Nonlinear analysis of square concrete-filled double-skin steel tubular columns under axial compression

2020 ◽  
Vol 216 ◽  
pp. 110678
Author(s):  
Pouria Ayough ◽  
N.H. Ramli Sulong ◽  
Zainah Ibrahim ◽  
Po-Chien Hsiao
Keyword(s):  
Nonlinear Analysis ◽  
Axial Compression ◽  
Tubular Columns ◽  
Double Skin

Behavior of hybrid FRP-concrete-steel double-skin tubular columns subjected to cyclic axial compression

2012 ◽  
Vol 61 ◽  
pp. 196-203 ◽  
Author(s):  
T. Yu ◽  
B. Zhang ◽  
Y.B. Cao ◽  
J.G. Teng
Keyword(s):  
Axial Compression ◽  
Tubular Columns ◽  
Double Skin

Influence of Inner Steel Tube Diameter on Compressive Behavior of Square FRP-HSC-Steel Double-Skin Tubular Columns

2015 ◽  
Vol 1119 ◽  
pp. 688-693 ◽  
Author(s):  
Butje Alfonsius Louk Fanggi ◽  
Togay Ozbakkloglu
Keyword(s):  
Axial Compression ◽  
Axial Stress ◽  
Steel Tube ◽  
Tube Diameter ◽  
Experimental Program ◽  
Composite Columns ◽  
Tubular Columns ◽  
Column System ◽  
Double Skin ◽  
The University

FRP-concrete-steel double-skin tubular columns (DSTCs) are a new form composite column system that effectively combines the advantages of the constituent materials. The performance of this column system has been experimentally investigated in a number of recent studies. However, apart from a single study reported on square DSTCs, all of the existing studies have been concerned with DSTCs with circular external tubes. This paper reports on part of an ongoing experimental program at the University of Adelaide on FRP-concrete-steel composite columns. The results from 12 square hollow and concrete-filled DSTCs and six companion hollow concrete-filled FRP tubes (H-CFFTs) that were tested under axial compression are presented. Results of the experimental study indicate that hollow DSTCs with larger inner steel tube diameters develop similar ultimate axial stresses to but significantly larger axial strains than companion DSTCs with smaller inner steel tubes. The results also show that, in concrete-filled DSTCs with similar Ds/ts ratios, an increase in the steel tube diameter leads to an increase in both axial stress and strain of concrete. It was observed that H-CFFTs perform significantly worse than both hollow and filled DSTCs under axial compression, and their behavior further degrades with an increase in the diameter of their inner voids.

Experimental investigation of rubberised concrete-filled double skin square tubular columns under axial compression

2018 ◽  
Vol 171 ◽  
pp. 730-746 ◽  
Author(s):  
Mohamed Elchalakani ◽  
M.F. Hassanein ◽  
Ali Karrech ◽  
Bo Yang
Keyword(s):  
Experimental Investigation ◽  
Axial Compression ◽  
Tubular Columns ◽  
Double Skin

Dynamic performance of RAC-filled double-skin tubular columns subjected to cyclic axial compression

2020 ◽  
Vol 248 ◽  
pp. 118665 ◽  
Author(s):  
Zhe Xiong ◽  
Qinglong Cai ◽  
Feng Liu ◽  
Lijuan Li ◽  
Yueling Long
Keyword(s):  
Axial Compression ◽  
Dynamic Performance ◽  
Tubular Columns ◽  
Double Skin

Experimental investigation on the behavior of GFRP-RAC-steel double-skin tubular columns under axial compression

2018 ◽  
Vol 132 ◽  
pp. 350-361 ◽  
Author(s):  
Zhe Xiong ◽  
Jianping Deng ◽  
Feng Liu ◽  
Lijuan Li ◽  
Wenxian Feng
Keyword(s):  
Experimental Investigation ◽  
Axial Compression ◽  
Tubular Columns ◽  
Double Skin

scholarly journals Behavior of Concrete-Filled Single and Double-Skin uPVC Tubular Columns Under Axial Compression Loads

2019 ◽  
Vol 13 (1) ◽  
pp. 164-177 ◽  
Author(s):  
Abraham M. Woldemariam ◽  
Walter O. Oyawa ◽  
Timothy Nyomboi
Keyword(s):  
Energy Absorption ◽  
Axial Compression ◽  
High Performance ◽  
Concrete Structures ◽  
Construction Materials ◽  
Absorption Capacity ◽  
Peak Strength ◽  
Energy Absorption Capacity ◽  
Tubular Columns ◽  
Double Skin

Background: There is an increased demand for high-performance materials in the construction industry due to the high cost, the difficulty of sourcing and shortcomings of the existing construction materials. Some of the deficiencies are corrosion of steel, brittle failure and rapid deterioration of reinforced concrete structures in a harsh environment. Nowadays, there is also a move from one material to another due to the difficulty of sourcing i.e. timber electric poles to concrete poles due to the difficulty of sourcing native hardwood. These situations have triggered the interest to develop an alternative structural system. Objective: This paper presents the behavior of unconfined concrete, Concrete-Filled Single Skin uPVC Tubular (CFSUT) and concrete-filled double skin uPVC tubular (CFDUT) members under axial compression loads. Method: The unconfined concrete cylinders, CFSUT and CFDUT specimens were prepared from a concrete class of C25 and tested using a UTM machine at a rate of 0.2MPa/s. The parameters considered where thickness to diameter ratio (2t/D), aspect ratio (h/D) and hollow ratio (d/D). Also, a model was developed to predict the peak strength of CFSUT and CFDUT specimens. Results: The result shows that both CFSUT and CFDUT specimens exhibited improved strength, ductility, and energy absorption capacity. For CFSUT and CFSUT specimens, the strength, ductility, and energy absorption capacity increased by more than 1.32, 3.75 and 14.75 times compared to the unconfined concrete specimens, respectively. It is found that the strength decreased as the h/D and d/D ratios increased. The result also shows that the strain of CFSUT and CFDUT at the peak strength increased by more than 3.16 times compared to the unconfined concrete specimens. The proposed model accurately predicted the peak strength with AAE of 2.13%. Conclusion: The uPVC confinement provided a remarkable improvement on the strength, ductility and energy absorption of concrete. Therefore, uPVC tubes can be used as confining material for bridge piers, piles, electric poles, and building columns to increase the strength, ductility and energy absorption of concrete structures.

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