The Application Research Of High-level Steel Frame-support Structure System In High-intensity Area

Braced-frame steel structure in high-rise and super-tall structures is becoming more and more common, the layout modes of supports are one of the influencing factors which affect this kind of structures, so the research on the layout modes of supports is very important for the application of this kind of structures in high intensity region areas.This thesis first set up a plane model which is similar to the original model for analysis, lay out eighteen kinds of supports in the form of large and small types which have the same section area. The models used for analysis in frequency earthquakes are manly on (â… ):models with large supports which has the angle of 45-52 degree; (â…¡):models with cross section supports with the angle of 26.6-45 degree for the small supports schemes; (â…¢) models with chevron pointing supports with the angle of 26.6-57 degree for the small supports schemes. The results of these analysis were compared through economy, structural nature and architecture used functions aspects.The forth chapter of this thesis also undertakes elastic analysis under frequency earthquakes of 4 nonlinear support modes which has the same average angle as the line support because the layouts of supports are not always in line in real application. The results of these analysis can be concluded as following:(â… ):If you must choice one of the four nonlinear support modes, it is best to choice the second with the line modes, if you must choice one, it is best to choice the second only. (â…¡):When the type of line supports are not allowed to use in actual situations, it is recommended to used the mode which only change one angle, such as the type of 2; (â…¢) If the angel of nonlinear supports are properly controlled, they can be as effect as the type of line supports.