Seismic Response Analysis Of Steel Pipe Arch Roof In Stadium

Earthquake ground motion is a complex multi-dimensional movement. In essence,ground motion is in the changes of space. But a lot of people use the one-dimensionalmethod to assess structure under seismic excitation. On the basis of the investigationbackground mentioned above, the text investigates on the one-dimensional andmultidimensional seismic reaction analysis of the steel pipe arch structure using themethod of time history from various aspects, and following achievements have beenobtained:1) The structure model of steel pipe arch was established and the dynamiccharacteristics was carried out.2) Studying on the one-dimensional dynamic response of long large-span spatialgrids structures under seismic excitation effect. During the research of one-dimensionalcase, the influence on overlong large-span spatial structure by using different directionswave passage effect. The text has made a conclusion of the similarities and differencesof the analysis in three different directions.3) Studying on the multi-dimensional dynamic response of long large-span spatialgrids structures under seismic excitation effect. Summary of three kinds seismic waveanalysis of similarities and differences of structure response, summarizedmultidimensional structures under earthquake response of law.4)Summarizing the dynamic response of structures under one-dimensional andmultidimensional seismic excitation，an apparent result has been obtained.The results show that a simplified model steel arch roofing paper usesMIDAS/GEN established in good agreement with the actual project results, and thecalculation is simple, easy to use. Get more accurate the frequency、deformation、internal force distribution rule structure. The results can provide the necessary reference for subsequent similar projects.