Browse > Article
http://dx.doi.org/10.12989/scs.2022.42.1.139

After-fracture behaviour of steel-concrete composite twin I-girder bridges: An experimental study  

Lin, Weiwei (Department of Civil Engineering, Aalto University)
Publication Information
Steel and Composite Structures / v.42, no.1, 2022 , pp. 139-149 More about this Journal
Abstract
To simplify the design and reduce the construction cost of traditional multi-girder structural systems, twin I-girder structures are widely used in many countries in recent years. Due to the concern on post-fracture redundancy, however, twin girder bridges are currently classified as fracture critical structures in AASHTO specifications for highway bridges. To investigate the after-fracture behavior of such structures, a composite steel and concrete twin girder specimen was built and an artificial fracture through the web and the bottom flange was created on one main girder. The static loading test was performed to investigate its mechanical performance after a severe fracture occurred on the main girder. Applied load and vertical displacement curves, and the applied load versus strain relationships at key sections were measured. To investigate the load distribution and transfer capacities between two steel girders, the normal strain development on crossbeams was also measured during the loading test. In addition, both shear and normal strains of studs were also measured in the loading test to explore the behavior of shear connectors in such bridges. The functions and structural performance of structural members and possible load transfer paths after main girder fractures in such bridges were also discussed. The test results indicate in this study that a typical twin I-girder can resist a general fracture on one of its two main girders. The presented results can provide references for post-fracture performance and optimization for the design of twin I-girder bridges and similar structures.
Keywords
collapse; fracture; loading test; redundancy; two girder;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Eom, G., Kim, S.J., Lee, T. and Kim, J.J. (2017), "Design optimization and structural performance evaluation of plate girder bridge constructed using a turn-over process", Materials. 10(3), 283. https://doi.org/10.3390/ma10030283.   DOI
2 Abedin, M. and Mehrabi, A.B. (2020), "Effect of cross-frames on load distribution of steel bridges with fractured girder", Infrastructures. 5(4), 32. https://doi.org/10.3390/infrastructures5040032.   DOI
3 American Association of State Highway and Transportation Officials (AASHTO) (2017). Standard Specifications for Highway Bridges. Washington, D.C.
4 Daniels, J.H., Kim, W. and Wilson, J.L. (1988), Guidelines for Redundancy Design and Rating of Two-Girder Steel Bridges, Final Report.
5 JRA (Japan Road Association). (2012), Specifications for highway bridges. Part I, Common, Tokyo.
6 JSCE (Japan Society of Civil Engineers). (2007). Standard Specifications for Steel and Composite Structures, Tokyo.
7 Kim, J., Kee, S.H., Youn, H., and Kim, D.Y. (2018), "Parameters influencing redundancy of twin steel box-girder bridges", Steel Compos. Struct., 29(4), 437-456. https://doi.org/10.12989/scs.2018.29.4.437.   DOI
8 Lin, W., Butler, L.J., Elshafie, M.Z.E.B. and Middleton, C.R. (2019), "Performance assessment of a newly constructed skewed half-through railway bridge through integrated sensing", J. Bridge Eng., ASCE. 21(1), 04018107. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001334.   DOI
9 Lin, W., Yoda, T., Taniguchi, N., Kasano, H. and He, J. (2014), "Mechanical performance of steel-concrete composite beams subjected to a hogging moment", J. Struct. Eng., ASCE. 140(1), 04013031. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000800.   DOI
10 Nagai, M. (2006), S"teel bridges in Japan-rationalized design methods in Japan, 15", Japan Soc. Steel Construct., Tokyo.
11 Park, Y., Joe, W., Park, J., Hwang, M. and Choi, B.H. (2012), "An experimental study on after-fracture redundancy of continuous span two-girder bridges", Int. J. Steel Struct., 12(1), 1-13. https://doi.org/10.1007/s13296-012-1001-6.   DOI
12 Lin, W., Lam, H. and Yoda. (2020), "Experimental study on steel-concrete composite twin I-girder bridges", J. Bridge Eng., ASCE. 25(1), 04019129. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001509.   DOI
13 Lin, W., Yoda, T., Kumagai, Y. and Saigyo, T. (2013), "Numerical study on post-fracture redundancy of the two-girder steel-concrete composite highway bridges", Int. J. Steel Struct., 13(4), 671-681. https://doi.org/10.1007/s13296-013-4008-8.   DOI
14 Lin, W., Yoda, T., Taniguchi, N., Lam, H. and Nakabayashi, K. (2016), "Post-fracture redundancy evaluation of a twin boxgirder shinkansen bridge in Japan", Proceedings of IABSE Conference Guangzhou 2016, 675-682.
15 Mensah, S.A. and Durham, S.A. (2014), "Live load distribution factors in two-girder bridge systems using precast trapezoidal u-girders", J. Struct. Eng., ASCE. 19(2), 281-288. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000520.   DOI
16 Odrobinak, J., Vican, J. and Bujnak, J. (2013), "Verification of composite steel-concrete bridge behavior", Procedia Eng., 65, 440-446. https://doi.org/10.1016/j.proeng.2013.09.069.   DOI
17 Kim, J. and Williamson, E.B. (2015), "Finite-element modeling of twin steel box-girder bridges for redundancy evaluation", J. Bridge Eng., ASCE. 20(10), 04014106. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000706.   DOI
18 Samaras, V.A., Sutton, J.P., Williamson, E.B. and Frank, K.H. (2012), "Simplified method for evaluating the redundancy of twin steel box-girder bridges", J. Bridge Eng., ASCE, 17(3), 470-480. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000280.   DOI
19 Santos, C.A.N., El Damatty, A.A., Pfeil, M.S. and Battista, R.C. (2019), "Structural optimization of two-girder composite cable-stayed bridges under dead and live loads", Canadian J. Civil Eng., 47(8). https://doi.org/10.1139/cjce-2019-0140.   DOI