Overall buckling behaviour and design of high-strength steel welded section columns

Ban, Huiyong; Shi, Gang

doi:10.1016/j.jcsr.2017.12.026

Cited by 55 publications

(29 citation statements)

References 21 publications

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“…In 2018 Ban and Shi [25] reviewed 80 HSS column specimens in existing publications, validated the finite element model and conducted parametric analyses of the initial geometric imperfections, the residual stress, the steel grades and the Y/T ratios. Based on the test results reviewed, column curves in existing design codes could not accurately present the stability behaviour of HSS columns, generally providing a conservative design requirement.…”

Section: Local Buckling Of Columnsmentioning

confidence: 99%

“…To modify the existing column curves by updating imperfection factors, which could be obtained from a non-linear fitting of experimental or numerical analysis results.3. The adaptation of the column curve expression.Based on the Perry-Roberson formula, Ban and Shi recommended new theoretical column curves by introducing imperfection parameters independently of the steel strength, which could cover the overall buckling design of welded I-and box-section columns made from both ordinary strength steel and HSS[25].…”

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confidence: 99%

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Research advances in HSS structures at Tsinghua University and codification of the design specification

Shi

Chen

2018

Steel Construction

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In Memoriam of Prof. Dr. Bernt Johansson Owing to the advantages in economy, environmental protection and energy efficiency, high‐strength steel (HSS) has represented an important trend in the development of steel structures and has been adopted in numerous building and bridge structures. This article summarizes engineering applications for HSS structures and comprehensively reviews the recent research advances in HSS structures at Tsinghua University. Investigations were conducted into the behaviour and performance of HSS materials, sections, members, connections and structural systems. Based on the research results, the mechanical behaviour of HSS structures could be improved compared with ordinary strength steel structures. In order to update the current design codes so that they are applicable for HSS structures, a new specification in China, the ”Standard for Design of High‐Strength Steel Structures“, is undergoing codification, with Tsinghua University as the chief editorial institute. The outline of the specification, as well as the new design methods included in it, is introduced in this paper.

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Section: Local Buckling Of Columnsmentioning

confidence: 99%

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confidence: 99%

Research advances in HSS structures at Tsinghua University and codification of the design specification

Shi

Chen

2018

Steel Construction

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“…A methodology [20] was devised to estimate the elastoplastic properties of metallic materials from the hardness measurements using the two most frequently used sharp indenters, i.e., the Vickers indenter and the Knoop indenter. In the study [21], the researchers studied overall buckling behavior and design of high-strength steel columns. e study results indicated that with an increase of the yield strength of high-strength steel, compressive residual stresses ratio to the yield strength becomes evidently lower and possesses much less severe e ects on the overall buckling behavior.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis and Stability of Compressed Low‐Carbon Steel Rods in the Elastoplastic Region of Materials

Partskhaladze

Mshvenieradze

Medzmariashvili

et al. 2019

Advances in Civil Engineering

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is paper presents new approaches for solving a problem of the stability of compressed rods in the elastoplastic working region of materials. It is known that the columns of buildings, supports of engineering devices, drill rods of oil, and gas extraction industry may be subjected to significant risk of stability loss. Nowadays, there are design methods based on test results defining the relations (e.g., critical stresses-slenderness) to avoid this risk due to stability loss, but the precision and limits of definition are not always known. e main objectives of the study were to develop new approaches that would allow specifying the values of critical stresses of compressed elements beyond the proportional limit. e problem of stability of the compressed elements in the elastoplastic region was studied according to the stability theory. e authors suggested an original approach to the issue; in particular, the determination of values of the critical stresses and the finding of the points of the bifurcation were carried out by the tangent established by experimental results and by the approximation of the so-called double modulus. Comparative analysis showed the advantage of the proposed approach, particularly that the new critical curves were located below the curves of Engesser-Karman and Shanley and above the critical curves established by building codes. A new approach for the determination of critical stresses in the elastoplastic region was developed through which the structural reliability and economic efficiency was increased by almost 12% compared to the existing approaches.

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“…Yang et al [16][17][18] conducted numerous experiments using short and long columns made of G550 high-strength steel with a yield strength of 550 MPa to study their local and overall buckling properties, and numerical simulations were implemented using ABAQUS finite element software. In China, Shi et al [19][20][21] performed experimental studies on the stability performance of domestic Q460 high-strength steel welded columns with box-shaped cross-sections as well as the stability performance related to the strong axis of S690 and S960 welded H-shaped compression columns. The results of their investigation demonstrated that the stability coefficient of high-strength steel columns was apparently greater than those of common steel columns.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous research results have demonstrated that the use of high-strength steel in axial compression members decreases the sensitivity of the overall stability to initial imperfections [20] , and the decreased ratio of the residual stress to the steel yield strength improved the overall stability coefficient of axial compression members [15]. Therefore, it is essential to ascertain whether or not present steel structural design specifications are applicable to high-strength steels through experimental and theoretical investigations.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Stability of High Strength Steel Long Columns With Box-Sections

2017

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ABSTRACT:Ten long columns made of high strength steel 18Mn2CrMoBA (nominal yield stress is 745 MPa) were employed in axial compression experiments to investigate their overall stability. The columns with thin-walled box-shaped cross-sections were first fabricated into channel shapes followed by welding. The initial geometrical imperfections of the specimens were measured, and the ratio of instability plane initial deflection to the member length was around 1/1000. The finite element model (FEM) which can introduce the influence of geometrical imperfection and residual stress was established. The results of numerical simulation were compared with the experimental results, and the results were in good agreement with the experimental results. Comparisons with Chinese GB50017-2003 specification indicated that the experimental values for the load bearing capacity were greater than that obtained from b-type column curves, but less than a-type column curves. The results were also close to b-type column curves, as defined in the European Eurocode3 steel structure design specification. However, the American ANSI/AISC 360-10 steel structure design specification overestimated the load capacity of this type of long column considered. Therefore, this paper recommends that the design of this type of long column employ the b-type curves specified by the GB50017-2003 or Eurocode3 specifications.

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Overall buckling behaviour and design of high-strength steel welded section columns

Cited by 55 publications

References 21 publications

Research advances in HSS structures at Tsinghua University and codification of the design specification

Research advances in HSS structures at Tsinghua University and codification of the design specification

Buckling Analysis and Stability of Compressed Low‐Carbon Steel Rods in the Elastoplastic Region of Materials

Experimental Study on Stability of High Strength Steel Long Columns With Box-Sections

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