Browse > Article
http://dx.doi.org/10.5762/KAIS.2018.19.5.650

Behavior Analysis of Approach Slabs of IPM Bridges according to Unsupported Length and Settlement  

Park, Min-Cheol (Department of Civil Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.5, 2018 , pp. 650-660 More about this Journal
Abstract
The approach slab plays an important role in the driving comfort of the connection section on a bridge. On the other hand, the approach slab only calculates the section force of a simple beam, and does not analyze the behavior. In this study, the unsupported length and settlement of approach slabs of IPM Bridges were examined using structural analysis. First, the section force was calculated by designing a simple beam, according to the length of the approach slab. The structural analysis was conducted to examine the behavior of the unsupported length and settlement. As the result, the bending moment decreased when the unsupported length was increased, and the bending moment increased when the settlement was increased. In addition, the design section force was estimated to be larger than the force of structural analysis, and the design of the approach slab according to the design guideline showed no problem in stability. Nevertheless, the vertical displacement exceeded the maintenance criterion of a 1/200 curve when the settlement exceeded 10 mm regardless of the unsupported length. Therefore, excessive settlement occurs in the reinforced earth retaining wall supporting the approach slab, and the design bending moment may be exceeded. Therefore, strict management is required.
Keywords
Approach slab; Bump; IPM Bridge; Structural analysis; Unsupported length;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Expressway & Transportation Research Institute, "Developement of A New Concept Abutment", EXTRI-2016-47-534.9607, Korea Expressway Corporation, 2016.
2 Expressway & Transportation Research Institute, "Design guideline for integrated and pile bented abutment with mechanically stabilized earth wall brdige (IPM Bridge)", Korea Expressway Corporation, 2016.
3 Expressway & Transportation Research Institute, "Integral Bridge design Guidelines", Korea Expressway Corporation, 2009.
4 Korea Road and Transportation Association, Korean Highway Bridge Design Specifications, 2010.
5 Korea Expressway Corporation, Korean Roadway Design Guidelines, 2009.
6 S. Y. Back, J. G. Kim, B. S. Cho, "Evaluation on Bending Moment of Bridge Approach Slabs under Vehicle Load Considering Soil Settlement", Journal of the Korea Academia-Industrial cooperation Society, vol. 14, no. 11, pp. 5939-5946, 2013. DOI: http://dx.doi.org/10.5762/KAIS.2013.14.11.5939   DOI
7 J. L. Briaud, R. W. James, and S. B. Hoffman, "Settlement of Bridge Approaches, The Bump at the End of the Bridge", NCHRP Synthesis 234, Washington, D.C : Transportation Research Board, National Research Council, 1997.
8 J. H. Long, S. M. Olson, T. D. Stark, and E. A. Samara, "Differential Movement at the Embankment-Bridge Structure Interface in Illinois", Transportation Research Record no. 1633, Transportation Research Board, Washington, D. C., 1998. DOI: https://doi.org/10.3141/1633-07
9 J. L. Walkinshaw, "Survey of Bridge Movements in the Western United States", Transportation Research Record 678, Washington, D.C., 1978.
10 M. Bozozuk, "Bridge Foundation move", Transportation Research Record 678, Washington, D.C., 1978.
11 H. E. Wahls, "Design and Construction of Bridge Approaches", NCHRP Synthesis of Highway Practice 159, Transportation Research Board, Washington, D.C., 1990.
12 Expressway & Transportation Research Institute, "Evaluation and Improvement of Ride Discomfort at Bridge Approaches in Service", Korea Expressway Corporation, 2012.