환경하중과 B777 항공기 기어하중을 이용한 공항 콘크리트 포장의 최대인장응력 예측모형 개발

다국어 초록 (Multilingual Abstract)

PURPOSES : Previously, airport concrete pavement was designed using only aircraft gear loading without consideration of environmental loading. In this study, a multiple-regression model was developed to predict maximum tensile stress of airport concrete pavement based on finite element analysis using both environmental and B777 aircraft gear loadings.
METHODS: A finite element model of airport concrete pavement and B777 aircraft main gears were fabricated to perform finite element analysis. The geometric shape of the pavement, material properties of the layers, and the loading conditions were used as input parameters for the finite element model. The sensitivity of maximum tensile stress of a concrete slab according to the variation in each input parameter was investigated by setting the ranges of the input parameters and performing finite element analysis. Based on the sensitivity analysis results, influential factors affecting the maximum tensile stress were found to be used as independent variables of the multi regression model. The maximum tensile stresses predicted by both the multiple regression model and finite element model were compared to verify the validity of the model developed in this study.
RESULTS: As a result of the finite element analysis, it was determined that the maximum tensile stress developed at the bottom of the slab edge where gear loading was applied in the case that environmental loading was small. In contrast, the maximum tensile stress developed at the top of the slab center situated between the main gears in the case that the environmental loading got larger. As a result of the sensitivity analysis and multiple regression analysis, a maximum tensile stress prediction model was developed. The independent variables used included the joint spacing, slab thickness, the equivalent linear temperature difference between the top and bottom of the slab, the maximum take-off weight of a B777 aircraft, and the composite modulus of the subgrade reaction. The model was validated by comparing the predicted maximum tensile stress to the result of the finite element analysis.
CONCLUSIONS : The research shown in this paper can be utilized as a precedent study for airport concrete pavement design using environmental and aircraft gear loadings simultaneously.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 유한요소모형 개발
• 3. 인자의 범위 선정
• 4. 유한요소해석 결과
• 5. 민감도 분석
• 6. 최대인장응력 예측모형 개발
• 7. 결론
• REFERENCES

참고문헌 (Reference)

1 김성민, "환경하중과 차량하중에 대한 줄눈콘크리트포장의 최대인장응력 특성 분석" 한국콘크리트학회 19 (19): 449-456, 2007

2 박주영, "공항 콘크리트 포장 설계를 위한 환경하중 산정방법 개발" 대한토목학회 33 (33): 729-737, 2013

3 박해원, "공항 콘크리트 포장 구조해석을 위한 3차원 유한요소 모형 개발" 한국도로학회 19 (19): 67-74, 2017

4 UFC, "UFC 3-260-02 Pavement Design for Airfields" Unified Facilities Criteria, National Institute of Building Sciences 2001

5 El-Tawil, S., "Strength and Ductility of FR Welded-Bolted Connections" SAC Joint Venture 1998

6 MLTMA, "Road Pavement Structure Design Guide"

7 Hong, D. S., "Quantification of Environmental Loading Considering Temperature and Humidity Characteristics for Domestic Airport Concrete Pavements" Inha University 2012

8 Westergaard, H. H., "New Formulas for Stresses in Concrete Pavements of Airfields" 113 : 425-444, 1948

9 Ricles, J. M., "Inelastic Cyclic Testing of Welded Unreinforced Moment Connections" 128 (128): 429-440, 2002

10 Park, J. Y., "Environmental Load for Design of Airport Concrete Pavements" 168 (168): 139-149, 2015

11 Kim, N. H., "Effect of Access Hole Configuration Parameters on Cyclic Behavior for WUF-W Connections" 36 (36): 726-731, 2016

12 Park, J. Y., "Development of Regression Model for Concrete Pavement Slab Fatigue Considering Environmental Loading" Inha University 2011

13 Lu, L. W., "Critical Issues in Achieving Ductile Behavior of Welded Moment Connections" 55 (55): 325-341, 2000

14 Kim, Y. T., "Analysis of Stress in Airport Concrete Pavement Caused by Double Duals in Tandem Gear Loading" Inha University 2014

15 IIAC, "Airport Traffic Report" Incheon International Airport Corporation 2017

16 IIAC, "Airport Traffic Report" Incheon International Airport Corporation 2016

17 Lee, J. H., "Airport Concrete Pavement Design by Environmental and Double Dual Tandem Gear Loadings" 1-11, 2017

18 IIAC, "AIRSIDE Pavement Condition Evaluation Final Report" Incheon International Airport Corporation 2015

19 IIAC, "AIRSIDE Pavement Condition Evaluation Final Report" Incheon International Airport Corporation 2013

20 FAA, "AC 150/5320-6F: Standard for Airport Pavement Design and Evaluation" Office of Airport Safety and Standards, Federal Aviation Administration, U.S. Department of Transportation 2016

21 FAA, "AC 150/5320-6E: Standard for Airport Pavement Design and Evaluation" Office of Airport Safety and Standards, Federal Aviation Administration, U.S. Department of Transportation 2009

22 FAA, "AC 150/5320-6D: Standard for Airport Pavement Design and Evaluation" Office of Airport Safety and Standards, Federal Aviation Administration, U.S. Department of Transportation 1995

23 Park, M. K., "A Study on Friction between Slab and Different Types of Base of Concrete Pavement" Inha University 2009

24 Liu, J. H., "A Mechanistic Design Method for Airport Concrete Pavements Considering Environmental and Dual Tandem Gear Loads" Inha University 2015