H梁側向扭轉挫屈自束制工法設計方法之建立｜國立臺灣科技大學博碩士論文系統

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研究生：	聶健全 Yonatan Septian Wijaya
論文名稱：	H梁側向扭轉挫屈自束制工法設計方法之建立 Development of Design Methodology for Buckling Self-Restrained Girder (BSRG)
指導教授：	楊亦東 I-Tung Yang 陳正誠 Cheng-Cheng Chen
口試委員:	楊亦東 I-Tung Yang 陳正誠 Cheng-Cheng Chen 郭程輝 Erwin 蕭博謙 Po-Chien Hsiao 陳煥煒 Huan-Wei Chen
學位類別：	碩士 Master
系所名稱：	工程學院 - 營建工程系 Department of Civil and Construction Engineering
論文出版年：	2022
畢業學年度：	110
語文別：	英文
論文頁數：	116
中文關鍵詞：	Lateral torsional buckling 、seismic design 、finite element analysis
外文關鍵詞：	Lateral torsional buckling, seismic design, finite element analysis
相關次數：	點閱：168 下載：1
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上一筆

In recent years, a new lateral torsional buckling prevention method named buckling self-restrained girder (BSRG) was invented and the feasibility of the proposed method has been verified through experimental test. However, the design methodology provided is only briefly established based on the results of simplified finite element analysis (FEA) model and the applicability of the current design method is still very limited. In current study, a more realistic FEA model is established and used to do a series of parametric study to improve the currently existing design methodology. The design methodology resulted from current study including the determination of the required length and stiffness of the buckling restraining device (BRD). In addition, the method to design the connections detail is also provided in this study which include the determination of connections configuration, required strength of the connection elements, and reserved space required for the connection elements to slip. The reliability of the proposed design method is verified through analyzing 50 BSRGs designed using the proposed design methodology and the results show that the proposed design method is conservative enough.

Abstract    i
Acknowledgment    ii
Table of Contents    iii
List of Tables    vi
List of Figures    viii
List of Notations    xii
CHAPTER 1 INTRODUCTION    1
1.    Research Background    1
2.    Scope and Objective    3
3.    Thesis Structure    4
CHAPTER 2 LITERATURE REVIEWS    7
1.    Lateral Torsional Buckling of H-shaped Steel Beam    7
2.    Lateral Torsional Buckling of Beams in Special Moment Resisting Frame When Subjected to Seismic Loading    7
3.    Beam with Conventional Bracing    9
4.    Partially Concrete Encased Steel Beams (PE beams)    10
5.    Beams with Side Plates    11
6.    Buckling Self-Restrained Girder (BSRG)    12
CHAPTER 3 ESTABLISHMENT AND VERIFICATION OF FINITE ELEMENT MODEL    23
1.    Establishment of Finite Element Analysis Model for Buckling Self-Restrained Girder    23
1.1.    Element Type    24
1.2.    Discretization and Meshing    25
1.3.    Contact Model    26
1.4.    Material Model    27
1.5.    Boundary Conditions and Constraints    29
1.6.    Initial Imperfection    30
1.7.    Loading Sequence    32
2.    Finite Element Model Validation    32
CHAPTER 4 PARAMETRIC STUDY    45
1.    Foreword    45
2.    Acceptance Criterion    46
3.    Finite Element Modeling    47
4.    Phase 1 – Analysis of Bare Beams    48
4.1.    The Effect of   and      49
4.2.    The effect of      51
4.3.    The Effect of      52
5.    Phase 2 – Twist of Standard Beams    53
6.    Phase 3 – Analysis of BSRG    54
6.1.    The Effect of Dimension of BRD on the Twist    55
6.2.    Foreword for required LR, IR, and MR    55
6.3.    The Configuration of the BSRG    56
6.4.    The Connection’s Detail of BSRG    57
6.5.    Dimension of the Connection in BSRG    58
6.6.    Required Reserved Space for Guided Connections    59
6.7.    The   Interaction Curve    60
6.8.    The Scale Effect of Beam on the Twist    61
6.9.    The Effect of   and   to Requirement of BRD    62
7.    Buckling of BRD    64
CHAPTER 5 DESIGN METHODOLOGY FOR BSRG    91
1.    Introduction    91
2.    Basic Requirement and Design Limitation for the Applicability of the Proposed Design Equation    91
3.    Buckling Restraining Devices (BRDs) Class Classification    92
3.1.    Effective length of BRDs and Number of Connections: Class 1    92
3.2.    Effective length of BRDs and Number of Connections: Class 2    93
4.    Design Formula Verification    94
4.1.    Verification of Proposed Design Methodology for BRD with A572 Gr.50 Steel Material    94
4.2.    Verification of Proposed Design Methodology for BRD with SN490B Steel Material    95
5.    Design Example: BRD on the bottom of beam bottom flange    96
CHAPTER 6 CONCLUSION    109
1.    Conclusion    109
2.    Recommendation for Future Study    111
REFERENCES    112
APPENDIX    115

                                

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