Construction Simulation And Relevant Factors Analysis Of New Suspend-dome Structure Of Badminton Gymnasium For 2008 Olympic Games

With the flourishing development of economics of our country, the scale of many types of engineering construction are expanding and the amount of many important projects such as high-rising building, long-span building, super-span building, super-high rising building and some other large scale and complex structure system bring out the complexity and all kinds of new structure have mushroomed to adapt to the actual needs of the various projects. Suspend-dome structure is the product of modern architecture science and technology. Suspend-dome structure is new structure style derived from the combination prestressed technology and space structure, has a good structural behavior.At the same time, for the suspend-dome structure, the size of the project and the expansion of the complex structure has brought the complexity of the construction process and security issues. At present, the research staff of the construction of such structures and construction technology demonstrated in the course of numerous mechanical problems more seriously, the process of structural construction design has become an important part of structure design. The suspend-dome structure of the badminton gymnasium for 2008 Olympic Games is the largest span of the suspend-dome structure at present in the world, Theoretical Study and technological innovation demands highly, the process of construction is very complex. This paper combines theoretical study and technological innovation with the construction of the Olympic project.This paper summarizes the suspend-dome structure research results and characteristics of domestic and foreign. Introduced nonlinear finite element theory and solving methods used in the construction process of Suspend-dome structure. The new suspend-dome structure of the badminton competition gymnasium roof for 2008 Olympic Games and a self-built model was taked as simulation object, finite element analysis software ANSYS and structural finite element analysis design software MIDAS were used in finite element model Simulation analysis process of the two models.In the process of construction simulation, support constraint conditions , welding residual stress of net shell , stiffness and rigid zone of net shell welding hollow ball joint were considered as contribution factor to joints spring value and internal forces of net shell.The following conclusions were got with the results of simulation analysis and comparative analysis. In the course of construction, suspend-dome structure requires low support constraint conditions. As a kind of large-span steel structure, Suspend-dome structure is more sensitive to temperature, therefore spring value and internal forces of structure have changed a lot under the influence of the welding residual stress in the course of construction. Stiffness and rigid zone of net shell welding hollow ball joint was also an important influencing factor in the construction process, therefore a new composite modeling method was used to accurately simulate the effect of rigid zone of welding hollow joints. At the same time, the reason of great joint friction was find out through the analysis of existing cable-strut joint, more importantly a simple and more convenient construction new cable-strut was invented.The research results of this paper directly applied to the construction of the new suspend-dome structure of the badminton competition gymnasium for 2008 Olympic Games.