Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures

Alia O.M. Ahmed, Nigel D.P. Barltrop

Research output: Contribution to journalArticle

10 Downloads (Pure)

Abstract

Lightweight (thin-walled or cold-formed) steel portal frame structure could be a popular and effective alternative to the traditional hot rolled structure and, with care to avoid buckling, could be used in earthquake areas owing to its economy and ease of fabrication and transportation, but no recommendations for seismic design of these structures is provided in the design codes. Accordingly, there is need for a lightweight design that is suitable for earthquake areas, which could be transported using lighter vehicles and erected quickly using smaller plant than is required for conventional hot rolled sections following an earthquake. The present paper shows some stages in the development of an earthquake-resistant frame, designed for by combining numerical finite element investigations with analytical check calculations based on EN 1993-1-3 for cold-formed steel members and EN 1993-1-1 for design of steel structures to estimate the loads on the frame structure within the use of EN 1998-1seismic design requirements. Although the initial buckling modes have been avoided, the frame still needs further modification to improve its ductility. It is planned to use this work to assist with the development of performance-based design recommendations for future structures that cover both thin-walled steel and cold-formed steel portal frame structures.

Original languageEnglish
Pages (from-to)899-909
Number of pages11
JournalInternational Journal of Computational Methods and Experimental Measurements
Volume6
Issue number5
Early online date4 Nov 2017
DOIs
Publication statusPublished - 31 Jan 2018

Fingerprint

Frame Structure
Steel
Earthquakes
Earthquake
Numerical Simulation
Computer simulation
Buckling
Recommendations
Seismic design
Steel structures
Ductility
Design
Fabrication
Cover
Finite Element
Alternatives
Requirements
Estimate

Keywords

  • cold-formed steel
  • portal frame
  • seismic design
  • steel
  • thin-walled structures

Cite this

Ahmed, A. O. M., & Barltrop, N. D. P. (2018). Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures. International Journal of Computational Methods and Experimental Measurements, 6(5), 899-909. https://doi.org/10.2495/CMEM-V6-N5-899-909
Ahmed, Alia O.M. ; Barltrop, Nigel D.P. / Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures. In: International Journal of Computational Methods and Experimental Measurements. 2018 ; Vol. 6, No. 5. pp. 899-909.
@article{31616f0d774646ce989dd0c215f93220,
title = "Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures",
abstract = "Lightweight (thin-walled or cold-formed) steel portal frame structure could be a popular and effective alternative to the traditional hot rolled structure and, with care to avoid buckling, could be used in earthquake areas owing to its economy and ease of fabrication and transportation, but no recommendations for seismic design of these structures is provided in the design codes. Accordingly, there is need for a lightweight design that is suitable for earthquake areas, which could be transported using lighter vehicles and erected quickly using smaller plant than is required for conventional hot rolled sections following an earthquake. The present paper shows some stages in the development of an earthquake-resistant frame, designed for by combining numerical finite element investigations with analytical check calculations based on EN 1993-1-3 for cold-formed steel members and EN 1993-1-1 for design of steel structures to estimate the loads on the frame structure within the use of EN 1998-1seismic design requirements. Although the initial buckling modes have been avoided, the frame still needs further modification to improve its ductility. It is planned to use this work to assist with the development of performance-based design recommendations for future structures that cover both thin-walled steel and cold-formed steel portal frame structures.",
keywords = "cold-formed steel, portal frame, seismic design, steel, thin-walled structures",
author = "Ahmed, {Alia O.M.} and Barltrop, {Nigel D.P.}",
year = "2018",
month = "1",
day = "31",
doi = "10.2495/CMEM-V6-N5-899-909",
language = "English",
volume = "6",
pages = "899--909",
number = "5",

}

Ahmed, AOM & Barltrop, NDP 2018, 'Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures', International Journal of Computational Methods and Experimental Measurements, vol. 6, no. 5, pp. 899-909. https://doi.org/10.2495/CMEM-V6-N5-899-909

Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures. / Ahmed, Alia O.M.; Barltrop, Nigel D.P.

In: International Journal of Computational Methods and Experimental Measurements, Vol. 6, No. 5, 31.01.2018, p. 899-909.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures

AU - Ahmed, Alia O.M.

AU - Barltrop, Nigel D.P.

PY - 2018/1/31

Y1 - 2018/1/31

N2 - Lightweight (thin-walled or cold-formed) steel portal frame structure could be a popular and effective alternative to the traditional hot rolled structure and, with care to avoid buckling, could be used in earthquake areas owing to its economy and ease of fabrication and transportation, but no recommendations for seismic design of these structures is provided in the design codes. Accordingly, there is need for a lightweight design that is suitable for earthquake areas, which could be transported using lighter vehicles and erected quickly using smaller plant than is required for conventional hot rolled sections following an earthquake. The present paper shows some stages in the development of an earthquake-resistant frame, designed for by combining numerical finite element investigations with analytical check calculations based on EN 1993-1-3 for cold-formed steel members and EN 1993-1-1 for design of steel structures to estimate the loads on the frame structure within the use of EN 1998-1seismic design requirements. Although the initial buckling modes have been avoided, the frame still needs further modification to improve its ductility. It is planned to use this work to assist with the development of performance-based design recommendations for future structures that cover both thin-walled steel and cold-formed steel portal frame structures.

AB - Lightweight (thin-walled or cold-formed) steel portal frame structure could be a popular and effective alternative to the traditional hot rolled structure and, with care to avoid buckling, could be used in earthquake areas owing to its economy and ease of fabrication and transportation, but no recommendations for seismic design of these structures is provided in the design codes. Accordingly, there is need for a lightweight design that is suitable for earthquake areas, which could be transported using lighter vehicles and erected quickly using smaller plant than is required for conventional hot rolled sections following an earthquake. The present paper shows some stages in the development of an earthquake-resistant frame, designed for by combining numerical finite element investigations with analytical check calculations based on EN 1993-1-3 for cold-formed steel members and EN 1993-1-1 for design of steel structures to estimate the loads on the frame structure within the use of EN 1998-1seismic design requirements. Although the initial buckling modes have been avoided, the frame still needs further modification to improve its ductility. It is planned to use this work to assist with the development of performance-based design recommendations for future structures that cover both thin-walled steel and cold-formed steel portal frame structures.

KW - cold-formed steel

KW - portal frame

KW - seismic design

KW - steel

KW - thin-walled structures

UR - http://www.scopus.com/inward/record.url?scp=85064196289&partnerID=8YFLogxK

U2 - 10.2495/CMEM-V6-N5-899-909

DO - 10.2495/CMEM-V6-N5-899-909

M3 - Article

VL - 6

SP - 899

EP - 909

IS - 5

ER -

Ahmed AOM, Barltrop NDP. Seismic analysis and design assisted by numerical simulation of slender steel portal frame structures. International Journal of Computational Methods and Experimental Measurements. 2018 Jan 31;6(5):899-909. https://doi.org/10.2495/CMEM-V6-N5-899-909