Monotonic tests and numerical validation of cold-formed steel battened built-up columns

Dar, M. Adil; Sahoo, Dipti Ranjan; Jain, Arvind K.; Sharma, Saurabh

doi:10.1016/j.tws.2020.107275

Cited by 12 publications

(14 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This adds significantly to the strength and stiffness characteristics of the gapped built-up column. The past studies on gapped CFS built-up columns comprised of angles (Dar et al, 2021a;2018;Anbarasu and Dar, 2020a;EI Aghoury et al, 2013), channels (Meza et al, 2020;Anbarasu and Venkatesan, 2019;Ghannam, 2017;Anbarasu and Dar, 2020b;Anbarasu and Vijayanad, 2017;Roy et al, 2018;Dar et al, 2021b;2020;Rahnavarad et al, 2021;Muthuraman et al, 2020;Vijayanand and Anbarasu, 2020;Kherbouche and Megnounif, 2019;Anbarasu et al, 2015;Dabaon et al, 2015a; and tubes (Chen et al, 2020) as chord members. Although, most of these studies mainly adopted channels as chords.…”

Section: Introductionmentioning

confidence: 99%

“…Although, most of these studies mainly adopted channels as chords. Different types of lateral connecting elements were adopted, which include plates over the full column height (Meza et al, 2020;Anbarasu and Venkatesan, 2019;Ghannam, 2017), web-spacers (Anbarasu and Dar, 2020b;Anbarasu and Vijayanad, 2017;Roy et al, 2018) at intermediate locations, lacing bars (Dar et al, 2018(Dar et al, , 2019(Dar et al, , 2021a and batten plates (Anbarasu and Dar, 2020a;Anbarasu, 2020;EI Aghoury et al, 2013;Dar et al, 2021b;2020;Rahnavarad et al, 2021;Muthuraman et al, 2020;Vijayanand and Anbarasu, 2020;Kherbouche and Megnounif, 2019;Anbarasu et al, 2015;Dabaon et al, 2015a;. These studies include both experimental and numerical investigations.…”

Section: Introductionmentioning

confidence: 99%

“…Further, the adoption of lipped channels as chord members can improve the buckling strength of the built-up section, as the lips stiffen the flange elements, which in turn stiffen the web plate elements. It is worth noting that some studies have been conducted on such battened built-up columns, wherein even improved design rules have been brought out (Anbarasu, 2020(Anbarasu, , 2020aEI Aghoury et al, 2013;Dar et al, 2021b;2020;Rahnavarad et al, 2021;Muthuraman et al, 2020;Vijayanand and Anbarasu, 2020;Kherbouche and Megnounif, 2019;Anbarasu et al, 2015) for better strength predictions of such built-up columns. However, there is a major shortcoming in such studies, as all of them are totally numerical, and not a single test result on such columns is available anywhere in the literature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cold-formed steel battened built-up columns: Experimental behaviour and verification of different design rules developed

Dar

Vijayanand²,

Anbarasu³

et al. 2021

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

Some of the past studies on cold-formed steel (CFS) battened built-up columns have resulted in the development of new design rules for predicting their axial strengths. However, the main drawbacks of such studies are that they are purely numerical and the numerical models developed for such parametric studies were validated using the test results on similar built-up column configurations, but not the exact ones. Therefore, experimental studies on CFS battened columns comprising of lipped channels are needed for verifying the accuracy of the proposed design rules for CFS battened columns. This paper reports an experimental study performed on CFS built-up battened columns under axial compression. Adequately spaced identical lipped channels in the back-to-back arrangement were used as chords and were connected by batten plates laterally with self-driving screws to form the built-up members. The dimensions of chords were fixed as per the geometric limits given out in the North American Specifications (NAS) for the design of CFS structural members. The sectional compactness of the chords and the overall slenderness of the built-up columns were varied by altering the thickness of the channels and height of the built-up columns, respectively. A total of 20 built-up sections were tested under uniform compression to investigate the behavioural changes in the built-up columns due to these variations. The behaviour assessment was made in terms of peak strengths, load–displacement response and failure modes of the test specimens. The current design standards on CFS structures were used to determine the design strengths and were compared against the test strengths for assessing their adequacy. Furthermore, as discussed in the beginning, the test strengths were used to verify the accuracy of the different relevant proposed design rules in the literature.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cold-formed steel battened built-up columns: Experimental behaviour and verification of different design rules developed

Dar

Vijayanand²,

Anbarasu³

et al. 2021

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…Further, it requires more workforce for fabrication, as the lateral connectors need to be fastened on all four sides. This problem was conveniently resolved using channel chords, with lateral connections only on two sides 11 , 13 – 18 .…”

Section: Introductionmentioning

confidence: 99%

“…Adopting the right size and shape of mesh is essential in obtaining accuracy in numerical modelling without compromising on the computational efforts required to achieve the same. Therefore, a mesh convergence study was conducted on T2T-50-100 13 by varying the square mesh size (5 mm, 10 mm, 15 mm, and 20 mm) to obtain the optimum size. The findings of the mesh convergence study are summarized in Table 1 .…”

Section: Introductionmentioning

confidence: 99%

Adoption of hooped-battens in cold-formed steel built-up columns for superior axial performance

Sadid,

Dar,

Ghowsi

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Previous research on cold-formed steel (CFS) battened columns has identified the critical factors influencing their performance and accordingly, their limiting values for improved performance have been recommended. However, these studies involved connecting battens to the chords (channels) via their flanges, leaving the slenderest component disconnected from the web. This study introduces a novel hooped-batten (tubular-element) that links both webs and flanges of the chords together, thereby improving the structural integrity of the built-up system and curtailing the half-wave buckling length in the webs. As a result, axial strength and stability in these built-up columns may improve adequately. Firstly, a numerical model of a conventional CFS battened column was developed in ABAQUS and verified against test results on the same reported in literature. Afterward, the validated model was used to simulate the behaviour of CFS built-up columns with hooped-battens. Two key parameters i.e., unbraced chord slenderness and overall column slenderness were varied to explore their influence on the axial behaviour of built-up columns in terms of peak strengths, failure modes and load-displacement characteristics. The performance of the hooped-battened columns was compared with the identical conventional battened columns, which reflects that the former exhibits superior strength and stability characteristics over the latter.

show abstract

Nonlinear Response of CFS-Laced Built-Up Columns—A Numerical Parametric Study

Dar

Sahoo

Jain

2023

Lecture Notes in Civil Engineering

View full text Add to dashboard Cite

Monotonic tests and numerical validation of cold-formed steel battened built-up columns

Cited by 12 publications

References 36 publications

Cold-formed steel battened built-up columns: Experimental behaviour and verification of different design rules developed

Cold-formed steel battened built-up columns: Experimental behaviour and verification of different design rules developed

Adoption of hooped-battens in cold-formed steel built-up columns for superior axial performance

Nonlinear Response of CFS-Laced Built-Up Columns—A Numerical Parametric Study

Contact Info

Product

Resources

About