Numerical study of built-up double-Z members in bending and compression

Georgieva, Iveta; Schueremans, Luc; Pyl, Lincy

doi:10.1016/j.tws.2012.07.005

Cited by 39 publications

(12 citation statements)

References 12 publications

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“…Anapayan and Mahendran (2010) have presented the behaviour and capacity of light steel flexural members subject to LTB. Numerical investigation of CFS members subjected to bending and compression of built-up double Z-members has been discussed by Georgieva et al (2011).…”

Section: Introductionmentioning

confidence: 99%

Investigation on cold-formed steel lipped channel built-up I beam with intermediate web stiffener

Manikandan¹,

Thulasi²

2019

Int J Adv Struct Eng

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The aim of the present study is to examine the behaviour of cold-formed steel (CFS) lipped channel built-up I-section with edge and intermediate web stiffeners under bending. Initially, the section dimension of length, width of the flange and depth of the sections are optimized numerically and finally, it is validated with the test results. All the select cross-section dimensions have satisfied the pre-qualified beam dimensions. Numerical analysis is carried out using the software ABAQUS. Totally, four section geometries are tested experimentally. After validation, a total of 75 parametric studies are carried out using the verified finite element model. All the results are compared with the direct strength method specifications for CFS structures and the suitable design modifications are detailed.

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Section: Introductionmentioning

confidence: 99%

Investigation on cold-formed steel lipped channel built-up I beam with intermediate web stiffener

Manikandan¹,

Thulasi²

2019

Int J Adv Struct Eng

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“…Based on the resulted critical loads, they evaluated the existing theoretical methods of the equivalent slenderness and reported that the theoretical methods are generally conservative. Georgieva et al (2012b) performed finite-element (FE) simulations to the CFS built-up members made by bolted double-Z frame member and compared with test results.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of cold-formed steel built-up battened columns composed of four lipped angles: Tests and numerical validation

Anbarasu¹

2019

Advances in Structural Engineering

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This article mainly investigates the behaviour and strength of built-up battened box column composed of lipped angles under axial compression. Ten specimens were fabricated and tested under pinned with warping-restrained end condition including two different cross-section dimensions of columns with five different geometric lengths. Three material tensile coupon tests were conducted to obtain the material properties of the steel used for fabricating the test specimens. The overall initial geometric imperfections were measured. The plate slenderness, member slenderness, chord slenderness and slenderness of batten plates may affect the compression behaviour of cold-formed steel built-up battened box columns and were accordingly investigated. It was found that the chord slenderness significantly affects the compressive strength of the built-up columns. Test results, including the compression resistances, the load versus displacement responses and the deformed shapes were presented. The test strengths were compared with the design strengths predicted using the North American Specifications (AISI-S100:2016), EuroCode (EN1993-1-3:2006) and design equations proposed by EI Aghoury et al. The design strengths predictions by these two design standards were unconservative, with EI Aghoury et al.’s standard performing better. Finite-element models were developed and verified against the test results.

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“…The BTB member deforms in local buckling between the connections, and on each end, and fails with a smooth curve with the flange buckling near mid-span [4]. BTB columns were extensively studied by Jakab [5], Georgieva et al [6], and Xu et al [7]. BU columns were studied by Dunai [8], Young and Chen [9], Liu et al [10], Whittle and Ramseyer [11], Reyes and Guzmán [12], and Piyawat et al [13].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cross-Section Type and Degree of Utilization on Failure Time and Temperature of Cold-Formed Steel Column under ISO Fire

Muftah

Sani

Mohammad

2019

Metals

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An investigation into fire resistance subjected to the ISO fire standard was conducted on a cold-formed steel (CFS) column. The variables involved were the CFS sections with various cross-section types and service loadings known as the degree of utilization. Three types of cross-section, known as channel, back-to-back (BTB), and box-up (BU) sections, were studied. All supports for the column are in constant condition. To simulate the real fire situation, the column was preloaded at 30%, 50%, and 70% of its ultimate strength. After the load was static, the column was exposed to the ISO fire standard. The column was loaded at the centroid of the section. The temperature at the column surface and the time was recorded until the column became unstable. The results show that the shape did not have any significant effects on the critical temperature of the CFS columns. The higher the applied load—or as used in this study, the higher the degree of utilization of the CFS columns—the greater the negative linear effect on their critical temperature. It is concluded that the minimum limiting temperature is 400 °C and the minimum limiting time is four minutes for the CFS column.

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Numerical study of built-up double-Z members in bending and compression

Cited by 39 publications

References 12 publications

Investigation on cold-formed steel lipped channel built-up I beam with intermediate web stiffener

Investigation on cold-formed steel lipped channel built-up I beam with intermediate web stiffener

Behaviour of cold-formed steel built-up battened columns composed of four lipped angles: Tests and numerical validation

Effects of Cross-Section Type and Degree of Utilization on Failure Time and Temperature of Cold-Formed Steel Column under ISO Fire

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