Structural behaviour of slender columns of high strength S690 steel welded H-sections under compression

Ma, Tianyu; Liu, Xiao; Hu, Yue; Chung, Kwok Fai

doi:10.1016/j.engstruct.2017.12.006

Cited by 62 publications

(27 citation statements)

References 20 publications

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“…A brief review of the previous experimental and numerical studies of S690 high strength steel welded I-section structural members is provided herein. Rasmussen and Hancock [4] performed stub column tests on S690 welded Isections to investigate their local buckling responses and compression resistances, while the flexural buckling behaviour and strengths of S690 welded I-section long columns were experimentally and numerically studied in [5][6][7][8][9]. Ma et al [10,11] carried out a testing and numerical simulation programme to examine the global stability of S690 welded I-section beam-columns subject to combined compression and bending.…”

Section: Introductionmentioning

confidence: 99%

Testing, numerical modelling and design of S690 high strength steel welded I-section stub columns

Sun

Liang

Zhao

2019

Journal of Constructional Steel Research

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Section: Introductionmentioning

confidence: 99%

Testing, numerical modelling and design of S690 high strength steel welded I-section stub columns

Sun

Liang

Zhao

2019

Journal of Constructional Steel Research

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“…The lack of experimental verification of high strength steel structural members and joints at present limits the actual application of high strength steel in construction engineering. Experimental investigations have therefore been prompted to verify the structural behaviour of various types of high strength steel components (e.g., stub columns [1][2][3][4], long columns [5][6][7][8][9] and beam-columns [10]) of Ishaped sections, quantify their cross-section (or member) capacities, and develop precise design approaches. However, it is worth noting that research into S690 high strength steel welded I-section beams remains relatively scarce, despite three previous studies carried out by…”

Section: Introductionmentioning

confidence: 99%

In-plane bending behaviour and capacities of S690 high strength steel welded I-section beams

Sun

Liang

et al. 2019

Journal of Constructional Steel Research

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The present paper describes an in-depth experimental and numerical investigation into the inplane flexural behaviour and bending moment resistances of S690 high strength steel welded I-section beams. The experimental investigation was conducted on six different welded Isections fabricated from the same batch of 5 mm thick S700MC high strength steel hot-rolled plated by means of gas metal arc welding, and involved initial local geometric imperfection measurements and twelve in-plane four-point bending tests, with six performed about the crosssection major principal axes and another six conducted about the cross-section minor principal axes. Following the experimental study, a numerical investigation was performed, where the developed finite element models were firstly validated against the test results and then used to perform parametric studies to generate further structural performance data over a broader range of cross-section sizes. The obtained experimental and numerical results were carefully analysed 2 and then adopted to evaluate the accuracy of the existing slenderness limits (for classifications of plate elements and cross-sections) and local buckling design rules for S690 high strength steel welded I-sections in bending, as set out in the European, Australian and American standards. The results of the evaluation revealed that the codified slenderness limits are generally safe when used for the classification of the constituent plate elements of the examined S690 high strength steel welded I-section beams, except for that given in the American specification for slender/non-slender outstand elements in compression. All of the three considered design standards were shown to yield accurate cross-section bending moment capacity predictions for compact (Class 1 and 2) S690 high strength steel welded I-section beams bent about both the principal axes and non-compact (Class 3) S690 high strength steel welded I-section beams bent about the major principal axes, but resulted in a rather high level of conservatism in predicting the cross-section bending moment capacities for non-compact (Class 3) S690 high strength steel welded I-sections in bending about the minor principal axes and slender (Class 4) S690 high strength steel welded I-sections subjected to both major-axis bending and minor-axis bending.

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“…The result indicated that the stability condition of steel tubes has been reduced regarding the standard designs. In many other experimental studies on buckling behavior of columns, such as box section (800 MPa yield strength steel) [7,8], I-section (690 and 460 MPa yield strength steels) [9,10] and hollow circular section (420 MPa yield strength steel) [11], test results demonstrated that buckling appeared earlier than estimation provided by existing design standards. However, all of these laboratory experiments were generally complex, costly and time consuming.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental studies on buckling behavior of columns showed that the relationships between load and displacement is highly nonlinear [6,9]. Such nonlinear problem makes the analysis of structural elements behaviors under compression more complicated [12,13].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Artificial Intelligence Approaches for Predicting Buckling Damage of Steel Columns Under Axial Compression

Pham

et al. 2019

Materials

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This study aims to investigate the prediction of critical buckling load of steel columns using two hybrid Artificial Intelligence (AI) models such as Adaptive Neuro-Fuzzy Inference System optimized by Genetic Algorithm (ANFIS-GA) and Adaptive Neuro-Fuzzy Inference System optimized by Particle Swarm Optimization (ANFIS-PSO). For this purpose, a total number of 57 experimental buckling tests of novel high strength steel Y-section columns were collected from the available literature to generate the dataset for training and validating the two proposed AI models. Quality assessment criteria such as coefficient of determination (R2), Mean Absolute Error (MAE) and Root Mean Squared Error (RMSE) were used to validate and evaluate the performance of the prediction models. Results showed that both ANFIS-GA and ANFIS-PSO had a strong ability in predicting the buckling load of steel columns, but ANFIS-PSO (R2 = 0.929, RMSE = 60.522 and MAE = 44.044) was slightly better than ANFIS-GA (R2 = 0.916, RMSE = 65.371 and MAE = 48.588). The two models were also robust even with the presence of input variability, as investigated via Monte Carlo simulations. This study showed that the hybrid AI techniques could help constructing an efficient numerical tool for buckling analysis.

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Structural behaviour of slender columns of high strength S690 steel welded H-sections under compression

Cited by 62 publications

References 20 publications

Testing, numerical modelling and design of S690 high strength steel welded I-section stub columns

Testing, numerical modelling and design of S690 high strength steel welded I-section stub columns

In-plane bending behaviour and capacities of S690 high strength steel welded I-section beams

Hybrid Artificial Intelligence Approaches for Predicting Buckling Damage of Steel Columns Under Axial Compression

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