Study On The Overall Stability Of Thin-walled Structures With Horizontal Linkages

Along with the advance of social economy and the continuous development ofarchitectural technology, compared to the concrete structure, steel structureconstruction labor time is shorter, building beautiful shape, has a large studio and thecharacteristics of easy to split, is widely used in industrial and civil building structureform. For common thin-wall steel components, steel components such as C and grooveinstability easily. External load to a certain extent, bar will lose their original balance.In order to enhance the out-of-plane stiffness of open thin-walled components, improveits overall stability, usually take measures in the construction of the openings of thetransverse connection components, such as batten plate, etc. Such a setting in the opensection of the lateral contact components, can significantly reduce the sectionalwarping, helpful for reasonable utilization of resources and better economy.Based on the open thin-walled components in the transverse connection wasanalyzed, the component can be divided into strengthening component and the openthin-walled bar. Just around the opening part adopts the assumption and transformationof cubic spline function to describe the longitudinal warping displacement assumption,will strengthen the artifacts can be seen as the elastic support, based on the overallstability analysis calculation model of thin-walled components.This article does not choose the flat section assumption and Kurt brunner-Harding to component longitudinal warping displacement assumption, and selects theconversion of cubic spline function to simulate the longitudinal buckling displacement,wrote in displacement component of total potential energy, through the Legendretransformation to the introduction of the dual variables, is derived through the lateralcontact to strengthen the overall stability analysis of thin-walled components ofHamiltonian dual calculating system, using the MATLAB language to compile theends of the boundary value problem of the precise integration method and dichotomysolving different cross section under different support type precise numerical solutionof critical load. The end of this article selected the critical load of steel componentsrelated example is verified, you can verify the method in this paper analyzes theapplicability of the thin-walled steel with batten plate components, can work for the early stages of the project design to provide a new reference.