Earthquake Resistance Performance Analysis Andits Construction Simulation Of Large Span Steel Structure

The construction level of country and region construction as an important symbol that usually measured based on the development degree of large-span spatial structure, it also reflects the degree of civilization development anywhere, so the theory and application of large-span spatial structure has drawn more and more attention around the world. In recent decades, many constructions using large-span space steel grid structure have built in our country. the widely using of large-span steel space truss structure has become the research and development direction in building industry.The topic of this research mainly references the research literature domestic and overseas, through using the finite element analysis software MIDAS/Gen, the frame model of large-span steel space truss structure is established based on a large-span steel space truss structure practical engineering. Here the three groups seismic wave were used to affecting on the frame model and it rack dynamic response was analyzed by time history method. The results prove the structure is safe and reliable. The stability calculating model of large-span space steel under process of construction is established based on entity modeling method, then displacement and strain of structure with the changing of working condition and construction progress is analyzed, based on the measured values compared with the results of simulation analysis, Guide structure in construction process to the implementation of the security and guarantee the design requirements of structure.According to the research results, through analyzing the frame model under earthquake excitation seismic affecting, the maximum internal force and displacement of the structure members could meet the specification requirements in the level of Y, and the seismic performance of whole structure is good, structure design has reached the predetermined seismic fortification goal,then sums up the requirements of space truss structure seismic structural and local distribution regularity of the three layer network frame. Through simulating structure construction process, the component of the maximum internal force and deformation both reaction in the process of ascension 1 condition, the structure design and construction meet the safety requirements of specification. Here the actual project as an example, the seismic performance analyzing of large-span space steel frame structure and force of the components in the construction process were studied, the results could provide reference for the design and application of large-span steel space truss structure.