Optimal Steel Section Length of the Composite Rigid-Frame Bridge
Publication: Practice Periodical on Structural Design and Construction
Volume 23, Issue 3
Abstract
The composite rigid-frame bridge replaces a specific concrete section of the midspan girder of a concrete rigid-frame bridge with a steel section. Although the added steel section improves the bending moment distribution of the rigid-frame bridge, it increases the stress level and structural deformation in a few specific points along the bridge girder. Therefore, the determination of the steel section length needs to consider the comprehensive mechanical effects caused by the replacement of the concrete section with the steel materials. This article presents the results of a study on the influence of steel section lengths on the structural mechanical behavior of rigid-frame bridges, including bending moment, bending stress, and structural deformation. Based on the results of the sensitivity analysis, this study optimizes the steel section length by using the bending strain energy as the objective function. Taking a composite rigid-frame bridge with a span combination of 84 + 200 + 84 m as an example, the structural optimization yields an optimal steel section length ratio of 0.55 (110 m), with the least bending strain energy and with acceptable magnitudes of bending moment, bending stress, and structural deformation. The outcome of this study provides guidance regarding the steel section length for the structural design of composite rigid-frame bridges.
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References
AASHTO. (1998). Bridge design specifications, 2nd Ed., Washington, DC.
Adeli, H., and Zhang, J. (1995). “Fully nonlinear analysis of composite girder cable-stayed bridges.” Comput. Struct., 54(2), 267–277.
Baldomir, A., and Hernández, S. (2009). '“Cable optimization of a long span cable stayed bridge in La Coruña (Spain).” Computer aided optimum design in engineering XI, Wessex Institute of Technology, Ashurst, U.K., 107–119.
Brockenbrough, R. L., and Merritt, F. S. (1999). Structural steel designer's handbook, McGraw-Hill New York.
Chen, D. W., Au, F. T. K., Tham, L. G., and Lee, P. K. K. (2000). “Determination of initial cable forces in prestressed concrete cable-stayed bridges for given design deck profiles using the force equilibrium method.” Comput. Struct., 74(1), 1–9.
Everitt, B. (1998). Cambridge dictionary of statistics, Cambridge Univ., Cambridge, U.K.
Feng, P.-C., Wu, Y.-Y., Yang, Y.-Q., and Li, C.-Y. (2006). “Analysis of accident of bursting crack in bottom slab of a continuous rigid-frame bridge.” World Bridges, 1, 66–69.
Furukawa, K., Hiroyuki, S., Kohichi, I., and Yamada, Y. (1989). “Optimization of cable prestresses of cable stayed bridges based on minimum strain energy criterion.” Proc., Structures Congress ’89, ASCE, Reston, VA.
Furukawa, K., Sugimoto, H., Egusa, T., Inoue, K., and Yamada, Y. (1987). “Studies on optimization of cable prestressing for cable-stayed bridges.” Proc., Int. Conf. on Cable-Stayed Bridges, Asian Institute of Technology, Khlong Nueng, Thailand, 723–734.
Heins, C. P. (1978). “Box girder bridge design—State of the art.” Eng. J., 15(4), 126–142.
Kaveh, A., Hassani, B., Shojaee, S., and Tavakkoli, S. M. (2008). “Structural topology optimization using ant colony methodology.” Eng. Struct., 30(9), 2559–2565.
Kwak, H.-G., and Seo, Y.-J. (2000). “Long-term behavior of composite girder bridges.” Comput. Struct., 74(5), 583–599.
Lee, T.-Y., Kim, Y.-H., and Kang, S.-W. (2008). “Optimization of tensioning strategy for asymmetric cable-stayed bridge and its effect on construction process.” Struct. Multidiscip. Optim., 35(6), 623–629.
Li-zhong, W. (2006). “Design of the rotational structure of highway T-shape rigid frame bridge constructed with the method of slewing.” J. Railway Eng. Soc., 9, 41–43.
Lute, V., Upadhyay, A., and Singh, K. K. (2009). “Computationally efficient analysis of cable-stayed bridge for GA-based optimization.” Eng. Appl. Artif. Intell., 22(4–5), 750–758.
Martí, J. V., Fernando, G.-V., Yepes, V., and Alcalá, J. (2013). “Design of prestressed concrete precast road bridges with hybrid simulated annealing.” Eng. Struct., 48, 342–352.
Martins, A. M. B., Simões, L. M. C., and Negrão, J. H. J. O. (2015). “Optimization of cable forces on concrete cable-stayed bridges including geometrical nonlinearities.” Comput. Struct., 155, 18–27.
Mei, G. (1999). “Stability analysis of the continuous rigid frame bridge with high pier and large span.” J. Xi’an Highway Univ., (3), 7.
midas Civil [Computer software]. MIDAS Information Technology, Gyeonggi-do, Korea.
Negrão, J. H. J. O., and Simões, L. M. C. (1997). “Optimization of cable-stayed bridges with three-dimensional modelling.” Comput. Struct., 64(1–4), 741–758.
Shirley-Smith, H., and Billington, D. P. (2017). “Live load and dead load.” Encyclopedia Britannica, ⟨https://www.britannica.com/technology/bridge-engineering/Live-load-and-dead-load〉 (Oct. 20, 2017).
Sung, Y.-C., Chang, D.-W., and Teo, E.-H. (2006). “Optimum post-tensioning cable forces of Mau-Lo Hsi cable-stayed bridge.” Eng. Struct., 28(10), 1407–1417.
Xiang, Y.-Q., Yao, Y.-D., Hu, F.-Q., Jing, L.-J., and Zhu, W.-G. (2004). “Study of static and dynamic behavior of T-shape rigid frame bridge reinforced by prestressed external tendon.” China J. Highway Transp., 1, 9.
Zhouhong, Z., Canglin, L., Youqin, L., and Weixin, R. (2004). “Analysis of dynamic characteristics of a large-span prestressed concrete continuous rigid frame bridge.” Earthquake Eng. Eng. Vibr., 24, 98–104.
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Published In
Practice Periodical on Structural Design and Construction
Volume 23 • Issue 3 • August 2018
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Sep 5, 2017
Accepted: Dec 20, 2017
Published online: Apr 11, 2018
Published in print: Aug 1, 2018
Discussion open until: Sep 11, 2018
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