.3. Semi Rigid Moment Frame (Bare Frame) 23
4.3.4. Braced Frame Test 23
4.4. Materials 24
4.5. Specimen Construction 24
4.6. Instrumentation 24
4.6.1. Strain Gauges 24
4.6.2. Transducers 25
4.6.3. Data Acquisition System 25
4.7. Lateral Support 25
4.8. Loading Protocol 25
CHAPTER V RESULT AND OBSERVATION 26
5.1. General 26
5.2. Experimental Observations 26
5.2.1. Specimen 1 (1 Stage Component Test/1SC) 26
5.2.2. Specimen 2 (2 Stage Component Test/2SC) 27
5.2.3. Specimen 3 (3 stage Component Test/3SC) 28
5.2.4. Specimen 4 (Bare Frame/BF) 28
5.2.5. Specimen 5 (1 Stage Frame Test/1SF) 29
5.2.6. Specimen 6 (2 Stage Frame Test/2SF) 30
5.2.7. Specimen 7 (3 Stage Frame Test/3SF) 30
CHAPTER VI COMPARISONS AND DISCUSSIONS 32
6.1. General 32
6.2. Comparisons of Strength between Tests and Finite Element Simulation 32
6.3. Stiffness 32
6.4. Strength 34
6.5. Deformation Capacity 35
6.6. Energy Dissipation 35
6.7. Performance Evaluations 36
6.8. Design Recommendations 37
CHAPTER VII CONCLUSIONS 38
7.1. General 38
7.2. Suggestions 39
REFERENCE 40
TABLES 44
FIGURES 49

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指導教授

許協隆(Hsieh-Lung Hsu)

審核日期

2017-8-2

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