Liu M.,Hubei Engineering University |
Chen Q.,Hubei Engineering University |
Zhang Q.,China Railway Major Bridge Reconnaissance and Design Institute Group Co.
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | Year: 2014
Local buckling under shear of steel-concrete composite beam webs considering both the rotationally restrained of steel-concrete composite-flange was presented. The upper flange of steel-concrete composite girder was connected together with shear stubs, and the boundary conditions were elastically restrained against rotation actually. Based on the questions above, a Rayleigh-Ritz variational method was used to solve buckling eigen-value problem, and an explicit buckling coefficient of web subjected to shear was obtained. Later, a formula of steel-concrete composite flange elastic rotational coefficient was developed based on the elastic buckling theory. A finite element model was built and parametric study of the buckling coefficient formula developed by this document was carried out. The theoretical results are in good agreement with the finite-element local buckling analyses of steel-concrete composite I-girder and transcendental classical solutions.