Antiseismic property analysis of long-span arch truss structure of coal reserving shed

Take the three circular steel tube arch truss reserving shed as the research object,using the finite element software SAP2000,analyzed the dynamic characteristics and seismic property of steel tube arch truss which the rise to span ratio is 0.35 and the span is 94 m,obtained the structure formation characteristics,internal array frequency and the internal force distribution of the structure under action of earthquake.The results show that: the bearing capacity of the structure meet the requirement of using,but the stress concentrated at both ends of the arc tangent,also point out the weak part.This research puts forward the theoretical and technical reference for the design of arch truss.