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In this article,we mainly studied the classifying of structure wind-resistant categories about large-span cylindrical structures with span 80m,firstly wind pressure loads are obtained by wind tunnel test while mean response, background response and resonant response of wind-induced response can be calculated by different procedures based on analytical methods, then systematic and plentiful parameter analysis in the range of engineering application can be executed by changing some parameters of wind loading and arch structures, such as mean wind velocity, terrain roughness type, roof mass, rise-span ratio and section properties of the arch, studying the rules about three response components on the basis of parameter analysis, At the same time,changing the structural parameters and ground motion parameters (fortification intensity) to caculate the seismic response. For the same structure in the same area, calculating the distribution of the two kinds of responses to find out under what conditions, wind-induced response can be ignored and under what conditions the earthquake response can be neglected, then according to the idea and cooresponding methods that classifying large-span roof structures into several wind-resistant types, the categories about large-span cylindrical structures can be estsbalished,which can be part of our norms.
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