A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lateral Torsional Buckling Strength of High-Strength Steel Beam Under Various Moment Gradients
To date, many research studies related to the Lateral Torsional Buckling (LTB) behavior of Normal Strength Steel (NSS) beams have been conducted, and therefore, the guidance for calculating the LTB strength of NSS beams is quite comprehensive in the existing design codes. As the application of High-Strength Steel (HSS) having yield strength more than 690 MPa or 100 ksi has become increasingly popular for its excellent ratio of strength to weight, many design standards allow the use of HSS with grades up to 690 MPa. However, AISC 360–22 does not endorse the use of HSS due to the lack of adequate experimental or numerical investigations that necessitate the assessment of the LTB performance of HSS beams. Thus, this research numerically examines the LTB capacity of HSS I-shape beams under various moment gradients. A detailed three-dimensional finite element (FE) model of HSS I-beams was developed in ABAQUS, considering both material as well as geometric nonlinearities. As HSS exhibits different material and residual stress characteristics than NSS, experimentally measured material properties and residual stress patterns specific to HSS were integrated into the model. Initially, the established FE model underwent validation through the utilization of preexisting test data, after which it was utilized for carrying out a comprehensive and in-depth parametric investigation. In the parametric study, a wide range of parameters, including the grades of steel, length of the beam, and linear and nonlinear moment gradients, were taken into account to ascertain the LTB strength of HSS beams. Finally, the extracted numerical findings were contrasted with the values acquired from the LTB strength equations of AISC 360–22.
Lateral Torsional Buckling Strength of High-Strength Steel Beam Under Various Moment Gradients
To date, many research studies related to the Lateral Torsional Buckling (LTB) behavior of Normal Strength Steel (NSS) beams have been conducted, and therefore, the guidance for calculating the LTB strength of NSS beams is quite comprehensive in the existing design codes. As the application of High-Strength Steel (HSS) having yield strength more than 690 MPa or 100 ksi has become increasingly popular for its excellent ratio of strength to weight, many design standards allow the use of HSS with grades up to 690 MPa. However, AISC 360–22 does not endorse the use of HSS due to the lack of adequate experimental or numerical investigations that necessitate the assessment of the LTB performance of HSS beams. Thus, this research numerically examines the LTB capacity of HSS I-shape beams under various moment gradients. A detailed three-dimensional finite element (FE) model of HSS I-beams was developed in ABAQUS, considering both material as well as geometric nonlinearities. As HSS exhibits different material and residual stress characteristics than NSS, experimentally measured material properties and residual stress patterns specific to HSS were integrated into the model. Initially, the established FE model underwent validation through the utilization of preexisting test data, after which it was utilized for carrying out a comprehensive and in-depth parametric investigation. In the parametric study, a wide range of parameters, including the grades of steel, length of the beam, and linear and nonlinear moment gradients, were taken into account to ascertain the LTB strength of HSS beams. Finally, the extracted numerical findings were contrasted with the values acquired from the LTB strength equations of AISC 360–22.
Lateral Torsional Buckling Strength of High-Strength Steel Beam Under Various Moment Gradients
Lecture Notes in Civil Engineering
Alam, M. Shahria (editor) / Hasan, G. M. Jahid (editor) / Billah, A. H. M. Muntasir (editor) / Islam, Kamrul (editor) / Rahman, Sazid (author) / Azam, Wassi ul (author) / Dipta, Sakib Ahmed (author) / Kabir, Md.Imran (author)
International Conference on Advances in Civil Infrastructure and Construction Materials ; 2023 ; Dhaka, Bangladesh
2024-08-22
9 pages
Article/Chapter (Book)
Electronic Resource
English
Lateral torsional buckling , High-strength steel beam , Finite element analysis , Nonlinear analysis , AISC 360–22 , Residual stress Engineering , Construction Management , Geotechnical Engineering & Applied Earth Sciences , Structural Materials , Building Construction and Design , Geoengineering, Foundations, Hydraulics
Lateral-torsional buckling strength of welded I-girders under moment gradient
| Tema Archive | 1986
Local buckling behaviour of high strength steel tubular beams under moment gradients
| Wiley | 2023
Lateral-Torsional Buckling Strength and Design of Steel Arches
| British Library Conference Proceedings | 2011
Flexural Strength for General Lateral-Torsional Buckling
| Online Contents | 2007