Analysis of the pre-dimensioning of optimum prestressed lightened prestressed bridge decks and its incidence on the structural design

  1. Yepes-Bellver, Lorena 1
  2. Martínez-Pagán, Pedro 2
  3. Alcalá, Julián 1
  4. Yepes, Víctor 1
  1. 1 Universidad Politécnica de Valencia
    info

    Universidad Politécnica de Valencia

    Valencia, España

    ROR https://ror.org/01460j859

  2. 2 Universidad Politécnica de Cartagena
    info

    Universidad Politécnica de Cartagena

    Cartagena, España

    ROR https://ror.org/02k5kx966

Aktak:
28th International Congress on Project Management and Engineering

Argitaletxea: Universidad de Jaén

Argitalpen urtea: 2024

Mota: Biltzar ekarpena

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Laburpena

Structural design is usually based on the experience of the designer. Sometimes this experience is embodied in pre-dimensioning formulas that, although they offer good results, sometimes have inefficiencies when compared with current optimization techniques that take into account economic and environmental dimensions. This paper compares experience-based pre-sizing rules with optimization techniques. It is applied to the case of prestressed lightened slab bridge deck design. The result of the research highlights the importance of applying methods based on heuristic optimization and metamodeling to update the experience of designers and to propose new pre-dimensioning formulas more adjusted to economic and environmental optimization. In addition, the work provides pre-dimensioning nomograms, with the minimum amount of data possible, which may be useful to the designer in his preliminary designs.