Out-of-plane buckling resistance of rolled steel H-section beam-columns under unequal end moments

Giżejowski, M.; Stachura, Z.; Szczerba, Radosław; Gajewski, Marcin

doi:10.1016/j.jcsr.2019.05.016

Cited by 6 publications

(15 citation statements)

References 32 publications

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“…In the paper, there were tested 6 cases of loading -compression without bending (test 1a), bending without compression (test 1b) and 4 different interactions of bending and compression (tests 2a, 2b, 3 and 4). In the next step of research it would be to compare the experimental results with those from Eurocode's General Method of clause 6.3.4 [1] and their refined version presented in [2]. The test results will also be used for strict validation of a shell numerical finite element model of tested subframe specimens.…”

Section: Discussionmentioning

confidence: 99%

“…MEd=NEde. In the next step of research it would be to compare the experimental results with those from Eurocode's General Method of clause 6.3.4 [1] and their refined version presented in [2]. The test results will also be used for strict validation of a shell numerical finite element model of tested subframe specimens.…”

Section: Discussionmentioning

confidence: 99%

“…Depending upon the values of the section inertia moments ratio, the moment gradient ratio ψy and an action effects ratio of the dimensionless maximum moment my = My,Ed,max / Mcy,Rd and the dimensionless axial force n = NEd / Nc,Rd (where Mcy,Rd and Nc,Rd are the cross-sectional resistance in bending and compression according to [1], respectively), the form of buckling changes from that of deflecting laterally to predominantly twisting. The experimental evidence and evolution of numerical predictions about the behaviour of steel beam-columns led in the recent decades to the improvement of design methods for the evaluation of the buckling resistance of beam-columns [2,3] and their implementation in the current European code [1]. The application of Eurocode's GM according to clause 6.3.4 of [1] still lacks a sufficient coincidence with the design method based on the interaction equations of clause 6.3.3 of that code.…”

Section: Introductionmentioning

confidence: 99%

“…The application of Eurocode's GM according to clause 6.3.4 of [1] still lacks a sufficient coincidence with the design method based on the interaction equations of clause 6.3.3 of that code. This has been widely discussed in [2] within the project carried out at the Warsaw University of Technology. As an output of the investigations, the Eurocode's GM was refined and verified using a wide range of numerical simulations of beam-columns with geometrical imperfections of different initial imperfection profile and with material imperfections in the form of standard residual stress patterns.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigations of the flexural‐torsional buckling resistance: Steel rolled I‐section beam‐columns under moment gradient

2021

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Beam‐columns of uniform rolled or equivalent welded sections are the member types most commonly used in steel skeletal structures. EN1993‐1‐1 [1] provides two design procedures of such members, one based on the interaction equations for the section resistance and the member buckling resistance, and the other one based on the so‐called General Method (GM) that tends to follow that of Ayrton‐Perry's procedure used for extreme cases of compression without bending and bending without compression. Above cited design procedures yield similar results when the beam‐column is predominantly under bending but sometimes results being away from each other when the beam‐column is predominantly under compression. Recently, a novel version of GM has been proposed [2], providing a tool of more rational design that yields the results from Eurocode 3 interaction equation procedure in both extreme cases. The proposed procedure is based on the Euclidean norm of dimensionless action effects and evaluation of Maquoi‐Rondal imperfection factor interpolated between those for compression without bending and bending without compression. This analytical procedure was verified with a wide range of advanced numerical simulations incorporating geometrical and material imperfections (residual stresses). In order to validate the accuracy of the proposed procedure, an experimental study on the buckling resistance of rolled I‐section beam‐columns was carried out the results of which are presented in this paper. Firstly, an overview of the experimental programme carried out on subframe specimens is given and then followed by the summary of measurements of deformations as well as global load vs. displacement characteristics for selected specimens. Finally, an assessment of the beam‐column buckling resistance, experimental vs. predicted by Eurocode 3 interaction equations procedure, is presented and conclusions with regard to the preliminary validation exercise are drawn.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental investigations of the flexural‐torsional buckling resistance: Steel rolled I‐section beam‐columns under moment gradient

2021

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“…Kucukler et al (2015) developed a direct design method, the so-called stiffness reduction method, that takes into account the detrimental influence of imperfections and effect of distributed plasticity on the buckling resistance of beam-columns. Authors of this paper refined the so-called General Method of Eurocode 3 (2005) in their study of Gizejowski et al (2019b). The study was referred to wide flange double-tee beam-columns of the size ratio h/b ≤ 1.2 (symbol H was used for such section identification).…”

