Structural Mechanical Analysis On Aluminum Alloy Dome Of Caofeidian Coal Storage

Aluminum is a promising metal in long-span spatial structure owing to its lightweight, durability and ductility. Aluminum alloy structure enjoys aesthetic appeal,light weight, free maintenance, long service life and has a good comprehensiveeconomic benefit.This paper introduces two kinds of reticulated shells based on Caofeidian DigitalCoal Storage Base whose mechanical properties are compared by two finite elementsoftware—MIDAS Gen and ANSYS.Firstly, this paper illustrates research status at home and abroad of aluminumreticulated shells. Based on design conditions and load conditions, the author built thenumerical model of vierendeel dome and single layer dome respectively by two finiteelement software—MIDAS Gen and ANSYS.Then static behavior analysis of the two kinds of reticulated shells was carriedout by MIDAS Gen considering temperature effect. The stress level of members,stability of members and node displacement are studied.Eigenvalue buckling analysis and nonlinear buckling analysis (geometricnonlinearity and material nonlinearity) were carried out by ANSYS to identifyinstability mode and critical load factor. The stiffness distribution and weak areas ofthe two kinds of structures were compared. Both structures had enough stable bearingcapability.The dynamic performance analysis including the natural vibration properties andthe revitalization of decomposition response spectrum analysis was carried out toascertain that the two kinds of structure have enough bearing capacity under theearthquake action.Stiffness tests of the plate joint on in-plane, out-plane stiffness properties werecarried out to obtain stiffness of the joint in the elastic range.