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Strength Analysis of I-Beam under Biaxial Eccentric Load
Perfect design need make structure stable and wouldn’t destroyed, when earthquake or strong wind happened. When an eccentric load on a steel structural member, the force acting on the member is not only the axial load. It would have eccentric behavior for the structural member and also have additional bending moment caused by the eccentric load. In addition, due to the different lengths of the members, the strength of the members needs to be evaluated according to the Flexure-Compression equation of the axial force and the bending moment. In the analysis and calculation, the relationship between the components of the axial force, it is necessary several times during the analysis to deduce the critical value that the component can withstand, to ensure the safe bearing range. In this study, specification formulas of AISC (1989, 1999, 2017) double-symmetrical I-beams are studied and integrated, through the calculation methods-LRFD and ASD. Study expects that through the analysis and integration of the I-beam force behavior suggestions, users can have a reference choice when designing. Through the analysis, it is found the value calculated by ASD will be more conservative than LRFD, and the results calculated by LRFD in 1999 and 2017 are not much different. When calculating the axial force, axial compression is lower in 1999 due to use of different reduction factors (0.9 and 0.85). And the analysis of the three versions of AISC (1989, 1999, 2017), the intensities calculated under the same reference conditions, AISC (2017) value calculated using the LRFD method was the highest.
Strength Analysis of I-Beam under Biaxial Eccentric Load
Perfect design need make structure stable and wouldn’t destroyed, when earthquake or strong wind happened. When an eccentric load on a steel structural member, the force acting on the member is not only the axial load. It would have eccentric behavior for the structural member and also have additional bending moment caused by the eccentric load. In addition, due to the different lengths of the members, the strength of the members needs to be evaluated according to the Flexure-Compression equation of the axial force and the bending moment. In the analysis and calculation, the relationship between the components of the axial force, it is necessary several times during the analysis to deduce the critical value that the component can withstand, to ensure the safe bearing range. In this study, specification formulas of AISC (1989, 1999, 2017) double-symmetrical I-beams are studied and integrated, through the calculation methods-LRFD and ASD. Study expects that through the analysis and integration of the I-beam force behavior suggestions, users can have a reference choice when designing. Through the analysis, it is found the value calculated by ASD will be more conservative than LRFD, and the results calculated by LRFD in 1999 and 2017 are not much different. When calculating the axial force, axial compression is lower in 1999 due to use of different reduction factors (0.9 and 0.85). And the analysis of the three versions of AISC (1989, 1999, 2017), the intensities calculated under the same reference conditions, AISC (2017) value calculated using the LRFD method was the highest.
Strength Analysis of I-Beam under Biaxial Eccentric Load
Lecture Notes in Civil Engineering
Kang, Thomas (editor) / Hsu, Wei-Hsun (author) / Chung, Shu-Ti (author) / Laio, Wei-Rui (author) / Hsu, Wei-Ting (author)
International Conference on Civil Engineering and Architecture ; 2022 ; Hanoi, Vietnam
Proceedings of 5th International Conference on Civil Engineering and Architecture ; Chapter: 88 ; 1147-1153
2023-10-01
7 pages
Article/Chapter (Book)
Electronic Resource
English
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