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研究生： TRUONG AN NHIEN
TRUONG - AN NHIEN
論文名稱： L與T形鋼筋混凝土柱反覆載重行為
Cyclic Behavior of L- And T-shaped Reinforced Concrete Columns
指導教授： 歐昱辰
Yu-Chen Ou
口試委員: 鄭敏元
Min-Yuan Cheng
黃世建
Shyh-Jiann Hwang
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： 2016
畢業學年度： 104
語文別： 英文
論文頁數： 157
中文關鍵詞： 鋼筋混凝土 、柱 、L形 、T形 、反覆載重
外文關鍵詞： L-shaped, T-shaped
相關次數： 點閱：405  下載：12 
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    The L-shaped and T-shaped section columns are commonly found in the corners and the edges of the buildings. Compared with the conventional rectangular column, these kinds of columns have advantages of optimizing the structure strength and making better use of the living space. Particularly in Taiwanese street houses, L- and T-shaped columns can be constructed on the first floor to provide a better seismic resistance and prevent the soft-story mechanism along the weak direction of the building.
    In this study, ten specimens including four L-shaped columns and six T-shaped columns were tested under combined axial and cyclic loading. An innovative method was proposed to retrofit the conventional rectangular columns into L- and T-shaped columns. The seismic performance of the columns was investigated in term of failure mechanism, crack patterns, hysteric response, strain of reinforcement, energy dissipation and displacement composition. The test results featured that the L- and T-shaped column possessed a good seismic capacity with an adequate lateral strength and significant ductility. The shear behavior of L- and T-shaped column were also studied by the shear failure of three specimens.
    An evaluation of the lateral strength of L- and T-shaped monolithic and retrofitted columns was conducted using the current design code. The results highlighted that the code P-M interaction analysis method could satisfactorily estimate the nominal moment and maximum probable moment could be conservatively estimated by 1.3 times of the nominal moment.
    A pushover analysis was proposed. The analytical results were well matched with test results in term of initial stiffness and maximum lateral force; however, the drifts estimation was not very accurate, especially for the shear critical columns.

    ABSTRACT ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES LIST OF NOTATIONS Chapter 1. INTRODUCTION 1.1 Background 1.2 Objectives and Scope 1.3 Outline 17 Chapter 2. LITERATURE REVIEW 2.1 Material modelling 2.2 Pushover analysis 2.3 Shear reinforcement requirements 2.4 Shear strength calculation 2.5 Review previous research Chapter 3. EXPERIMENTAL PROGRAM 3.1 Specimens design 3.2 Specimens preparation 3.3 Materials 3.4 Retrofitting methodology 3.5 Test setup Chapter 4. TEST RESULTS 4.1 Test observations 4.2 Compare test results 4.3 Strain gauges reading 4.4 Energy dissipation and displacement composition 4.5 Analysis Chapter 5. CONCLUSIONS REFERENCES APPENDIX A – CRACK PATTERNS APPENDIX B – STRAIN READING APPENDIX C – RESULTS OF TENSILE STRENGTH TEST

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