Stability Performance Analysis of a Arched Space Tube Truss Structure
Long span space structures often cause serious security risks due to the lack of overall stability,the multi-parameter digital analysis method is used to analyze and study the overall stability performance of arch space tube truss structure in a practical project.The influences of initial defects,important members and geometric parameters on the stability of the structure were explored.The re-sults show that the critical load coefficient of the structure is 6.03 under the adverse combination condi-tions,and the structure has good stability.The structure is less affected by initial defects,and its sta-bility coefficient changes by less than 4％.The structure still has strong bearing capacity even if the ob-lique bar is unstable.Considering the double nonlinear effect,increasing the aspect ratio and outside di-ameter ratio within a certain range can significantly improve the stable bearing capacity of the structure.Furthermore,the design suggestions of controlling the aspect ratio between 0.5 and 1 and the outer di-ameter ratio around 0.5 are given.The research results of this paper can be applied to the design and construction of similar structures in the future.
arched space tube trussstability performancenonlinear analysisinfluencing factors
万方数据
维普
