Recent developments on the numerical algorithms for the analysis of steel and composite sections (ICASS'2018)

Liang Chen, Si Wei Liu, Siu Lai Chan

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

Abstract

The calculations on the cross-section for obtaining the basic properties, i.e., stiffness and strength, are essential for the frame analysis and design using beam-column elements. For regular and simple section shapes, their properties can be easily computed via the closed-form equations. However, when facing to the analysis of the steel and composite sections with a complex shape and complicated material properties, the conventional hand-calculation method is inapplicable. Thus, the numerical analysis method based on the fiber section models is commonly used, but it requires huge computational efforts and usually deficient. Apart from that, our research team has developed the efficient and divergence-free numerical algorithms for arbitrary steel and concrete composite sections with the implementations into the software RCD 2016, where only the steel component is meshed into fibers while the concrete component is automatically divided into layers. A Quasi-Newton iteration method is proposed for determining the section strain distribution and it is numerically stable. This paper reviews the essential theory of the analysis method, as well as the recent developments on the RCD 2016 are summarized. Finally, several featured examples are given for demonstrating the accuracy.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Advances in Steel Structures, ICASS 2018
EditorsSiu Lai Chan, Tak-Ming Chan, Songye Zhu
PublisherHong Kong Institution of Steel Construction
ISBN (Electronic)9889914093, 9789889914097
DOIs
Publication statusPublished - Dec 2018
Event9th International Conference on Advances in Steel Structures, ICASS 2018 - Hong Kong, China
Duration: 5 Dec 20187 Dec 2018

Publication series

NameProceedings of the 9th International Conference on Advances in Steel Structures, ICASS 2018

Conference

Conference9th International Conference on Advances in Steel Structures, ICASS 2018
Country/TerritoryChina
CityHong Kong
Period5/12/187/12/18

Keywords

  • Cross-section Analysis
  • Fibre Sections
  • Numerical Method
  • Quasi-Newton
  • Residual Stress
  • Steel and Concrete Composite

ASJC Scopus subject areas

  • Metals and Alloys
  • Civil and Structural Engineering

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