ANALYSIS OF SQUARE CONCRETE-FILLED COLD-FORMED STEEL TUBULAR COLUMNS UNDER AXIAL CYCLIC LOADING | Zendy

Chinnapat Buachart | Zendy

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ANALYSIS OF SQUARE CONCRETE-FILLED COLD-FORMED STEEL TUBULAR COLUMNS UNDER AXIAL CYCLIC LOADING

Author(s) -

Chinnapat Buachart

Publication year - 2018

Publication title -

international journal of geomate

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.267

H-Index - 17

eISSN - 2186-2990

pISSN - 2186-2982

DOI - 10.21660/2018.47.str113

Subject(s) - square (algebra) , materials science , structural engineering , composite material , cold formed steel , cold forming , engineering , mathematics , geometry , buckling

This research studied the behavior of the square concrete-filled cold-formed steel tube (CFST) columns under axial cyclic loading. A total of 9 specimens were tested. All tested specimens are 75×75 millimeter square tube section. The parameters varied in the test are the thickness of steel tube, the compressive strength of filled concrete, and specimen length. The values of tube thickness are 1.8 and 3 millimeters. The column lengths are 500 and 1000 millimeters. In-filled concrete compressive strengths are 0 (unfilled), 20 and 40 MPa, respectively. Then the experimental strengths were compared with the design strengths computed from various international design codes. Finally, the specimens were analyzed by finite element software. The analytical results showed fairly close agreement with experimental results in terms of buckling mode, loaddeformation response, the tension capacity and the decreasing compression capacity under cyclic load.

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