Several New Large-span Prestressed Flat-panel Grid Structure Analysis And Research

The current structure of the world's space development,the growing demands on the one hand is the application of spatial structure,on the other hand,should try to reduce the cost structure of the project.In such an environment,through a large amount of scientific research and engineering practice use of modern technology and large-span prestressed space grid structure formed by combining prestressed grid structure - a modern hybrid spatial structure(prestressed flat grid structure) can increase the stiffness of the entire structure,reduce deflection structure,improve internal force distribution and reduce stress peak,and its small investment,the technology has obvious economic effects,and it was a widely used and the prospects for the development of large-span space structure.But any structure is not perfect, are bound to have their own strengths and areas for further improvement.Combine this topic prestressed flat grid of mechanical and structural characteristics,through the introduction of foreign technology "Broken Line cable layout indoor diagonal flat-panel grid in vitro prestressed" improvements in flat-panel grid of parallel grid in two orthogonal directions configuration prestressed cables and imposed by the form of a new type of spatial structure ---- New large-span prestressed flat grid structure.This topic spatial structure of this new type carried out in-depth theoretical analysis and simulation experiments on a new type of large-span prestressed structure of the flat-panel grid finite element calculation and analysis methods, and use of finite element software ANSYS new large-span prestressed flat grid structure of the linear and nonlinear analysis,and through MSTCAD will introduce a new type of large-span prestressed plate in a grid and the same plane with their size,mesh size,grid height,bearing bear the same conditions and constant,live load of conventional grid were compared.The ultimate proof of theory and practice,these types of structural stiffness of the new space,reasonable force,significant economic benefits,the applicability of strong,in a large-span structure worthy of a new type of space promote the use of the structure.