Stability Analysis on Large-span Steel Tubular Truss Based on Finite Element Simulation

To instruct the actual engineering application, we use finite element software to establish model and give a series of static analysis on large-span steel tubular truss structure. Both of nonlinear buckling analysis and eigenvalue buckling analysis are adopted by parameter setting of the structure. Then, by linear buckling, geometric nonlinear stability and nonlinear stability analysis we achieve the relation curve of critical load and displacement. The experimental results show that the method considering geometric nonlinearity and material nonlinearity can reflect the actual loading ability of structure better, so the truss structure has certain safety reserve.