The Research On Dynamical Characteristic And Earthquake Responds Of Spherical Reticulated Mega-structure

Spherical reticulated Mega-structure is a new form of space structures, because of its advantages such as saving steel, handsome in appearance, the force reasonable and appropriate to the super-long-span development, it will be used in engineering practice. However, researches of this structure are lacking at home and abroad. Based on the analysis of the structural forms with the rib-ring spherical reticulated mega-structure, and the kinds of seismic performance to do further research.Analysis of the rib-ring spherical reticulated mega-structure the main structure of forms, geometrical connections, and the corresponding physical control parameters are brought forward. The style of sub-structures and the connections of sub-structures with the main structure are analyzed, and a brief analysis of this article Spherical reticulated Mega-structure of the modeling method.The characteristics of natural vibration frequency of Spherical reticulated Mega-structure are researched, A series of parameter analysis are carried out for the alteration regularity of natural vibration frequency of the structure, from the rise-span, span structural, structural constraints, three-dimensional truss beam height, load size, bar section and other aspects discussed the different parameters of structural changes in the natural vibration frequency of the impact.With the time-history analysis studies the Spherical reticulated Mega-structure in rare case of earthquake, the structure of the internal forces and part-key node displacement over time of the curve, Analysis of the structure's dynamic response and change's of displacement under in comparison to the horizontal, vertical, three-dimensional seismic and proved some useful conclusions with the seismic design.Finally, some conclusions in this paper were drawn. Some problems need to be solved further were brought out too.