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研究生： 蘇上豪
Darwin - Su
論文名稱： Damage Evaluation Models for High-Strength Reinforced Concrete Beams and Columns with Shear Failure
Damage Evaluation Models for High-Strength Reinforced Concrete Beams and Columns with Shear Failure
指導教授： 邱建國
Chien-Kuo Chiu
口試委員: 吳子良
Tzu-Liang Wu
林克強
Ker-Chun Lin
陳瑞華
Rwey-Hua Cherng
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： 2013
畢業學年度： 101
語文別： 英文
論文頁數： 133
中文關鍵詞： hysteresis 、load-deformation curve 、reinforced concrete 、high strength 、damage evaluation
外文關鍵詞： hysteresis, load-deformation curve, reinforced concrete, high strength, damage evaluation
相關次數： 點閱：345  下載：13 
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    • A load-deformation curve for High Strength Reinforced Concrete (New RC) members with shear failure mechanism is developed based on analytical study from a set of experimental data. The developed model has four set of points: cracking point, maximum strength point, degradation point, and axial load failure point. In developing the model, reduction factors are introduced to modify the stiffness at cracking point and maximum point. The shear-friction model is used to calculate the degradation point and axial load failure point. Additionally, using the evaluated maximum stress of transverse reinforcement, the contribution of concrete can be calculated using Truss-Arch model. After maximum point is reached, which is degradation point, the contribution of concrete will decrease to zero and corresponding displacement will depends on axial capacity of longitudinal reinforcement in sustaining axial and lateral load. Using developed model, a new hysteresis rule also developed to capture the behavior of shear column. Developed models can be used in determining damage level of New RC members. Predicted damage level using developed models give a good comparison to experimental result.

    A load-deformation curve for High Strength Reinforced Concrete (New RC) members with shear failure mechanism is developed based on analytical study from a set of experimental data. The developed model has four set of points: cracking point, maximum strength point, degradation point, and axial load failure point. In developing the model, reduction factors are introduced to modify the stiffness at cracking point and maximum point. The shear-friction model is used to calculate the degradation point and axial load failure point. Additionally, using the evaluated maximum stress of transverse reinforcement, the contribution of concrete can be calculated using Truss-Arch model. After maximum point is reached, which is degradation point, the contribution of concrete will decrease to zero and corresponding displacement will depends on axial capacity of longitudinal reinforcement in sustaining axial and lateral load. Using developed model, a new hysteresis rule also developed to capture the behavior of shear column. Developed models can be used in determining damage level of New RC members. Predicted damage level using developed models give a good comparison to experimental result.

    ABSTRACT i ACKNOWLEDGEMENTS ii TABLES OF CONTENTS iii LIST OF FIGURES v LIST OF TABLES viii 1. INTRODUCTION 1 1.1 Background and Research Motivation 1 1.2 Objectives and Scopes 1 1.3 Outline 2 2. LITERATURE REVIEW 3 2.1 Previous Research 3 2.2 Combined Three-Spring Model 3 2.3 Shear Displacement Model 6 2.4 Modified Shear Displacement Model 9 2.5 Post-Peak Behavior of RC Columns 10 3. SKELETAL MODEL FOR NEW RC MEMBERS 18 3.1 Truss-Arch Model 18 3.1.1 Arch Mechanism 19 3.1.2 Truss Mechanism 20 3.2 Shear-Friction Model 20 3.2.1 Forces at Failure Plane 21 3.2.2 Maximum Drift Ratio 22 3.2.3 Crack Angle 23 3.3 Formulation 23 3.3.1 Columns 23 3.3.1.1 Flexure Failure 24 3.3.1.2 Shear-Flexure Failure 29 3.3.1.3 Shear Failure 30 3.3.2 Beams 35 3.4 Hysteresis Behavior 37 3.4.1 Hysteresis Rule 39 3.4.1.1 Columns 39 3.4.1.2 Beams 40 4. VERIFICATION 41 4.1 Data Resources and Test Results of New RC Columns 41 4.1.1 Shear Failure 41 4.1.2 Shear-Flexure Failure 46 4.1.3 Flexure Failure 46 4.2 Data Resources and Test Results of New RC Beams 49 4.3 Verification and Discussion 51 4.3.1 Flexure Columns 51 4.3.2 Shear-Flexure Columns 54 4.3.3 Shear Columns 55 4.3.4 Shear Beams 64 5. APPLICATION 70 5.1 Damage Classification of Structural Members 70 5.2 Relationship between Residual Displacement and Residual Shear Cracks 71 5.3 Analytical Study and Result 71 6. CONCLUSION AND SUGGESTIONS 80 6.1 Conclusions 80 6.2 Suggestions 80 APPENDIX A: Cycles Hysteresis Comparison 83

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