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Aerodynamic Behavior of Simple Suspension Footbridges : 현수 보행교의 공기역학적 거동 특성
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Ho-Kyung Kim | - |
| dc.contributor.author | Rudolf Teryong Starossek | - |
| dc.date.accessioned | 2020-05-07T03:24:49Z | - |
| dc.date.available | 2020-05-07T03:24:49Z | - |
| dc.date.issued | 2020 | - |
| dc.identifier.other | 000000160716 | - |
| dc.identifier.uri | http://dcollection.snu.ac.kr/common/orgView/000000160716 | ko_KR |
| dc.description | 학위논문(석사)--서울대학교 대학원 :공과대학 건설환경공학부,2020. 2. Ho-Kyung Kim. | - |
| dc.description.abstract | Due to the increasing number of simple suspension bridges being built in Korea, it is in the interest to the structural designers to evaluate their wind safety, as these bridges have some unusual properties and characteristics. To study and evaluate the aerodynamic behavior of common bridge decks certain assumptions and simplifications are made due to their static and aerodynamic behavior. Because of the differences of the simple suspension bridges flexible behavior that is closer to that of general cable structures, strong three-dimensional deformations occur in its dynamic modes, and therefore special considerations have to be made.
Main concern is that the coupled lateral and rotational mode is governing for flutter, and in case it is governing how to accurately predict it in analysis and experiment in an economic way. Since the most economic experimental approach is the section wind-tunnel test, it will be the focus of this paper. Other methods in experiments and analysis are discussed along with it. This paper will introduce a procedure to recognize in what bridges special considerations have to be taken in the aerodynamic approach and how to proceed with the analysis and experiment. | - |
| dc.description.abstract | 대한민국에 건설되는 보행 현수교의 수가 계속 증가하며, 이 교량의 일반적이지 안은 특성이 있기 때문에 내풍안전성을 평가하는 것이 구조 설계자에게 중요하다. 일반적인 교량 데크의 공기 역학적 거동을 연구하고 평가하기 위해 정적 및 공기 역학적 거동으로 인해 가정과 단순화가 이루어집니다. 보향형수교의 유연한 거동은 일반 케이블 구조에 가까운 거동으로 인해 동적 모드에서 강한 3 차원 변형이 발생하므로 특별한 고려가 필요합니다.
주요 관심사는 couple-된 수평 및 회전 모드가 플러터를 지배하는 경우이며, 분석 및 실험에서 경제적 방식으로 정확하게 예측하는 방법을 찾는 것입니다. 가장 경제적인 실험 방법은 풍동 단면실험이여서 이 논문의 초점입니다. 다른 실험 및 분석의 함께 논의됩니다. 이 논문은 공기 역학적의 특별히 고려해야 할 교량과 분석 및 실험을 진행하는 방법을 인식하는 절차를 소개합니다. | - |
| dc.description.tableofcontents | ABSTRACT I
TABLE OF CONTENTS III LIST OF FIGURES VI LIST OF TABLES X 1. INTRODUCTION 1 1.1. MOTIVATION 1 1.2. DEFINITION OF THE SIMPLE SUSPENSION BRIDGE 1 1.3. SIMILAR TYPES AND DISTINCTION 3 1.1.1. Suspension Bridge 4 1.1.2. Stressed Ribbon Bridge 4 1.1.3. Underspanned Bridge 4 1.1.4. Simple Suspended-deck Bridge Types 5 1.1.5. Recent Names for the Simple Suspension Bridge in Korea 5 2. PROBLEM DEFINITION, COMPARISON, DIFFERENCES 6 2.1. LITERATURE REVIEW 6 2.2. SCOPE AND LIMITATIONS: NON-LINEAR EFFECTS 8 2.3. STUDY BRIDGE: SOGEUM MOUNTAIN PEDESTRIAN BRIDGE 8 2.4. SECTION WIND-SAFETY ANALYSIS AND EXPERIMENT OF BRIDGES 10 2.5. CHARACTERISTICS OF THE SIMPLE SUSPENSION BRIDGE 11 3. BRIDGE AERODYNAMIC EVALUATION METHODS 17 3.1. STATIC WIND LOADING 17 3.2. DYNAMIC WIND LOADING: BUFFETING 20 3.3. SECTION WIND TUNNEL TEST 22 3.3.1. Commonly used Center of Rotation (COR) 23 3.3.2. Center of Rotation defined by Static or Modal Deformation 24 3.3.3. Equivalent Generalized Mass 29 3.3.4. Experiment Setup 30 3.4. FLUTTER ANALYSIS: VERIFICATION AND LIMITS IN ANALYSIS 33 3.4.1. Section Flutter Analysis with 2-DOF 34 3.4.2. 3-D Flutter Analysis 36 3.5. RESULTS AND COMPARISON 41 3.6. OTHER ANALYTICAL AND EXPERIMENTAL METHODS 44 3.6.1. Other Proposed Experimental Setups 44 3.6.2. Other Analytical Approaches 45 3.6.3. Pendulum Returning Force 47 3.6.4. Other Bridges 49 4. CABLE AERODYNAMICS – GALLOPING 50 4.1. VERTICAL GALLOPING 51 4.2. COUPLED HORIZONTAL-VERTICAL GALLOPING 51 4.3. EXPERIMENT SETUPS AND OTHER ANALYSIS 53 5. CONCLUSION AND RECOMMENDED PRACTICE 55 5.1. SUGGESTED PROCEDURE FOR SECTION WIND TUNNEL TEST 55 5.2. FURTHER STUDIES 56 REFERENCES 57 A. APPENDIX – COEFFICIENTS SIMPLE SUSPENSION BRIDGE 61 B. APPENDIX – FLEXIBLE SUSPENSION PEDESTRIAN BRIDGE OF SIMILAR CHARACTERISTICS 70 C. APPENDIX – MISCELLANEOUS GRAPHS & DATA 75 | - |
| dc.language.iso | eng | - |
| dc.publisher | 서울대학교 대학원 | - |
| dc.subject.ddc | 624 | - |
| dc.title | Aerodynamic Behavior of Simple Suspension Footbridges | - |
| dc.title.alternative | 현수 보행교의 공기역학적 거동 특성 | - |
| dc.type | Thesis | - |
| dc.type | Dissertation | - |
| dc.contributor.AlternativeAuthor | 스타로섹 테르용 | - |
| dc.contributor.department | 공과대학 건설환경공학부 | - |
| dc.description.degree | Master | - |
| dc.date.awarded | 2020-02 | - |
| dc.identifier.uci | I804:11032-000000160716 | - |
| dc.identifier.holdings | 000000000042▲000000000044▲000000160716▲ | - |
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