Structure Design And Analysis Of A Large Theatre Engineering

The peculiar shape of a theater building adds to the beauty of a city, but it alsobrings difficulty to structure design. Theatre building shape is complex and irregular,because it’s bottom commonly used for reinforced concrete structure and the upperusually made of steel structure roof. Theatre building is generally consisted of anauditorium, a stage and accessory occupancies. The auditorium and the main stage arerelatively hollow and spacious with higher height differences which is also seriouslylack of floor slab. Each part of weak position is prone to relative vibrate, when thestructure suffers from earthquake. Especially in the earthquake zone, its structural style,layout and the earthquake-resistance are the problems need studying in theatreconstruction.In this paper, the three-dimension dynamic response of a typical building and largespan roof truss under earthquake is analyzed by PKPM, SAP2000and MIDAS-Gen,taking the huxi campus of Chongqing university student activity center as an example,which is a grand theatre structure. Some useful conclusions are acquired. The mainideas and findings are as follows:①This paper has analyzed construction characteristics of the Grand Theatre andits influence on the structure design. The characteristics of stressed deformation isanalyzed concerning the frame structure system, frame wall structure system andframe-shear wall structure system. At the same time, this paper also demonstrates therationality of the Grand Theatre structure adopting frame-shear wall structure system.②This paper has established computing modeling by PKPM and seismiccalculation using the response spectrum method, and analyzed the control parameters ofthe structure. For the grand theatre is a complex structure, this paper uses SAP2000tosupplement the modeling analysis, compared with SATWE, to verify the exactness andeffectiveness of the SATWE computing results. At the same time, it also uses timehistory analysis to supplement caculation. The results show that the SATWE vibrationmode decomposition response spectrum method can be used in the theater structure.③In order to overcome the limitation of elastoplastic analysis when hited byrarely met earthquake, this paper analyzes the elastic analysis software of the structureunder the basic intensity with the purpose of getting the second and third level seismicfortification more effectively. We can find that seismic design method can be well referred and can take the place of the elastoplastic analysis.④. MIDAS-Gen is adopted to analyze the static effects and reaction of large spanroof plane truss. SATWE and MIDAS-Gen are used to analyze cooperative work oflong-span roof plane steel truss and the concrete structure analysis. Researches showthat the steel truss roof effect on the stress of the whole structure can’t be ignored. Forgeneral engineering, the simplified steel girder model can meet the needs of projectdesigns. However, overall modeling analysis of complicated structures should be carriedout.