Numerical investigation on behaviour and design of cold-formed steel built-up column composed of lipped sigma channels

Anbarasu, M.

doi:10.1177/1369433218824499

Cited by 14 publications

(9 citation statements)

References 31 publications

(57 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There were innovative columns investigated in [5,11,31,32]. Georgieva et al [11] compared DSM predictions with experimental buckling capacities of two sections formed by Σ, Z, channel and track profiles using CUFSM software.…”

Section: Assemblage Of Single Innovative Sectionsmentioning

confidence: 99%

“…The built-up members are made of two geometries i.e., open and closed. Higher torsional rigidity is shown by closed sections in contrary to open sections [2,5,[10][11][12]. These elements show unique behaviors of buckling.…”

Section: Introductionmentioning

confidence: 96%

“…CFS single section's capacity to take large compressive loads is minimum. Connection of two or more single sections like the hat, C, Z, etc., give rise to built-up sections [3][4][5] that show greater load carrying capacity than individuals [6][7][8]. Lacings and battens are used to assemble them [9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Sivasathya

Vijayanand

Prabha

et al. 2021

Recent Advancements in Geotechnical Engineering

View full text Add to dashboard Cite

Abstract. Cold-formed Steel (CFS), a sort of steel weighing lesser, suits to be a wise choice of material in the construction of steel structures. It has more benefits that indeed make CFS get famous. Effortless installation can be accomplished with the CFS. It also renders a factor that only a few materials show, that is, longevity. Corrosion does not affect the CFS. Employing under moderate loads, CFS finds to be economically feasible when compared with hot-rolled steel. It can be used as compression members comprising single or built-up members. Since a single member cannot sustain the heavy load, the built-up members can be utilized. Open and closed sections are the two sorts of built-up profiles and these profiles show diverse buckling characteristics. This paper lays out a clear outline of the research works done on providing design recommendations to the codes by employing diverse built-up sections. It is reviewed by categorizing the investigated research works based on the kind of CFS sections chosen by each researcher. It was evident from the study that after validation, many researchers have done parametric study on CFS built-up columns to assess the accuracy of the design strength prediction by code specifications. Many codes failed to estimate the section’s ultimate capacity accurately as there are no specific design equations.

show abstract

Section: Assemblage Of Single Innovative Sectionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Sivasathya

Vijayanand

Prabha

et al. 2021

Recent Advancements in Geotechnical Engineering

View full text Add to dashboard Cite

show abstract

“…e effects of cross section and length of the member on the buckling behavior of the built-up columns connected with four U-sections were tested by Anbarasu et al [10], which showed that DSM cannot predict the ultimate strength of this kind of section. Anbarasu [11] numerically investigated the structural behavior and presented the design method of the CFS built-up column formed with lipped sigma sections based on DSM.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Direct Strength Method for Cold-Formed Steel Built-Up I-Sectional Columns under Axial Compression

Yao¹

2021

Mathematical Problems in Engineering

View full text Add to dashboard Cite

The objective of this paper is to investigate the buckling behavior and design method of the ultimate strength for the cold-formed steel (CFS) built-up I-sectional columns under axial compression which failed in distortional buckling and interactive buckling. A total of 56 CFS built-up I-sectional columns subjected to axial compression were tested, and the different buckling modes and ultimate strengths were analyzed in detail by varying the thickness, the length, the spacing of screws, the end fastener group, and the cross-sectional dimensions of CFS built-up I-sectional columns. It was shown in the test that noticeable interaction of local and distortional buckling or interaction of local, distortional, and global buckling was observed for the built-up I-sectional columns with different lengths and cross-sectional dimensions. A finite element model (FEM) was developed and validated with experimental results. A further parametric study has been conducted including different cross sections and slenderness ratios for the built-up I-sectional columns. The load-carrying capacities obtained from the experimental and numerical study were used to investigate the feasibility of the current direct strength method (DSM) when DSM was applied to CFS built-up I-sectional columns. The comparison results showed that the current DSM is not safe for CFS built-up columns failed in distortional buckling and interactive buckling. Therefore, the improved design formulas were proposed, and their accuracy was verified by using finite element analysis (FEA) and experimental results of CFS built-up I-sectional columns subjected to axial compression.

show abstract

“…It was found that the current and customary models of latticed columns did not suitably reflect the behaviour of numerical examples, and the super element method achieved good approximations. Anbarasu (2019) and Anbarasu and Adil Dar (2020a, 2020b) reported the structural performances of the cold-formed steel (CFS) built-up columns. The numerical procedure was derived in the framework of AS/NZS specifications and European standards (CEN.BS 1993-1-1, 2005) for the safe, less scattered and reliable design strength predictions of battened CFS built-up columns.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on ultimate strength of four-legged latticed columns

Liu

et al. 2021

Advances in Structural Engineering

View full text Add to dashboard Cite

Latticed built-up columns are applied more extensively than solid columns in structural engineering because of their excellent load-carrying capacity and light weight. Studies on the bearing capacity of latticed columns, particularly multiple-legged latticed columns, need to be conducted in detail. In this investigation, seven four-legged latticed column specimens of different bar sections, bar distributions and loading eccentricities under compressive loads were subjected to experimental tests. The initial geometric imperfections of the legs and bars were measured and introduced into the FE numerical method. The experimental results were then compared with those of Geometrical and Material Non-Linear Analysis with Imperfection in ABAQUS software. The combined data indicate that the bar section, bar distribution and loading eccentricity significantly influenced the ultimate strength of four-legged latticed columns, producing maximum variations of 105.67%, 65.7% and 48.48%, respectively. This investigation demonstrates the influence of lacing bars and improves the results obtained from FE numerical analytical techniques.

show abstract

Numerical investigation on behaviour and design of cold-formed steel built-up column composed of lipped sigma channels

Cited by 14 publications

References 31 publications

Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Experimental Study and Direct Strength Method for Cold-Formed Steel Built-Up I-Sectional Columns under Axial Compression

Experimental and numerical investigation on ultimate strength of four-legged latticed columns

Contact Info

Product

Resources

About