Analysis On The Carrying Capacity Of Multilayer High Storage Rack

As a kind of high storage density device which can be structurally adjusted according to the product specification,assembled type storage racks are favored by major storage industry or production enterprises.As market demand changes and product specifications gradually diversify,sometimes the original storage rack structure is readjusted to store different specifications of products.After the adjustment of the storage rack structure,its carrying capacity may change.Due to the complexity of the problem,a uniform calculation standard has not yet been formed.This topic is based on the structural adjustment of an enterprise's assembled type storage racks as the research object.ANSYS is used to carry out the mechanical performance of storage racks component and beam-column joints,the static and dynamic performances of overall structure,the main research contents are as follows:The carrying capacity of the individual components such as the floor plate,the center beam,the side beam,the center beam joints and the side beam joints under static loading was studied to determine the maximum carrying capacity of the storage rack monolayer.In view of the fact that continuous and equal span assembled storage racks are too large in the longitudinal direction,the deformation laws of storage racks with different spans are studied.It is recommended to perform numerical simulation analysis on continuous and cross-assembled storage racks,a valid segment of more than five spans can be selected to build a finite element model instead of the overall structure.The effects of factors such as the connection of beam-column joints,storage rack height,lateral oblique support structure arrangement and cargo placement position on the load-carrying capacity of the storage rack were studied.Corresponding improvement measures are proposed for the results caused by different factors.Using eigenvalue buckling analysis and nonlinear buckling analysis method,the stability of the overall storage rack structure was studied to determine the critical carrying capacity and buckling form of the storage rack.Response spectrum analysis and time-history analysis were used to analyze the seismic performance of the entire storage rack structure and the weak position of the storage rack under dynamic load was determined.At the same time,the difference in seismic analysis was compared between the two methods.