Section: Introductionmentioning

confidence: 99%

Modern Trends in Research on Steel, Aluminium and Composite Structures

Giżejowski¹,

Kozłowski²,

Chybiński³

et al. 2021

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involvement in the organisation of the 14th International Conference of Metal Structures is perceived by me as a distinction, but also as a proof of trust in the University. This activity fits perfectly the University mission to educate at all levels of higher education and in lifelong learning programs in close connection with scientific and research development. Nowadays, Poznan University of Technology offers education at 9 fac ulties, covering a total of 33 fields of study. Nearly 16,000 students study here and over 1,300 academic teachers cater to their education. The didactic offer of Poznan University of Tech nology covers the most important fields related to modern technology with a recently launched program in Artificial Intelligence; it is also well adapted to the requirements of both domestic and foreign employers. High-quality scientific research is an integral element of Poznan University of Technology strategy, characterized by scientific achievements of its employees who published more than 2,000 scientific contributions: highly ranked articles, monographs, textbooks and other publications. The total number of PUT Library collections is over 450,000 volumes. Among numerous achievements, the University is proud of the H2020 Marie Sklodowska-Curie Global Fellowships and ERC grants. Furthermore, our sci entists are among the authorities of the Polish Academy of Sciences (9 representatives) and are also members of numerous international scientific societies. According to Shanghai Rank ing 2020 edition in disciplines, PUT was classified among the best 400 universities in the world in Mechanical Engineering. Also, we are ranked by students as the most popular university in Poland according to the Ministry of Science and Higher Education in the 2020/2021 academic year.Owing to EU funding, recent years have introduced the development of research infrastruc ture at the Warta university campus. In 2020 our University also became a leader of European University EUNICEa project funded by the European Commission with a budget of more than 6 million EUR. Our university consortium partners originate from Belgium, Germany, France, Finland, Italy and Spain. EUNICE's main goal is to build a common European Uni versity of the future, and prepare its structure and management design within 3 years. EUNICE is aspiring to provide a high-quality digital learning, offering flexible and multidis ciplinary studies, as well as opportunities for students and staff for international exchange and networking. EUNICE will develop modern and innovative pedagogical methods and provide enhanced student services, in terms of enrolment, recognition, student counselling and guid ance aimed at boosting the employability of all students. Just recently, PUT was also granted by the European Commission a follow-up scientific project REUNICE. This H2020 strategic project for the European University Alliance EUNICE aims at aligning its education, research and innovation strategies through an ambitious and transformative agenda.Therefore, I am ...

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Local Instability and Deformation Control of Steel Roof of Factory Building in a Smart City

Liu,

Xu,

Wang

et al. 2024

Journal of Testing and Evaluation

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The traditional control methods of instability and deformation of steel structure neglect the analysis of its natural vibration characteristics, which lead to the poor effect of hysteretic vibration of steel structure nodes, and the stability optimization of steel structure is not ideal. Therefore, a new method to control the local instability and deformation of the steel roof is proposed. According to the steel structure composition of the upper door rigid frame and the connection mode of the frame beam and column, the roof steel structure characteristics of the workshop are analyzed. Multi-order natural frequency method is used to obtain the cumulative modal mass contribution rate of steel structure and analyze the natural vibration characteristics of steel structure. Based on the characteristics of natural vibration and element transfer matrix, the local instability control method of roof steel structure is designed. Simulation of strong vibration, using space analysis of tall-building with wall-elements (SATWE) software analysis of strong vibration under elastic load state, to obtain the external deformation of steel structure, under simulation of vibration deformation control model. Taking a chemical plant as an example, a finite element model was established to simulate the vibration wave, and the numerical simulation results of plastic deformation resistance of steel structure were analyzed. The experimental results show that the proposed method can effectively enhance the stability of steel structure and reduce its deformation degree.

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Out-of-plane buckling resistance of rolled steel H-section beam-columns under unequal end moments

Cited by 6 publications

References 32 publications

Experimental investigations of the flexural‐torsional buckling resistance: Steel rolled I‐section beam‐columns under moment gradient

Experimental investigations of the flexural‐torsional buckling resistance: Steel rolled I‐section beam‐columns under moment gradient

Modern Trends in Research on Steel, Aluminium and Composite Structures

Local Instability and Deformation Control of Steel Roof of Factory Building in a Smart City

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