Publication result detail

Strengthening under Load: Numerical Study of Flexural Buckling of Columns

VILD, M.; BAJER, M.

Original Title

Strengthening under Load: Numerical Study of Flexural Buckling of Columns

English Title

Strengthening under Load: Numerical Study of Flexural Buckling of Columns

Type

WoS Article

Original Abstract

The paper refers to the strengthening of doubly symmetric columns under load by welded plates. A validated numerical study containing more than 500 models was performed to question the currently used design procedures. These procedures are not unified but vary greatly in different countries. The overly conservative design approach used in the Czech Republic contrasts with the approach completely neglecting the effect of preload commonly used in the USA. The effect of various parameters on the flexural buckling resistance of columns strengthened under load was investigated. The selected parameters were the thickness of the strengthening flange, the column length, the initial bow imperfection, the preload magnitude and the direction of the axis which is pinned while the other axis is fixed. Several conclusions were reached from provided results and a simple analytical method is proposed. The load under which the column is strengthened weakens the column but only slightly.

English abstract

The paper refers to the strengthening of doubly symmetric columns under load by welded plates. A validated numerical study containing more than 500 models was performed to question the currently used design procedures. These procedures are not unified but vary greatly in different countries. The overly conservative design approach used in the Czech Republic contrasts with the approach completely neglecting the effect of preload commonly used in the USA. The effect of various parameters on the flexural buckling resistance of columns strengthened under load was investigated. The selected parameters were the thickness of the strengthening flange, the column length, the initial bow imperfection, the preload magnitude and the direction of the axis which is pinned while the other axis is fixed. Several conclusions were reached from provided results and a simple analytical method is proposed. The load under which the column is strengthened weakens the column but only slightly.

Keywords

Column; experiment; finite element analysis; parametric study; steel; strengthening under load

Key words in English

Column; experiment; finite element analysis; parametric study; steel; strengthening under load

Authors

VILD, M.; BAJER, M.

RIV year

2018

Released

03.06.2017

Publisher

Elsevier

Location

Nizozemsko

ISBN

1877-7058

Periodical

Procedia Engineering

Volume

190

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

118

Pages to

125

Pages count

8

URL

http://dx.doi.org/10.1016/j.proeng.2017.05.316

Full text in the Digital Library

http://hdl.handle.net/11012/69334

BibTex

@article{BUT136600,
  author="Martin {Vild} and Miroslav {Bajer}",
  title="Strengthening under Load: Numerical Study of Flexural Buckling of Columns",
  journal="Procedia Engineering",
  year="2017",
  volume="190",
  number="1",
  pages="118--125",
  doi="10.1016/j.proeng.2017.05.316",
  url="http://dx.doi.org/10.1016/j.proeng.2017.05.316"
}

Documents

1-s2.0-S1877705817324566-main