Structural Engineering and Mechanics

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Optimisation of bridge deck positioning by the evolutionary procedure

  • Guan, Hong (School of Engineering, Griffith University Gold Coast Campus) ;
  • Steven, G.P. (Department of Aeronautical Engineering, University of Sydney) ;
  • Querin, O.M. (Department of Aeronautical Engineering, University of Sydney) ;
  • Xie, Y.M. (Faculty of Engineering Science, Victoria University of Technology)
  • Published : 1999.06.25
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Abstract

This paper presents some simple thinking on an age-old question that given a bridge of a certain span and loading, from the point of view of the structural efficiency, where should the bridge deck be positioned? Generally, this decision is made for other reasons than structural efficiency such as aesthetics and the analyst is often presented with a fait accompli. Using the recently invented Evolutional Structural Optimisation (ESO) method, it is possible to demonstrate that having the deck at different vertical locations can lead to a very different mass and shape for each structural form resembling cable-stayed and cable-truss bridges. By monitoring a performance index which is the function of stresses and volume of discretised finite elements, the best optimised structure can be easily determined and the bridge deck positioning problem can be efficiently solved without resorting to any complex analysis procedures.

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References

  1. Bendsoe, M.P. and Kikuchi, N. (1988), "Generating optimal topologies in structural design using a homogenization method" , Computer Methods in Applied Mechanics and Engineering, 71, 197-224. https://doi.org/10.1016/0045-7825(88)90086-2
  2. Goldberg, D.E. (1989), Genetic Algorithms in Search, Optimization and Machine Learning, Addison-Wesley.
  3. Mattheck, C. and Burkhardt, S. (1990), "A new method of structural shape optimisation based on biological growth" , International Journal of Fatigue, 12(3), 185-190. https://doi.org/10.1016/0142-1123(90)90094-U
  4. Querin, O.M., Steven, G.P. and Xie, Y.M. (1996a), "Development of a performance indicator for structural topology optimization" , Journal of Structural Optimization. (Accepted for publication)
  5. Querin, O.M., Steven, G.P. and Xie, Y.M. (1996b), EVOLVE User Guide, Department of Aeronautical Engineering, University of Sydney, Australia.
  6. Rozvany, G.I.N. (1989), Structural Design via Optimality Criteria, Kluwar Academic Publishers, Dordrecht.
  7. Vanderplaats, G.N. (1984), Numerical Optimization Techniques for Engineering Design: with Application, McGraw-Hill, New York.
  8. Xie, Y.M. and Steven, G.P. (1993), ''A simple evolutionary procedure for structural optimization", Computers and Structures, 49, 885-896. https://doi.org/10.1016/0045-7949(93)90035-C
  9. Xie, Y.M. and Steven, G.P. (1994), "Optimal design of multiple load case structures using an evolutionary procedure" , Engineering Computations, 11, 295-302. https://doi.org/10.1108/02644409410799290
  10. Xie, Y.M. and Steven, G.P. (1997), Evolutionary Structural Optimisation, Springer-Verlag, Berlin.

Cited by

  1. Bridge topology optimisation with stress, displacement and frequency constraints vol.81, pp.3, 2003, https://doi.org/10.1016/S0045-7949(02)00440-6
  2. Smoothing evolutionary structural optimization for structures with displacement or natural frequency constraints vol.163, pp.None, 1999, https://doi.org/10.1016/j.engstruct.2018.02.032
  3. Form Finding and Aesthetic Design for Pylons of Cable-supported Bridges vol.31, pp.4, 1999, https://doi.org/10.1080/10168664.2020.1870056