Seismic Performance Comparison of Three-Type 800 m Spherical Mega-Latticed Structure City Domes

With changes in the city environment and advances engineering technologies, there is an increasing demand for construction of super-large span domes that can cover a large area to create small internal within specific region. However, structural design must overcome various challenges order break current limitations. Moreover, little research on structures achieving such spans. The seismic performance selected Kiewitt-type, Geodesic-type, Three-dimensional grid-type mega-latticed further investigated upon previous studies model selection, static stability analysis results 800 m structures. Finite element models were established with ANSYS analyze modal properties earthquake response study evaluated impact directionality as well pattern structure under frequent rare actions. It was found overall integrity good, strong coupling effects three directions. multi-dimensional input method should be applied solve response. Combining plastic development earthquakes, top circumferential trusses third fourth rings are relatively weak parts According this study, given known results, maximum displacement stress actions estimated. Furthermore, highlights prioritized designing spans m, providing helpful guidance practical application type structure.