Analysis On The Displacement And Stress Of Large Flat Trusses Construe Process

In recent years the national economy has developed rapidly, dimensions of various project constructions expended day by day. Especially some major project, include long-span-structure high-rise-building and large complex structure. The complexity and enlargement of structure has brought about many problems to the security of building. Those problems lead negative influence to the structure. technical personnel pay more attention to the mechanics problems of the process of construction. To give a guarantee to the period of project from build to complete, the steel structural engineering project analysis has become an important part in structure design, and it is significant to ensue the security of construction process.ABAQUS programs were used to investigate the behavior and stress of trusses slide construction process and trusses unload process. Elastic analysis was conducted, and ABAQUS in which user material was embedded was used for elastic analysis. In the slide process analysis, elements'stress and displacement could be obtained, that would provide reliable to the structure; in unload process, appropriate unload sequence was adopted, It brought a positive influence to the final shape of the structure, and the index was meet the code. Through this research, we obtain some useful conclusions, as well as subsequent research has provided some theoretical support.