Comprehensive Study on Underslung Girder Bridge under Different Loading Conditions

Ieva Misiūnaitė, Algirdas Juozapaitis, Alfredas Laurinavičius

Abstract


The comprehensive study on the structural behaviour of underslung girder bridge is examined in this study through both numerical modelling and experimental 3D model tests. The structural design of steel bridges in many cases is governed by their ability to withstand asymmetric loading conditions. Three different symmetric and asymmet­ric load cases were investigated to capture the deformational and flexural response of the main girder. It was found that under distributed load the structural response of underslung girder bridge was similar to beam-column with interme­diate elastic supports. The numerical model was validated against experimental data with good agreement perceived, allowing an extensive parametric study to be performed. The observed influence of initial geometric imperfections and nonlinearities are discussed. It was found that symmetric load governs the ultimate limit state. However, the asymmet­ric one takes over in the case of serviceability. Finally, the study presented herein summarises experimental investiga­tions, numerical simulations and design proposals obtained through the recent few years research program, carried on to deepen the knowledge on the structural behaviour of underslung girder bridges.


Keywords:

beam-column behaviour; elastic support; experimental investigation; geometric imperfections; moment amplification; structural response; underslung girder bridge.

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References


De Araujo, R. R.; de Andrade, S. A. L.; da Silva Vellasco, P. C. G.; da Silva, J. G. S.; de Lima, L. R. O. 2008. Experimental and Numerical Assessment of Stayed Steel Columns, Journal of Constructional Steel Research 64(9): 1020–1029. https://doi.org/10.1016/j.jcsr.2008.01.011

Camara, A.; Nguyen, K.; Ruiz-Teran, A. M.; Stafford, P. J. 2014. Serviceability Limit State of Vibrations in Under-Deck Cable-Stayed Bridges Accounting for Vehicle-Structure Interaction, Engineering Structures 61(1): 61–72. https://doi.org/10.1016/j.engstruct.2013.12.030

Chan, S-L; Shu, G-P.; Lu, Z-T. 2002. Stability Analysis and Parametric Study of Pre-Stressed Stayed Columns, Engineering Structures 24(1): 115–124. https://doi.org/10.1016/S0141-0296(01)00026-8

Christodoulou, C.; Lark, R. J. 2007. Underslung Cable Structures – a Feasible Alternative? in Proc. of the 5th International Conference on the Current and Future Trends in Bridge Design, Construction and Maintenance. Ed. by Lark, R., 17–18 September, 2007, Beijing, China. CD-Rom, 351–359. https://doi.org/10.1680/bdcam.35935.0038

Kasuga, A. 2011. Development of a New Bridge Construction Method Using Suspension Structures, Structural Concrete 12(2): 65–75. https://doi.org/10.1002/suco.201000002

Madrazo-Aguirre, F.; Ruiz-Teran, A. M.; Wadee, M. A. 2015a. Design Criteria of Under-Deck Cable-Stayed Composite Bridges for Short and Medium Spans, Structural Engineering International 25(2): 125–133. https://doi.org/10.2749/101686615X14210663188574

Madrazo-Aguirre, F.; Ruiz-Teran, A. M.; Wadee, M. A. 2015b. Dynamic Behaviour of Steel-Concrete Composite Under-Deck Cable-Stayed Bridges under the Action of Moving Loads, Engineering Structures 103(15 November 2015): 260–274. https://doi.org/10.1016/j.engstruct.2015.09.014

Madrazo-Aguirre, F.; Wadee, M. A.; Ruiz-Teran, A. M. 2015c. Non-Linear Stability of Under-Deck Cable-Stayed Bridge Decks, International Journal of Non-Linear Mechanics 77(December 2015): 28–40. https://doi.org/10.1016/j.ijnonlinmec.2015.07.001

Meng, X.; Zhang, C. 2014. Extradosed and Intradosed Cable-Stayed Bridges with Continuous Cables: Conceptual Consideration, Journal of Bridge Engineering 19(1): 5–14. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000477

Misiunaite, I.; Juozapaitis, A. 2014. Advances in Steel Under-Deck Cable-Stayed Bridges, BTU Stahlbau-Symposium, Cottbus, Germany, 2014, Heft 8: 25–32.

Misiunaite, I.; Daniunas, A.; Juozapaitis, A. 2012. Unconventional Double-Level Structural System for Under-Deck Cable-Stayed Bridges, Journal of Civil Engineering and Management 18(3): 436–443. https://doi.org/10.3846/13923730.2012.700106

Muttoni, A. 2014. Some Innovative Prestressed Concrete Structures in Switzerland, Keynote lecture at the 23rd Symposium on Development in Prestressed Concrete. Japan Prestressed Concrete Institute, Morioka, Japan, 2014, 12 p.

Ruiz-Teran, A. M.; Aparicio, A. C. 2007a. Two New Types of Bridges: Under-Deck Cable-Stayed Bridges and Combined Cable-Stayed Bridges. The State of the Art, Canadian Journal of Civil Engineering 34(8): 1003–1015. https://doi.org/10.1139/l07-017

Ruiz-Teran, A. M.; Aparicio, A. C. 2007b. Parameters Governing the Response of Under-Deck Cable-Stayed Bridges, Canadian Journal of Civil Engineering 34(8): 1016–1024. https://doi.org/10.1139/l07-016

Saito, D.; Wadee, M. A. 2009. Buckling Behaviour of Prestressed Steel Stayed Columns with Imperfections and Stress Limitation, Engineering Structures 31(1): 1–15. https://doi.org/10.1016/j.engstruct.2008.07.006

Saito, D.; Wadee, M. A. 2008. Post-Buckling Behaviour of Prestressed Steel Stayed Columns, Engineering Structures 30(5): 1224–1239. https://doi.org/10.1016/j.engstruct.2007.07.012

Saitoh, M.; Okada, A. 1999. The Role of String in Hybrid String Structures, Engineering Structures 21(8): 756–769. https://doi.org/10.1016/S0141-0296(98)00029-7

Serra, M.; Shahbazian, A.; da Silva, L. S.; Rabelo, C.; da Silva Vellasco, P. C. G. 2015. A Full Scale Experimental Study of Pre The Baltic Journal of Road and Bridge Engineering, 2017, 12(1): 21–29 29 stressed Stayed Columns, Engineering Structures 100: 490–510. https://doi.org/10.1016/j.engstruct.2015.06.033

Wu, M. 2008. Analytical Method for the Lateral Buckling of the Struts in Beam String Structures, Engineering Structures 30(9): 2301–2310. https://doi.org/10.1016/j.engstruct.2008.01.008

Wu, M.; Sasaki, M. 2007. Structural Behaviors of an Arch Stiffened by Cables, Engineering Structures 29(4): 529–541. https://doi.org/10.1016/j.engstruct.2006.05.018

Xue, W.; Liu, Sh. 2009. Design Optimization and Experimental Study on Beam String Structures, Journal of Constructional Steel Research 65(1): 70–80. https://doi.org/10.1016/j.jcsr.2008.08.009




DOI: 10.3846/bjrbe.2017.03

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