Studies On The Static And Stable Properities Of The Cable-truss Structure In A Ice-skating Hall

Sicne 1950's architects introduced the cable-stayed bridge into the civil engineering the cable-truss spatial structure developed quickly. This large-span spatial structure is a new hybrid type belongs to cable structure system. This new system has reasonable mechanical properties, favorable economic benefits and graceful architectural sculpt, that enriches big spatial structure system. Probing into this new system is striding forward high-new architectural techniques. In the paper the methods used in the analysis of cable-truss structure are expounded. And the static and stable properties of the cable-truss structure is a ice-skating hall are discussed.Two methods often used in analyzing cable-truss are analytic method, and finite element method. In the paper, the analytic solution of cable-truss is deduced, and tangent stiffness matrixes of space bar element and space beam element are given. In this dissertation, nonlinear finite element theory is introduced. The difference between Total Lagrange formulation and Updated Lagrange formulation is discussed. So, in the analysis of the static properties of the cable-truss, on the basis of the process which the truss undergo, three states-zero equilibrium states, intial equilibrium states and load equilibrium state-in the process of analysis of the trusses are defined. In the paper, the influence of the prestress in the stayed cables on the prosperities of the truss is discussed. And the linear static results of the truss are compared with the nonlinear ones.The linear limit stability loads of this structure are discussed in the model, the stability of this structure is discussed. At last, some important conclusions are reached.