Research on buckling failure mechanism of U type steel support loaded deviating longitudinally
Abstract：Classified the invalid support with its mechanism and manifestation,the management measures were put forward.The buckling failure cannot be explained reasonably with the 2D Model,however,which occurs widespread in one coal mine of Huainan Group.A new deviating longitudinal 3D model was preliminarily analyzed.By ANSYS 10.0,we get appealing simulation results on the mechanism,stress distribution,and load magnitude in the partial and integral buckling failure.The studies show that appropriate dimensional roof-rock＇s brute force on pinnas is an precondition of the failure.Further,the deviating longitudinal load plays an accelerating deformation role on the transformation,which should be paied more attention to in deep and cracked roadway support design.
Keywords：U type steel supportdeviating longitudinal loadbuckling failureANSYS finite element
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)