Publications
Detailed Information
횡풍에 대한 교량 상 차량의 주행안전성 평가 : Runnability Assessment of Vehicle on Bridge for Cross Wind
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 김호경 | - |
| dc.contributor.author | 김세진 | - |
| dc.date.accessioned | 2017-07-14T04:16:30Z | - |
| dc.date.available | 2017-07-14T04:16:30Z | - |
| dc.date.issued | 2015-02 | - |
| dc.identifier.other | 000000026518 | - |
| dc.identifier.uri | https://hdl.handle.net/10371/124296 | - |
| dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 건설환경공학부, 2015. 2. 김호경. | - |
| dc.description.abstract | This paper presents a method for assessing vehicle runnability on a bridge with respect to wind direction, vehicle characteristics, and bridge girder shape.
The assessment method is composed of three steps. The first step estimate the critical wind speeds of vehicles for 16 wind directions. To estimate the critical wind speed, vehicle dimensions and aerodynamic coefficients are used. Critical wind speed is estimated for sideslip and overturning accidents. The second step involves the derivation of probability distribution models. In this study, wind data observed for a period of 30 years were obtained from the nearest weather station to the bridge site. Wind tunnel tests were also performed to measure the effect of girder shape on wind reduction. Lastly, the number of exceedance days which, the risk index, was calculated by using the results from the first and second steps. Number of exceedance days can be estimated for each lane and the relative risks between wind directions can also be compared. In addition, the influence of some parameters on runnability was examined in which vehicle speed, vehicle type, and loading weight were investigated. | - |
| dc.description.tableofcontents | ABSTRACT I
TABLE OF CONTENTS II LIST OF FIGURES V LIST OF TABLES VII CHAPTER 1. INTRODUCTION 1 1.1 RESEARCH BACKGROUND 1 1.2 RESEARCH SCOPE 3 CHAPTER 2. CALCULATION OF CRITICAL WIND SPEED 5 2.1 FUNDAMENTAL CONCEPT OF CALCULATION 5 2.2 SIMPLE STATIC ANALYSIS 6 2.2.1 Equilibrium Equation 7 2.2.2 Constraint and Constitutive Equations 9 2.2.3 Aerodynamic Forces and Moments 10 2.2.4 Solution for Contact Force and Side Friction Force 12 2.3 CASE STUDY 13 2.3.1 Dimension and Aerodynamic Coefficient Data of Vehicle Model 13 2.3.2 Analysis Results 16 CHAPTER 3. WIND ENVIRONMENTAL ANALYSIS AT A BRIDGE CONSTRUCTION SITE 19 3.1 INVESTIGATED SITE AND FORM OF WIND DATA 19 3.2 CORRECTION FACTOR FOR ROUGHNESS AND ELEVATION 21 3.3 CONSIDERATION OF EFFECT OF GIRDER ON WIND PROFILE 22 3.3.1 Wind Speed Reduction Factor 22 3.3.2 Experimental Setup 23 3.3.3 Test Result 27 3.4 ESTIMATION OF CUMULATIVE DISTRIBUTION FUNCTION 33 3.4.1 Wind Direction 33 3.4.2 Probability Distribution Model 35 CHAPTER 4. CALCULATION OF THE NUMBER OF EXCEEDANCE DAYS 37 4.1 PROBABILITY OF EXCEEDING THE CRITICAL WIND SPEED 37 4.2 CALCULATION RESULT 38 4.3 PARAMETER STUDY 43 4.3.1 Vehicle speed 43 4.3.2 Vehicle type 45 4.3.3 Loading weight 46 CHAPTER 5. CONCLUSIONS 50 REFERENCES 53 | - |
| dc.format | application/pdf | - |
| dc.format.extent | 2068362 bytes | - |
| dc.format.medium | application/pdf | - |
| dc.language.iso | en | - |
| dc.publisher | 서울대학교 대학원 | - |
| dc.subject | 차량주행안전성 | - |
| dc.subject | 횡풍 | - |
| dc.subject | 교량 | - |
| dc.subject.ddc | 624 | - |
| dc.title | 횡풍에 대한 교량 상 차량의 주행안전성 평가 | - |
| dc.title.alternative | Runnability Assessment of Vehicle on Bridge for Cross Wind | - |
| dc.type | Thesis | - |
| dc.contributor.AlternativeAuthor | Kim Sejin | - |
| dc.description.degree | Master | - |
| dc.citation.pages | vii, 56 | - |
| dc.contributor.affiliation | 공과대학 건설환경공학부 | - |
| dc.date.awarded | 2015-02 | - |
- Appears in Collections:
- Files in This Item:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.