Dynamic characteristics of a new annular tensile cable-truss structure

摘要

The large-span annular tensile calbe-truss structural system is a new kind of economic and larger spanning spatial structure system. A new type of annular tensile cable-truss structures with rigid bars instead of stable cables is introduced. Ribbed cable-truss 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 effect of prestress level and load level on dynamic behavior of the structure was studied. The computation results were compared with single-layer reticulated shell. 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.