A consistent analytical model for tapered steel members with symmetric or asymmetric variations

Zuo Lei Du, Zhi Xia Ding, Yao Peng Liu, Siu Lai Chan

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

Abstract

In this paper, a consistent analytical model for tapered steel members with symmetric or asymmetric variations is proposed for the second-order inelastic analysis of steel structures. In past decades, the tapered steel members are modeled by stepped elements, which is time-consuming of model building and analysis. Simply modeling methods of tapered members were proposed to deal with symmetric and asymmetric variations respectively by previous studies. To unify the modeling method for symmetric and asymmetric variation, a consistent analytical model is proposed in this study. The model utilizes the flexibility-based beam-column element with initial member imperfection, which can get an accurate simulation for tapered members with symmetric or asymmetric variations in the elastic or elastic-plastic analysis. Besides, the model is appropriate for various patterns of initial member imperfection that varies from prismatic members, which will be convenient for the future research related to the influence on member resistance due to different initial imperfection patterns. Several examples are given in this paper to illustrate the accuracy and practicability.

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
CountryChina
CityHong Kong
Period5/12/187/12/18

Keywords

  • Direct analysis
  • Flexibility-based beam column
  • Initial imperfection
  • Tapered members

ASJC Scopus subject areas

  • Metals and Alloys
  • Civil and Structural Engineering

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