Behavior of Space Trusses with CFST as Compression Elements

Document Type : Original Article

Authors

1 civil engineering department, Higher Institute of Engineering and Technology, Kafr Al Sheikh, eygpt.

2 Civil Engineering, Faculty of Engineering, Menofia University, Egypt

3 Civil Engineering Dept., Faculty of Engineering, Menoufia University, Shibin Elkom, Egypt

Abstract

Concrete filled tubular steel CFST members are recently used widely due to their proved efficiency. CFST members can carry high axial compression forces which merge the advantages of steel and concrete sections. This paper presents an investigation for the use of CFST members as compression elements in space frames through experimental and finite element (FE) modeling program. This program included two steps. The first step presents a comparison between hollow steel and CFST slender columns. The second step considers the behavior of full space truss with CFST members. The study also presents a finite element modeling for all tested specimens (steel and CFST members). Test results like ultimate load capacity, load against axial shortening and deformed mode shape are presented and discussed. The study reported the improvements that obtained by applying the technique of replacing the compression members in space trusses with CFST elements. The finite element showed an excellent agreement with experimental results.

Keywords

ERJ. Engineering Research Journal
Volume 46, Issue 3
issued on 1/7/2023 in 5 Parts: Part (1) Electrical Engineering, Part (2) Mechanical Engineering, Part (3): Production Engineering, Part (4): Civil Engineering, Part (5) Architectural Engineering,
July 2023
Pages 365-380

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