Cylinder Composite Shell Structure Vertical Seismic Analysis

Since the large-span composite structure has lots of eminent merits, for example, not only it has very great rigidity and its ability to resist the earthquake is great, but also it combine the load-bearing function with the guarding function, so the strength of the concrete and the steels can be made best of and it can save steels and reduce the cast, either the domestic or the foreign researchers place great emphasis on it and get the great achievements. It is a big problem to steel- concrete shell that the tempory template is built and detached, at the same time, the engineering cost is high for the steel reticulated shell, the new composite shell has been developed quickly for this kind of structure, which can conquer the above problems. In recent years, many scholars have studied seven kinds of composite reticulated shells. The structurestyles, section forms, mechanical behavior, research keys as well as the ways of research are discussed.Large-span Structure is very sensitive to the role of the structure of the earthquake. Follows the increase of the span-rise structure, the vertical seismic effect on structure is more obvious.This paper to the double-layer-cylinder composite shell structure has carried on the preliminary discussion about the staic analysis,so as to know the stress and displacement.At the same time,we can make the dynamical equation about the structure and utilize the different computational method to carry on the solution.Using the large-scale finite element procedure ANSYS,this paper analyze structure under the vertical earthquake,has obtained the structure's distortion and the stress characteristic,proposes the reference for the design work.