Lateral-torsional buckling of box beam with corrugated steel webs

doi:10.1007/s11771-019-4122-0

	Lateral-torsional buckling of box beam with corrugated steel webs
	Feng, Yu-lin 2; Jiang, Li-zhong 1,2; Zhou, Wang-bao 1,2; Han, Jian-ping 3
刊名	Journal of Central South University
	2019-07-01
卷号	26 期号:7 页码:1946-1957
关键词	Bending moments Numerical methods Potential energy Shear flow Stiffness accordion effect Analytical calculation ANSYS finite element method Axial compression stiffness Corrugated steel webs Critical bending moment Kollbrunner-Hajdin method Lateral-torsional buckling
ISSN号	20952899
DOI	10.1007/s11771-019-4122-0
英文摘要	Corrugated steel web is folded along the longitudinal direction and has the mechanical properties such as axial compression stiffness corrugation effect, shear modulus corrugation effect, similar to that of an accordion. In order to study the lateral-torsional buckling of box beams with corrugated steel webs (BBCSW) under the action of bending moment load, the neutral equilibrium equation of BBCSW under the action of bending moment load is derived through the stationary value theory of total potential energy and further, along with taking Kollbrunner-Hajdin correction method and the mechanical properties of the corrugated web into consideration. The analytical calculation formula of lateral-torsional buckling critical bending moment of BBCSW is then obtained. The lateral-torsional buckling critical bending moment of 96 BBCSW test specimens with different geometry dimensions are then calculated using both the analytical calculation method and ANSYS finite element method. The results show that the analytical calculation results agree well with the numerical calculation results using ANSYS, thus proving the accuracy of the analytical calculation method and model simplification hypothesis proposed in this paper. Also, compared with the box beams with flat steel webs (BBFSW) with the same geometry dimensions as BBCSW, within the common range of web space-depth ratio and web span-depth ratio, BBCSW’s lateral-torsional buckling critical bending moment is larger than that of BBFSW. Moreover, the advantages of BBCSW’s stability are even more significant with the increase of web space-depth ratio and web depth-thickness ratio. © 2019, Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	Central South University of Technology
WOS记录号	WOS:000478773000023
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150522]
专题	教务处（创新创业学院）
作者单位	1.National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha; 410075, China; 2.School of Civil Engineering, Central South University, Changsha; 410075, China; 3.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Feng, Yu-lin,Jiang, Li-zhong,Zhou, Wang-bao,et al. Lateral-torsional buckling of box beam with corrugated steel webs[J]. Journal of Central South University,2019,26(7):1946-1957.
APA	Feng, Yu-lin,Jiang, Li-zhong,Zhou, Wang-bao,&Han, Jian-ping.(2019).Lateral-torsional buckling of box beam with corrugated steel webs.Journal of Central South University,26(7),1946-1957.
MLA	Feng, Yu-lin,et al."Lateral-torsional buckling of box beam with corrugated steel webs".Journal of Central South University 26.7(2019):1946-1957.