New empirical methods for predicting flexural capacity and stiffness of CFST beam

Ahmed W. Al Zand, Wan Hamidon W. Badaruzzaman, Wadhah M. Tawfeeq

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents new empirical methods to theoretically predict bending moment capacity (Mu) and flexural stiffness values at the initial and serviceability levels (Ki and Ks) of concrete-filled steel tube (CFST) composite beams. A wide range of results for Mu, Ki, and Ks covering various parameters of CFST beams are required to develop these empirical methods. Therefore, 144 numerical CFST models were developed in this study using finite element software. The adequacy of the newly developed empirical methods was validated with the results obtained from previously reported experimental and numerical studies conducted by other researchers. For example, using the new methods, mean values of 0.967 and 0.996 were achieved from the ratios of predicting Mu values to the previously reported values of the rectangular and circular CFST beams, respectively. The mean values were 1.074 and 1.050 from the predicted Ki, and Ks values, respectively. Furthermore, the results of these new methods were compared with the results obtained by the most commonly used standards and methods in this field, namely, EC4, AISC, AIJ, BS5400, and others.

Original languageEnglish
Article number105778
JournalJournal of Constructional Steel Research
Volume164
DOIs
Publication statusPublished - Jan 2020

Fingerprint

Tubular steel structures
Beams and girders
Steel
Stiffness
Concretes
Bending moments
Composite materials

Keywords

  • Bending capacity
  • CFST beam
  • Empirical method
  • Flexural stiffness
  • Numerical study

ASJC Scopus subject areas

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

Cite this

New empirical methods for predicting flexural capacity and stiffness of CFST beam. / Al Zand, Ahmed W.; Badaruzzaman, Wan Hamidon W.; Tawfeeq, Wadhah M.

In: Journal of Constructional Steel Research, Vol. 164, 105778, 01.2020.

Research output: Contribution to journalArticle

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