Browse > Article
http://dx.doi.org/10.7855/IJHE.2011.13.2.147

Reliability Analysis of Concrete Road Bridge Designed with Different Resistance Factor Format  

Paik, In-Yeol (경원대학교 토목환경공학과)
Sang, Hee-Jung (비엔에스엔지니어링)
Publication Information
International Journal of Highway Engineering / v.13, no.2, 2011 , pp. 147-157 More about this Journal
Abstract
As a background study to apply the reliability-based resistance factors to the domestic concrete bridge design code, a comparative study is conducted for the design results and the reliability indexes obtained by adopting different resistance factor formats to yield the design strength of concrete structures. The design results which are calculated by applying the section resistance factors of the current domestic design code and the material resistance factors of Eurocode are compared for the concrete beam bridge. The reliability index is calculated by considering the uncertainties involved in material, dimension and strength equation during the design procedure to get the strength of concrete structure. Also, the sensitivity analysis is performed to figure out which design variables have great impact on the reliability index. The resistance factors of the current domestic bridge design code, AASHTO LRFD and Eurocode are applied to the bridge design for flexure and shear strength and the results show that the resistance factors of the domestic code give the largest reliability indexes. It is observed that the probabilistic distribution of the live load makes difference for the reliability index and the yield strength of reinforcing steel and the live load have great impact on the reliability of both flexural and shear strength of concrete beam through the sensitivity analysis.
Keywords
section resistance factor; material resistance factor; reliability index; sensitivity analysis; concrete bridge design;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Nowak, A. S. and Szerszen, M. M. (2003), Calibration of Design Code for Buildings (ACI 318): Part 1 & Part 2, V.100, No. 3.
2 Nowak, A. S, Yamani, A. S, and Tabsh, S. W (1994), Probabilistic Models for Resistance of Concrete Bridge Girders, ACI Strucrural Journal, V.91, No. 3, May-June 1994, pp. 269-276.
3 정영수, 신현목, 김우, 이재훈 (2005), "콘크리트 교량의 신뢰도기반 한계상태 설계기준 체계", 대한토목학회 학술발표회 논문집
4 황의승, 백인열 (2006), "신뢰도기반 설계기준의 기본 이론 및 설계일반", 교량설계핵심기술연구단
5 백인열, 심창수, 정영수, 상희정 (2011), "국내 현장의 콘크리트, 철근 및 강연선 재료강도에 대한 통계특성 분석", 콘크리트학회논문집, 제23권 4호.
6 American Association of State Highway and Transportation Officials (AASHTO). (1998 & 2004 & 2007), AASHTO LRFD Bridge Design Specifications. Washington, DC.
7 CEN, EN (2002), Eurocode 2: Design of Concrete Structures, European Committee for Standardization.
8 Ellingwood, B., Galambos, T.V., MacGregor, J. G., and Cornell, C. A. (1980), Development of a Probability Based Load Criterion for American National Standard A58, NBS Special Publication 577. Washington, DC: National Bureau of Standards.
9 Melchers, R. E. (1999), Structural Reliability Analysis and Prediction, John Wiley & Sons.
10 Nowak, A. S. (1999), Calibration of LRFD Bridge Design Code, Report 368, Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor.
11 Nowak, A. S. and Collins, K. R. (2000), Reliability of Structures, McGraw- Hill.
12 건설교통부 (2010), "도로교설계기준" , 한국도로교통협회