Abstract
The large-span space beam string-structure system is a kind of economic and larger spanning spatial structure system. A new type of space beam-string-structure with outer truss torus is introduced. Sunflower-patterned space beam-string-structure was taken as an example and its dynamic characteristics under full-span load and half-span load were analyzed by block Lanczos method. The efect of prestress level and load level on dynamic behavior of the structure was studied. The results are valuable for the dynamic response research on the earthquakes and wind vibration and will provide a reference for a further design and project application of such structure.
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