Reading: Strength and Ductility of Stiffened Steel Box Columns of Various Cross-Sectional Configurati...

Download

A- A+
Alt. Display

Section I

Strength and Ductility of Stiffened Steel Box Columns of Various Cross-Sectional Configurations under Lateral Cyclic Loadings

Authors:

T. Thevega ,

University of Peradeniya, LK
About T.

Temporary Instructor in Department of Civil Engineering

 

B.Sc. Eng. (Hons) (Peradeniya)

X close

K. Rajavijayan,

State Development and Construction Corporation, Ratmalana, LK
About K.

Civil Engineer

 

B.Sc. Eng. (Hons) (Peradeniya)

X close

J. A. S. C. Jayasinghe,

University of Peradeniya, LK
About J. A. S. C.

Senior Lecturer in Department of Civil Engineering

 

B.Sc. Eng. (Hons) (Peradeniya), M.Eng. (AIT), PhD. (Tokyo)

X close

K. A. S. Susantha

University of Peradeniya, LK
About K. A. S.

Professor in Department of Engineering Mathematics

 

B.Sc. Eng. (Hons) (Peradeniya), M.Eng. (AIT), D. Eng. (Nagoya)

X close

Abstract

Stiffened steel columns are widely used in bridge piers due to their structural and constructional efficiency. The bridge pier is one of the main structural components in elevated highway transportation. The ability of structures to survive severe earthquakes depends on both strength and ductility. In this study, the stiffeners with different cross-sectional configurations are introduced to improve the strength, ductility and energy absorption capacity of thin-walled steel box columns. All cross-sections are designed with the same cross-sectional area and height for different stiffener arrangements. The columns are analysed by finite element method, incorporating both material and geometric nonlinearities under constant axial load and lateral cyclic loading. Using the lateral loadlateral displacement behaviour, the cross-section with two middle stiffeners shows high strength and ductility capacity. But examining energy absorption behaviour, the cross-section with corner stiffener shows high capacity among analysed columns. Therefore, by considering strength, ductility and energy absorption capacity, the best cross-section is identified as the cross-section with two middle stiffener arrangement with a particular cross-sectional area compared with other cross-sections. In addition to that, local buckling patterns of the columns are examined at different displacement levels to understand the failure modes.
How to Cite: Thevega, T., Rajavijayan, K., Jayasinghe, J.A.S.C. and Susantha, K.A.S., 2021. Strength and Ductility of Stiffened Steel Box Columns of Various Cross-Sectional Configurations under Lateral Cyclic Loadings. Engineer: Journal of the Institution of Engineers, Sri Lanka, 54(2), pp.25–32. DOI: http://doi.org/10.4038/engineer.v54i2.7440
Published on 11 Aug 2021.
Peer Reviewed

Downloads

  • PDF (EN)

    comments powered by Disqus