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Open Access Article
1 - Strain Hardening Analysis for M-P Interaction in Metallic Beam of T-Section
M Hosseini H Hatami -
Open Access Article
2 - Dynamic Response of Bi-Directional Functionally Graded Materials (BDFGMs) Beams Rested on Visco-Pasternak Foundation Under Periodic Axial Force
A.A Ghorbanpour Arani S Niknejad A.A Abbasian Arani -
Open Access Article
3 - Vibration Analysis of a Nonlinear Beam Under Axial Force by Homotopy Analysis Method
A.A Motallebi M Poorjamshidian J Sheikhi -
Open Access Article
4 - Performance of Mid-rise Buildings with Tubular Structure Under the Effect of Near Field Earthquakes
Hooman Mazlooma Maryam Firoozi Nezamabadi -
Open Access Article
5 - Investigation of the effective factors for eliminating the defect in the CFT columns with an asymmetric L-shaped columns by the finite element Analysis
seyed ali mousavi davoudi morteza naghipourThe use of CFT-filled steel columns is increasing worldwide due to the proper co-operation of concrete and steel, with more concrete steel columns being implemented in circular shapes, which is due to the fact that the core concrete is more enclosed with the circular cr MoreThe use of CFT-filled steel columns is increasing worldwide due to the proper co-operation of concrete and steel, with more concrete steel columns being implemented in circular shapes, which is due to the fact that the core concrete is more enclosed with the circular cross-sections, but sometimes it is impossible to use symmetrical cross sections and other forms such as L-shaped crosses are used, which create less confinement for the core because of their asymmetry. This issue decreases the bearing capacity on these columns formed by an asymmetric L-section. The aim of this study was to study the asymmetric L-shaped cross-section of steel-filled concrete columns in order to provide the reduction of confinement due to effective parameters such as height, steel cross-section thickness and compressive stress. In this investigation, steel wall thickness, height, and compressive strength of concrete on the effect of securing core concrete confinement in L-shaped sections under finite element analysis were observed that the effect of steel wall thickness (t) in L-shaped cross-sections is one of the most effective parameters to remove the confinement defect that the impact of this effect is, on average, about 18.31% more higher than the parameters of height and compressive strength of concrete. Finally, it was concluded that the asymmetric L-shaped sections would be more confined by changing the thickness of the steel wall compared to the concrete compressive strength and height parameter. Manuscript profile -
Open Access Article
6 - The study of mechanical behavior of composite steel columns filled with concrete with cross-section (T) shape under numerical sensitivity analysis of finite element under axial load
seyed ali mousavi davoudi morteza naghipourConcrete Filled Tube (CFT) steel columns have become increasingly popular in recent years due to their many advantages in industrial and high-rise buildings, bridges, piers and piles. These columns often run in circular shapes. The main reason for this is that circular MoreConcrete Filled Tube (CFT) steel columns have become increasingly popular in recent years due to their many advantages in industrial and high-rise buildings, bridges, piers and piles. These columns often run in circular shapes. The main reason for this is that circular sections create more confinement than other sections in core concrete. This caused the circular sections to be used more frequently in the CFT columns than other sections. But sometimes it will be impossible to use circular sections and will have to use special forms, such as square and mesial sections, and L and T-shaped sections in some parts of the building. Due to the importance of this issue in this paper, we tried to introduce and investigate the mechanical behavior of CFT columns with T-shaped geometrical cross section and to investigate the parametric effect of steel wall thickness, and concrete compressive stress, on the mechanical capacity and behavior of these columns. Finally, after conducting the research, it was found that in CFT columns with T-geometrical cross section, between the effect of steel wall thickness and the type of concrete, the steel wall thickness parameter is the most influential parameter on the bearing capacity of the CFT columns, and also between the steel wall thickness parameter and the cross section height, Influence of elevation changes on ductility, hardness, and bearing capacity of the cross section It is greater than the thickness of the steel wall. Manuscript profile -
Open Access Article
7 - Study of the Behavior of Composite Steel Columns Filled with Short (non-slender) Concrete with (L)-shaped Geometric Cross Section under Numerical Sensitivity Analysis (FEM) with Axial Compression Loading
seyed ali mousavi davoudi morteza naghipourIn recent years, the use of concrete-filled steel sections (CFST) has been widely used for many benefits, including excellent seismic performance, high strength, high flexibility and energy absorption capacity relative to concrete (RC) and steel sections in the construc MoreIn recent years, the use of concrete-filled steel sections (CFST) has been widely used for many benefits, including excellent seismic performance, high strength, high flexibility and energy absorption capacity relative to concrete (RC) and steel sections in the construction industry. These columns are often more commonly used in the form of circles. The main reason for this is the point that circular sections create more enclosure than other sections in the core concrete. This makes the circular sections more widely used in columns (CFST) than in other sections. However, in some cases, the use of circular sections will be impossible, including architectural considerations, the implementation of more economical and easier connections in the quadratic sections than the circular sections, these causes certain shapes, including sections Square and flat sections and sections with L and T shape shapes are used in some parts of the building. considering the importance of this issue in this paper, we tried to introduce and investigate the mechanical behavior of short columns (CFST) with L-shaped geometric section and study the parametric effect of steel wall thickness and compressive stress of concrete on the capacity and mechanical behavior of these columns at the end and after analysis of the study samples, it was determined in the finite element analysis (FEM) that, in columns (CFST), the effect of the thickness of the steel structure was more effective on the capacity and mechanical behavior of the columns (CFST) with the geometric cross section L will be the shape. Manuscript profile