Evaluation of Structural Responses using Finite Measured Displacements
- 주제(키워드) Structural Health Monitoring , Displacement Measurement , Structural Deformed Shape , Interpolation , ESReM SFSM-LS , GNSS , Structural Response , FEA
- 발행기관 고려대학교 대학원
- 지도교수 강영종
- 발행년도 2013
- 학위수여년월 2013. 8
- 학위구분 박사
- 학과 일반대학원 건축사회환경공학과
- 세부전공 구조공학
- 원문페이지 153 p
- 실제URI http://www.dcollection.net/handler/korea/000000046204
- 본문언어 영어
- 제출원본 000045764699
초록/요약
The measured structural displacements which reflect static, quasi static and dynamic response of the monitored structures present important structural information. If the sufficient measuring points are secured at the monitoring system, more clear and precious global structural deformation shapes can be obtained and the internal forces of the structures can be also estimated by the structural shapes with effective inverse structural analysis methods. But, the precious estimation of the global structural shapes might be difficult if sufficient measuring points are not secure under cost limitations. In this study, algorithm which the economic and effective estimation method for the structural deformation shapes with limited displacement measuring points is developed and suggested. By quantitative comparison of estimation results with the conventional methods such as polynomial, Lagrange and spline interpolation, the applicability and accuracy of the suggested method was validated. And also numerical analysis and experimental analysis are performed to verify developed algorithm.
more목차
Chapter 1. Introduction 1
Chapter 2. Literature Review 3
2.1 Structural Health Monitoring 3
2.2 Applications of Measured displacement 7
2.3 Conventional Deformed Shape of Structure 9
2.3.1 Interpolation Methods 9
2.3.2 Conventional Shape Functions 11
Chapter 3. Objectives and Scopes 13
Chapter 4. Structural Deformed Shape Estimation 14
4.1 Introduction 14
4.2 Algorithm Development 15
4.2.1 Structural Shape Function 16
4.2.2 Measured Displacement Data 18
4.2.3 Error Function Formulation 18
4.2.4 Calculation of Weight Factor 20
4.3 Program Development (ESReM SFSM-LS 1.0) 24
4.4 Program and Algorithm Verification 27
Chapter 5. Internal Force Evaluation 30
Chapter 6. Numerical Analysis Verification 32
6.1 Introduction 32
6.1.1 Error Index 34
6.1.2 Structural Shape Function Convergence 35
6.1.3 Displacement Measurement Location 36
6.2 Truss Element Structure 37
6.2.1 Introduction 37
6.2.2 Real Deformed Shapes (RDS) 38
6.2.3 Displacement Measurement Location 39
6.2.4 Deformed Shapes Estimation Results 40
6.2.5 Internal Force Estimation Results 42
6.3 Beam Element Structure 44
6.3.1 Introduction 44
6.3.2 Real Deformed Shapes (RDS) 45
6.3.3 Displacement Measurement Location 46
6.3.4 Deformed Shapes Estimation Results 47
6.2.5 Internal Force Estimation Results 49
6.2.6 Interpolation methods vs ESReM SFSM-LS 1.0 51
6.4 Truss + Beam Element Structure 58
6.4.1 Introduction 58
6.4.2 Cable-Stayed Bridge FE Model 59
6.4.3 Real Deformed Shapes (RDS) 60
6.4.4 Displacement Measurement Location 61
6.4.5 Cable-Stayed Bridge Initial shape Analysis 62
6.4.6 Deformed Shapes and Internal Forced Estimation Results 64
6.4.7 Cable Axial Force 88
6.4.8 Estimation Results 89
Chapter 7. Experimental Verifications using Global Navigation Satellite System 91
7.1 Introduction 91
7.2 Experimental Model 92
7.2.1 Design of Experimental Model 92
7.2.2 FE Analysis Model 97
7.3 Displacement Sensors and Experimental Procedure 98
7.4 GNSS Measuring System 101
7.4.1 Principle of Measuring technique using GNSS 101
7.4.2 Determination of GNSS Reference Station 104
7.4.3 Calculate Reference Station Coordinate 110
7.4.4 Real Time Kinematic Displacement 112
7.5 GNSS Measured Data Analysis 114
7.5.1 Static State Data 114
7.5.2 Moving State Data 115
7.6 Experimental Results 118
7.6.1 Input Data of ESReM SFSM-LS 1.0 118
7.6.2 Static State Result 123
7.6.3 Moving State Result 133
Chapter 8. Conclusions 138
Chapter 9. References 139
