Hybrid double skin FRP – Steel column with rubberised concrete infill under axial loading

2021 ◽  
Vol 249 ◽  
pp. 113267
Author(s):  
Shovona Khusru ◽  
David P. Thambiratnam ◽  
Mohamed Elchalakani ◽  
Sabrina Fawzia
Keyword(s):  
Axial Loading ◽  
Steel Column ◽  
Double Skin

Study the Behavior of Castellated Steel Column Encasing by Different Reactive Powder Concrete Thickness with Laced Reinforcement

2021 ◽  
Vol 895 ◽  
pp. 97-109
Author(s):  
Mustafa Mazin Ghazi ◽  
Ahmad Jabbar Hussain Alshimmeri
Keyword(s):  
Axial Load ◽  
Local Buckling ◽  
Axial Loading ◽  
Longitudinal Axis ◽  
Load Test ◽  
Reactive Powder Concrete ◽  
Control Group ◽  
Load Carrying ◽  
Steel Column ◽  
Reactive Powder

Castellated columns are structural members that are created by breaking a rolled column along the center-line by flame after that rejoining the equivalent halves by welding such that for better structural strength against axial loading, the total column depth is increased by around 50 percent. The implementation of these institutional members will also contribute to significant economies of material value. The main objectives of this study are to study the enhancement of the load-carrying capacity of castellated columns with encasement of the columns by Reactive Powder Concrete (RPC) and lacing reinforcement, and serviceability of the confined castellated columns. The Castellated columns with RPC and Lacing Reinforcement improve compactness and local buckling (web and flange local buckling), as a result of steel section encasement. This study presents axial load test results for four specimens Castellated columns section encasement by Reactive powder concrete (RPC) with laced reinforcement. The encasement consists of, flanges unstiffened element height was filled with RPC for each side and laced reinforced which are used inclined continuous reinforcement of two layers on each side o0f the web of the castellated column. The inclination angle of lacing reinforcement concerning the longitudinal axis is 45o. Four specimens with four different configurations will be prepared and tested under axial load at columns. The first group was the control group (CSC1) Unconfined castellated steel column, the second group was consists of Castellated columns (web and flange) confined with 17mm of (RPC), welded web, and 6mm laced reinforcement (CSC3). While group three (CSC4) consists of a Castellated steel column same as the sample (CSC3), but without using welding between two parts of the castellated steel column. Groups four and five consist of a Castellated steel column same as sample (CSC4) encased partially with reactive powder concrete (25.5 mm) (CSC5) and full encased flange with reactive powder concrete (34mm) mm (CSC6), respectively. The tested specimens' results show that an increase in the strength of the column competitive with increasing the encased reactive powder concrete thickness. And the best sample was sample CSC6 with (34mm) mm in experimental and ABAQUS results.

Study on the behavior of concrete-filled square double-skin steel tubular stub columns under axial loading

Structures ◽  
2020 ◽  
Vol 23 ◽  
pp. 665-676 ◽  
Author(s):  
Fa-xing Ding ◽  
Wen-jun Wang ◽  
De-ren Lu ◽  
Xue-mei Liu
Keyword(s):  
Axial Loading ◽  
Double Skin ◽  
Stub Columns

Numerical analysis of circular double-skin concrete-filled stainless steel tubular short columns under axial loading

Structures ◽  
2020 ◽  
Vol 24 ◽  
pp. 754-765 ◽  
Author(s):  
Vipulkumar Ishvarbhai Patel ◽  
Qing Quan Liang ◽  
Muhammad N.S. Hadi
Keyword(s):  
Stainless Steel ◽  
Numerical Analysis ◽  
Axial Loading ◽  
Short Columns ◽  
Double Skin

scholarly journals Experimental and Numerical Study of Octagonal Composite Column Subject to Various Loading

2017 ◽  
Author(s):  
Mehdi Ebadi Jamkhaneh ◽  
Mohammad Ali Kafi
Keyword(s):  
Numerical Study ◽  
Slenderness Ratio ◽  
Compressive Loading ◽  
Axial Loading ◽  
Experimental Tests ◽  
Composite Column ◽  
Concrete Confinement ◽  
Steel Column ◽  
Different Types ◽  
The Relationship

In this study, experimental tests of the behaviour of steel and partially encased composite (PEC) columns subjected to compressive loading is performed. Evaluation of this type of composite column under axial loading and numerical analysis of its behaviour under combined torsional and axial loading are the main objectives of this study. At first, a parametric study of PEC columns under axial loading was performed in order to find the relationship between flange slenderness ratio of steel column section and concrete confinement. Width-to-thickness ratio of the flange, diameter and spacing of the transverse links were considered as variables in this study. It was observed that dimension of transverse links had almost no effect on the capacity of the specimens, however smaller transverse links spacing increased both capacity and deformability of the specimens. The comparison of the code equations given in CSA S16-14 and EN 1994-1-1 revealed that the equation in CSA S16-14 underestimates the capacity. Furthermore, different types of retrofit of cross-shaped steel column including concrete encasement, use of stiffener plates and transverse links were investigated in this research. Results revealed that concrete confinement and use of transverse links had respectively the most and the least effect on increasing torsional capacity of the specimens.

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