Publication result detail

Sensitivity Analysis of Steel Plane Frames with Initial Imperfections

KALA, Z.

Original Title

Sensitivity Analysis of Steel Plane Frames with Initial Imperfections

English Title

Sensitivity Analysis of Steel Plane Frames with Initial Imperfections

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The article presents the sensitivity and statistical analyses of the load-carrying capacity of a steel portal frame. It elaborates a typical stability problem of a system comprising two single-storey columns loaded in compression. The elements of this system mutually influence each other, and this fact, in conjunction with the random imperfections, influences the load-carrying capacity variance. This mutual interaction is analysed using the Sobol sensitivity analysis. The Sobol sensitivity analysis is applied to identify the dominant input random imperfections and their higher order interaction effects on the load-carrying capacity. Majority of imperfections were considered according to the results of experimental research. Realizations of initial imperfections were simulated applying the Latin Hypercube Sampling method. The geometrical nonlinear solution providing numerical result per run was employed. The frame was meshed using beam elements. The columns of the plane frame are considered with two variants of boundary conditions. The dependence between mean and design load-carrying capacities and column non-dimensional slenderness is analysed.

English abstract

The article presents the sensitivity and statistical analyses of the load-carrying capacity of a steel portal frame. It elaborates a typical stability problem of a system comprising two single-storey columns loaded in compression. The elements of this system mutually influence each other, and this fact, in conjunction with the random imperfections, influences the load-carrying capacity variance. This mutual interaction is analysed using the Sobol sensitivity analysis. The Sobol sensitivity analysis is applied to identify the dominant input random imperfections and their higher order interaction effects on the load-carrying capacity. Majority of imperfections were considered according to the results of experimental research. Realizations of initial imperfections were simulated applying the Latin Hypercube Sampling method. The geometrical nonlinear solution providing numerical result per run was employed. The frame was meshed using beam elements. The columns of the plane frame are considered with two variants of boundary conditions. The dependence between mean and design load-carrying capacities and column non-dimensional slenderness is analysed.

Keywords

Structure; Portal frame; Sensitivity analysis; Steel; Imperfection; Stability; Buckling; Simulation; Variance

Key words in English

Structure; Portal frame; Sensitivity analysis; Steel; Imperfection; Stability; Buckling; Simulation; Variance

Authors

KALA, Z.

RIV year

2012

Released

15.08.2011

Location

GB

ISBN

0141-0296

Periodical

ENGINEERING STRUCTURES

Volume

33

Number

8

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2342

Pages to

2349

Pages count

8

BibTex

@article{BUT89774,
  author="Zdeněk {Kala}",
  title="Sensitivity Analysis of Steel Plane Frames with Initial Imperfections",
  journal="ENGINEERING STRUCTURES",
  year="2011",
  volume="33",
  number="8",
  pages="2342--2349",
  issn="0141-0296"
}