Research On The Dynamic Behavior Of Latticed Shell Structures Under Earthquake Excitation And Suitable Design Principle

Static analysis of the latticed shell structures have been intensively researched at the present time.but research on the dynamic have not enough.if the dynamic behavior of the grid structure the same as the latticed shell structures?if it is the important to vertical earthquake eacition all of the large-span spatial structures?impact on all of parameter,how to distributing on endogen force confficient of the earthquake excition?reference on endogen force confficient of the earthquake excition?we will further studies solves on the engineering practicd.There are fregueency spectrucm and complexly mode about the latticed shell structures,adopt to the surperpostion response spectrum method and research on the earthquake-resistance.in this paper,analysing of dynamic parameter use self-programming at large-scale,about kiewitt latticed spherical shell and cylindrical-latticed shell of pyramid.Considerations in diffients of span,retio of rise to span,resistance level and so on,impacted on the natural frequency of vibration.at the same time,relating all kinds of paremetric variation regularity.In design of the earthquake-resistance,the dominated is levelearthquake excition or vertical-earthquake excition about kiewitt latticed spherical shell and cylindrical-latticed shell of pyramid?obtain some important conclusion.in practice,to designer, there are some value reference in primary-design and lectotype.