Direct analysis for structures made of high strength steel

Si Wei Liu, Siu Lai Chan, Tian Ji Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Buckling curves for high strength steel are not easily obtainable because of limited resources in testing the members under high loads, resulting in difficulty for engineers to design structures made of high strength steels. This paper proposes a method based on direct analysis (DA) method for design of high-strength steel members and frames allowing explicit modeling of residual stresses such that numerical simulation analysis and design can be conducted as substitutes of full-scale physical tests. A section analysis technique based on quasi-Newton iterative scheme is adopted to take into account the effects of residual stress with the geometrical imperfections measured. Residual stress for the welded box-sections and H-sections fabricated by high-strength steel are measured and adopted for illustration. To complete the consideration of buckling and second-order effects, the initially crooked with arbitrarily-located-hinge (ALH) element is introduced. A fiber hinge model using the sectional strength-iteration surfaces is used for modeling of material yields. Several examples are employed to verify the accuracy and validity of the proposed approach. This paper is to contribute to the formulation of a versatile numerical procedure to account for residual stresses and geometric imperfections separately for design of high-strength steel members and frames where physical tests are expensive.

Original languageEnglish
Title of host publicationComposite Construction in Steel and Concrete VIII - Proceedings of the 8th International Conference on Composite Construction in Steel and Concrete, 2017
EditorsGian Andrea Rassati, Jerome F. Hajjar, Roberto T. Leon
PublisherAmerican Institute of Steel Construction, AISC
Pages690-701
Number of pages12
ISBN (Print)9781564240620
Publication statusPublished - Jul 2017
Event8th International Conference on Composite Construction in Steel and Concrete, 2017 - Jackson, United States
Duration: 29 Jul 20172 Aug 2017

Publication series

NameComposite Construction in Steel and Concrete VIII - Proceedings of the 8th International Conference on Composite Construction in Steel and Concrete, 2017

Conference

Conference8th International Conference on Composite Construction in Steel and Concrete, 2017
Country/TerritoryUnited States
CityJackson
Period29/07/172/08/17

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction

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