Simultaneous Cross Section and Launching Nose Optimization of Incrementally Launched Bridges
Publication: Journal of Bridge Engineering
Volume 19, Issue 3
Abstract
The conventional design process of the launching nose of an incrementally launched bridge is usually based on parametric models with great limitations and the use of a trial and error technique to improve the design. Facing the disadvantages of traditional approaches, the use of numerical optimization techniques permits the development of objective, rigorous, and complete formulations. This work solves the design optimization problem of an incrementally launched prestressed concrete bridge during construction, searching simultaneously for the optimum cross section dimensions and the prestressing forces of the concrete deck, as well as the most adequate characteristics of the launching nose for the best economic solution. A computer code that allows the generation of a deck was developed, under real design constraints similar to those a bridge designer may encounter in practice. This code is very useful for preliminary phases of a project. The results obtained with this innovative formulation show the benefit of considering numerical optimization tools.
Get full access to this article
View all available purchase options and get full access to this article.
References
AASHTO. (2007). Bridge construction practices using incremental launching, Highway Subcommittee on Bridge and Structures, Washington, DC.
Bouchon, E., et al. (1999). Guide des ponts poussés, Association français de genie civil, Presses de l’ecole nationale des ponts et chausées, Paris (in French).
Choi, H. Y., Suh, S. K., Oh, M. S., Oh, S. H., and Kong, K. B. (2009). “Techniques of optimizing the launching nose in incremental launching method.” Proc., 5th Int. Symp. on Steel Structures, Korean Society of Steel Construction, Seoul, Korea, 954–961.
DOT. (2001). Design optimization tools: User manual, version 5.0, Vanderplaats Research & Development, Colorado Springs, CO.
EHE. (2008). Instrucción de Hormigón Estructural, Comisión permanente del hormigón, Ministerio de Fomento, Madrid, Spain (in Spanish).
Eurocode 3. (2008). “Eurocódigo 3. Proyecto de Estructuras de Acero.” AENOR, Madrid, Spain (in Spanish).
Fontán, A. N. (2009). “Optimización de la sección transversal y del pico de lanzamiento de puentes lanzados de hormigón pretensado.” Ph.D. thesis, Universidade da Coruña, A Coruña, Spain (in Spanish).
Fontán, A. N., Díaz, J. M., Baldomir, A., and Hernández, S. (2011). “Improved optimization formulations for launching nose of incrementally launched prestressed concrete bridges.” J. Bridge Eng., 461–470.
Göhler, B., and Pearson, B. (2000). Incrementally launched bridges: Design and construction, Ernst & Sohn, Berlin.
Hernández, S. (1990). Métodos de Diseño Óptimo de Estructuras, Colegio de Ingenieros de Caminos, Canales and Puertos, Madrid, Spain (in Spanish).
Hernández, S., and Fontán, A.N. (2002). Practical applications of design optimization. WIT Press, Southampton, U.K.
Iglesias, C. (1992). “Algunas ideas sobre el predimensionamiento de puentes empujados: Empuje con nariz metálica.” Hormig. Acero., 182, 111–128 (in Spanish).
Manterola, J. (2006). Puentes : Apuntes para su diseño, cálculo y construcción. Colegio de Ingenieros de Caminos, Canales y Puertos, Madrid, Spain (in Spanish).
Rosignoli, M. (1997). “The evolution of a technique: Incremental bridge launching.” Concr. Int., 19(2), 36–40.
Rosignoli, M. (1998). “Nose-deck interaction in launched prestressed concrete bridges.” J. Bridge Eng., 21–27.
Rosignoli, M. (1999). “Prestressing schemes for incrementally launched bridges.” J. Bridge Eng., 107–115.
Rosignoli, M. (2000). “Thrust and guide devices for launched bridges.” J. Bridge Eng., 75–83.
Rosignoli, M. (2002). Bridge launching, Thomas Telford, London.
Sasmal, S., and Ramanjaneyulu, K. (2006). “Transfer matrix method for construction phase analysis of incrementally launched prestressed concrete bridges.” Eng. Struct., 28(13), 1897–1910.
Sasmal, S., Ramanjaneyulu, K., Srinivas, V., and Gopalakrishnan, S. (2004). “Simplified computational methodology for analysis and studies on behaviour of incrementally launched continuous bridges.” Struct. Eng. Mech., 17(2), 245–266.
Vanderplaats, G. N. (2001). Numerical optimization techniques for engineering design: With applications, 3nd Ed., Vanderplaats Research & Development, Colorado Springs, CO.
Wang, W., Zheng, H., and Zeng, X. (2010). “Optimum Design of Launching Nose during Incremental Launching Construction of Same-Span Continuous Bridge.” World Acad. Sci. Eng. Tech., 72(48), 861–866.
Information & Authors
Information
Published In
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Dec 3, 2012
Accepted: Jun 13, 2013
Published online: Jun 15, 2013
Published in print: Mar 1, 2014
Discussion open until: Apr 27, 2014
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.