scholarly journals An Experimental Investigation on Concrete Filled Steel Tube Columns Under Axial Compression

2021 ◽  
Keyword(s):  
Experimental Investigation ◽  
Axial Compression ◽  
American Concrete Institute ◽  
Steel Tube ◽  
Test Program ◽  
Conventional Concrete ◽  
Concrete Filled Steel Tube ◽  
Steel Columns ◽  
Circular Column ◽  
Tubular Sections

Abstract. This paper presents an experimental investigation on the behaviour of concrete filled steel tube columns under axial compression. The steel columns were filled with self-compacting and self-curing concrete instead of normal conventional concrete. A test program consisting of square column, circular column and rectangular column was firstly conducted. The behaviour of three concrete filled steel tubular sections (CFSTs) under axial load is presented. The effect of steel tube dimensions, shapes and confinement of concrete are also examined. Measured column strengths are compared with the values predicted by Euro code 4 and American codes. Euro code 4, gives good estimation of self-compaction concrete. However, lower values as measured during the experiments were predicted by the American Concrete Institute (ACI) equation. Also, the effect of thickness of steel tubes, concrete cube strength and steel percentage is also studied. In addition to CFST column the steel tube also acts as confinement for concrete.

Stone prism encased concrete-filled steel tube columns subjected to axial compression

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 1853-1867
Author(s):  
Yong Ye ◽  
Yang Liu ◽  
Zi-Xiong Guo ◽  
Rachel Chicchi
Keyword(s):  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Shear response of steel fiber reinforced recycled concrete-filled steel tube columns

2021 ◽  
pp. 136943322110093
Author(s):  
Zhenzhen Liu ◽  
Yiyan Lu ◽  
Shan Li ◽  
Jiancong Liao
Keyword(s):  
Axial Compression ◽  
Steel Fiber ◽  
Steel Tube ◽  
Shear Capacity ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Superposition Method ◽  
Fiber Reinforced ◽  
Concrete Filled Steel Tube ◽  
Shear Span

A comprehensive study of the shear characteristics of steel fiber reinforced recycled concrete-filled steel tube (SRCFST) columns is conducted. 50 CFST stub columns are tested with the variables of steel tube diameter-thickness ratio ( D/t), shear span-to-depth ratio (λ), axial compression ratio ( n), and concrete mix. Two types of cements, three recycled aggregate percentages, three water-cement ratios, and three steel fiber contents are considered in design of concrete mixes. The experimental results show that SRCFST columns present the coincident shear behavior of the ordinary CFST columns. As λ is increased, shear resistance shows a downtrend, while the flexural strength presents an increasing trend. Imposing axial compression or thickening steel tube contributes to an adequate safety margin in plastic period. Based on the contributions superposition method, a predicted model of the shear capacity of SRCFST columns is proposed in consideration of shear-span ratio, axial compression, and self-stress.

Reliability analysis of concrete-filled steel tube columns under axial compression

2021 ◽  
Author(s):  
Tran-Trung Nguyen ◽  
Phu-Cuong Nguyen ◽  
Viet Trinh Tran ◽  
Duc-Duy Pham ◽  
Lahouari Benabou
Keyword(s):  
Reliability Analysis ◽  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

scholarly journals Fire resistance of concrete-filled steel tube columns with preload. Part I: Experimental investigation

2019 ◽  
Vol 223 ◽  
pp. 110994 ◽  
Author(s):  
Min Yu ◽  
Tan Wang ◽  
Weijun Huang ◽  
Huanxin Yuan ◽  
Jianqiao Ye
Keyword(s):  
Experimental Investigation ◽  
Fire Resistance ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Experimental Study on Expansive Concrete Filled Steel Tube

2013 ◽  
Vol 275-277 ◽  
pp. 2077-2083
Author(s):  
Kai Cheng Huo ◽  
Xian Cheng Shu ◽  
Huan Huan Yue
Keyword(s):  
Experimental Study ◽  
Temperature Change ◽  
Axial Compression ◽  
High Strength ◽  
Steel Tube ◽  
Concrete Filled Steel Tube ◽  
Vertical Loading ◽  
Expansive Concrete ◽  
Hardening Process ◽  
Mix Proportion

Measure the temperature change of concrete-filled steel tubular with high strength low heat micro-expansive in its hardening process with different mix proportion. Study self-stress of high strength low-heat micro-expansive and study the relations of the expansive admixtures quantity and its changing regularity with the time. Observe the fail of axial compression short column of concrete-filled steel tubular with high strength expansive under vertical loading, study the changing regularity of its stress under loading.

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