Experimental study on bearing behavior of concrete-filled square stainless steel tubular stub columns under axial compression - Details

Author：

Dai, Peng (Dai, Peng.) | Yang, Lu (Yang, Lu.) (Scholars：杨璐) | Wang, Jie (Wang, Jie.) | Gang, Yi (Gang, Yi.) | Yang, Shuxin (Yang, Shuxin.)

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Abstract：

In　this　paper,　the　compressive　behavior　of　concrete-filled　stainless　steel　tubular　(CFSST)　stub　columns　has　been　investigated　through　an　experimental　program.　A　total　of　24　specimens,　including　nine　austenitic　CFSST,　nine　duplex　CFSST　stub　columns　and　six　stainless　steel　tubes　of　corresponding　cross-section　size,　were　tested　under　axial　compression.　Load-axial　displacement　curves,　load-strain　curves　and　failure　modes　were　measured　during　the　tests.　The　results　show　that　all　CFSST　stub　columns　fail　in　the　form　of　waist　drum　failure　mode,　and　the　stainless　steel　tubes　fail　in　local　buckling　mode　with　two　sides　of　steel　tube　bulging　and　two　sides　being　concave.　The　bearing　capacity　of　specimens　under　axial　compression　increases　with　the　increase　of　the　thickness　of　stainless　steel　tube　and　the　strength　of　concrete.　The　test　results　are　compared　with　the　predicted　load　values　by　codes　BS　EN　1994-1-1,　ANSI/AISC　360-10,　AIJ-CFT　1997,　GB　50936-2014　and　DBJ　13-51-2003,　indicating　that　the　predicted　load　values　by　BS　EN　1994-1-1　are　closest　to　the　test　results.　©　2021,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.

Keyword：

Tubular steel structures Axial compression Concretes

Author Community：

[ 1 ] [Dai, Peng]The Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Dai, Peng]Beijing Engineering Research Centre of High-Rise and Large-Span Prestressed Steel Structures, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Yang, Lu]The Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Yang, Lu]Beijing Engineering Research Centre of High-Rise and Large-Span Prestressed Steel Structures, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Wang, Jie]Department of Architecture and Civil Engineering, University of Bath, Bath; BA27AY, United Kingdom
[ 6 ] [Gang, Yi]The Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [Gang, Yi]Beijing Engineering Research Centre of High-Rise and Large-Span Prestressed Steel Structures, Beijing University of Technology, Beijing; 100124, China
[ 8 ] [Yang, Shuxin]Beijing NO.2 Construction Engineering Co., Ltd., Beijing; 100141, China

Reprint Author's Address：

杨璐
[yang, lu]beijing engineering research centre of high-rise and large-span prestressed steel structures, beijing university of technology, beijing; 100124, china;;[yang, lu]the key laboratory of urban security and disaster engineering of china ministry of education, beijing university of technology, beijing; 100124, china

Email：

lyang@bjut.edu.cn

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