Detail publikace

Reliability-based optimization of a prestressed concrete roof girder using a surrogate model and the double-loop approach

SLOWIK, O. LEHKÝ, D. NOVÁK, D.

Originální název

Reliability-based optimization of a prestressed concrete roof girder using a surrogate model and the double-loop approach

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The paper describes the reliability-based optimization of a TT-shaped precast roof girder produced in Austria. An extensive experimental programme was performed using laboratory specimens to gain information on the mechanical fracture parameters of the utilized concrete. Subsequently, destructive shear tests were performed on scaled-down and full-scale girders under laboratory conditions. The experiments helped in the development of an accurate numerical model of the girder. The developed model was consequently used for the advanced stochastic analysis of structural response, followed by reliability-based optimization, which was used to maximize the shear and bending capacities of the girder and minimize production cost under defined reliability constraints. The enormous computational requirements of the double-loop optimization approach were significantly reduced by the utilization of an artificial neural network-based surrogate model instead of the original nonlinear finite element model of the optimized structure.

Klíčová slova

artificial neural network, combinatorial optimization, double-loop reliability-based optimization, heuristic optimization, mechanical fracture parameters, prestressed concrete girder, shear failure, stochastic analysis

Autoři

SLOWIK, O.; LEHKÝ, D.; NOVÁK, D.

Vydáno

1. 8. 2021

Nakladatel

John Wiley and Sons Inc

ISSN

1464-4177

Periodikum

Structural Concrete

Ročník

22

Číslo

4

Stát

Spolková republika Německo

Strany od

2184

Strany do

2201

Strany počet

18

URL

https://onlinelibrary.wiley.com/doi/10.1002/suco.202000455

BibTex

@article{BUT172473,
  author="Ondřej {Slowik} and David {Lehký} and Drahomír {Novák}",
  title="Reliability-based optimization of a prestressed concrete roof girder using a surrogate model and the double-loop approach",
  journal="Structural Concrete",
  year="2021",
  volume="22",
  number="4",
  pages="2184--2201",
  doi="10.1002/suco.202000455",
  issn="1464-4177",
  url="https://onlinelibrary.wiley.com/doi/10.1002/suco.202000455"
}