Publication detail

Shape optimization of concrete buried arches

HOUŠŤ, V. ELIÁŠ, J. MIČA, L.

Original Title

Shape optimization of concrete buried arches

Type

journal article - other

Language

English

Original Abstract

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.

Keywords

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

Authors

HOUŠŤ, V.; ELIÁŠ, J.; MIČA, L.

RIV year

2013

Released

11. 1. 2013

ISBN

0141-0296

Periodical

ENGINEERING STRUCTURES

Year of study

48

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

716

Pages to

726

Pages count

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"
}