Detail publikace

Shape optimization of concrete buried arches

HOUŠŤ, V. ELIÁŠ, J. MIČA, L.

Originální název

Shape optimization of concrete buried arches

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Shape optimization in connection with numerical modelling is used to reduce bending and associated flexural stresses in buried concrete arches. Modelling of the arch is carried out via a nonlinear finite element model that accounts for soil constitutive relations, soil-structure interactions, sequential construction stages and soil compaction. Centre line of the arch is parameterized by Bézier curve with three degrees of freedom that are subjected to optimization by genetic and Levenberg-Marquardt algorithm. The paper presents a parametric study which aims to determine the optimal shapes for buried arches of vaious span/rise ratios, backfill depths and foundation soil types. In the second part of the paper it shows a theoretical reduction in tensile stresses obtained by shape optimization of concrete arch culvert witch a 9.4 m span tested at the University of Massachusetts at Amherst.

Klíčová slova

Soil-structure interactions, concrete arch, cut-and-cover structure, shape optimization, genetic algorithm, bézier curve

Autoři

HOUŠŤ, V.; ELIÁŠ, J.; MIČA, L.

Rok RIV

2013

Vydáno

11. 1. 2013

ISSN

0141-0296

Periodikum

ENGINEERING STRUCTURES

Ročník

48

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

716

Strany do

726

Strany počet

11

BibTex

@article{BUT102238,
  author="Vladimír {Houšť} and Jan {Eliáš} and Lumír {Miča}",
  title="Shape optimization of concrete buried arches",
  journal="ENGINEERING STRUCTURES",
  year="2013",
  volume="48",
  number="1",
  pages="716--726",
  doi="10.1016/j.engstruct.2012.11.037",
  issn="0141-0296"
}