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研究生： 李綺芸
Sosa, Lisha Gineli
論文名稱： 鋼筋混凝土結構受地震載重之三維有限元素分析
Finite Element 3D Modeling of Reinforced Concrete Structures Subject to Earthquake Loading
指導教授： 胡宣德
Hu, Hsuan-Teh
共同指導教授: 蕭輔沛
Hsiao, Fu-Pei
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2018
畢業學年度： 106
語文別： 英文
論文頁數： 115
外文關鍵詞： finite element analysis, concrete damaged plasticity, Abaqus, dynamic analysis, seismic behavior, shake table
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    • Shaking table experiments of relatively large-scale specimens have become crucial in deepening our understanding of how reinforced concrete structures respond to seismic movements. When these dynamic tests are modeled numerically, they can provide a wealth of information to engineers and designers at a more cost-effective rate than laboratory type testing. Many commercial software programs can perform three-dimensional structural analysis; however, they have limitations in their analytical functions and capabilities to model complex composite materials such as reinforced concrete. This project will develop a 3D finite-element model of a ½ scaled three-story reinforced concrete building tested under dynamic conditions applied through a triaxial shaking table housed at the National Center for Research on Earthquake Engineering located in Tainan. The building specimen is representative of many mid-rise buildings in Taiwan that were damaged during earthquakes such as the 1999 Chi-Chi earthquake and the 2016 Meinong earthquake. The finite-element analysis will be done using the advanced computer software ABAQUS/Standard and will take advantage of the concrete damaged plasticity material model. Also, solid elements will be used to model the concrete and truss elements to model the steel rebars. Results of a linear dynamic analysis showed that acceleration and displacement time-history data compared well with experimental results thereby indicating that the ABAQUS concrete damaged plasticity model can successfully be used to model reinforced concrete to predict the dynamic behavior of structures.

    Table of contents ABSTRACT i ACKNOWLEDGMENTS ii LIST OF TABLES vi LIST OF FIGURES vii CHAPTER 1: INTRODUCTION 1 1.1 Overview 1 1.2 Motivation and case study 3 1.3 Objectives 4 1.4 Thesis structure 5 1.5 Research procedure 6 CHAPTER 2: LITERATURE REVIEW 7 2.1 Seismology 7 2.1.1 General information 7 2.1.2 Seismic waves 9 2.1.3 Seismic magnitude and intensity 11 2.2 Earthquake engineering 12 2.2.1 Earthquake demand vs. earthquake capacity 14 2.3 Plain concrete 15 2.3.2 Elastic and plastic strain 16 2.2.3 Coupling between damage and plasticity theory 18 2.3 Abaqus concrete damage plasticity model 19 2.3.1 Mechanical behavior of concrete 20 2.3.1.1 Uniaxial tension and compression loading response 21 2.3.1.2 Uniaxial cyclic response 22 2.3.1.3 Tension stiffening 24 2.3.1.4 Compression Hardening 25 2.3.1.5 Concrete plasticity 27 2.4 Steel behavior 30 2.5 Finite element analysis 31 2.5.1 Element type 31 2.5.1.1 Solid elements 31 2.5.1.2 Truss elements 34 2.5.2 Analysis type 34 2.5.2.1 Static linear analysis 35 2.5.2.2 Static nonlinear analysis 35 2.5.2.3 Dynamic analysis 36 CHAPTER 3: MATERIAL VALIDATION 37 3.1 Experimental test 37 3.1.1 Equipment and procedure 37 3.1.2 Results 40 3.2 Finite element modeling 43 3.2.1 Simplifications 43 3.2.2 Model geometry 44 3.2.3 Boundary conditions and interactions 45 3.2.4 Element type and meshing 46 3.2.5 Step solver 48 3.2.6 Material behavior 49 3.2.6.1 Steel material properties 49 3.2.6.2 Concrete material properties 50 3.3 Results and discussion 58 3.3.1 Linear static analysis 58 3.3.2 Nonlinear static analysis 61 CHAPTER 4: THREE-STORY BUILDING DYNAMIC ANALYSIS 67 4.1 Experimental test 67 4.1.1 Equipment and procedure 67 4.1.2 Results 69 4.2 Finite element modeling 73 4.2.1 Simplifications 73 4.2.2 Model geometry 74 4.2.3 Boundary conditions and interactions 76 4.2.4 Element type and meshing 77 4.2.5 Step solver 78 4.2.6 Material behavior 80 4.3 Results and discussion 82 4.3.1 Modal analysis 82 4.3.2 Linear dynamic analysis 85 4.3.3 Nonlinear dynamic analysis 89 CHAPTER 5: CONCLUSIONS 94 CHAPTER 6: LIMITATIONS AND SUGGESTIONS 96 REFERENCES 97 APPENDIX: INPUT FILES 100 Linear static analysis of Column A 100 Nonlinear static analysis of Column A 104 Linear dynamic analysis of the three-story building 107 Nonlinear dynamic analysis of the three-story building 112

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