Abstract: A cable dome structure comprises a top circle and circles of vertical jack posts supported by radiating and hoop cables. The upper and lower ends of the jack post have an upper and a lower cable bar nodes, respectively. The upper cable bar node is connected with two upper radiating cables of present circle at one side, two upper radiating cables of the circle above and two lower radiating cables of the circle above at another side and an upper hoop cable connecting the middle of the upper cable bar node. The lower cable bar node of the present circle at the same side of the upper radiating cables is connected with two lower radiating cables of the present circle and a lower hoop cable connecting the middle of the lower cable bar node. The top circle comprises an upper and a lower cable bar nodes and an elastic pole.

Abstract: The present invention provides a layer-by-layer double-hoop sunflower-shaped cable dome structure and its construction method. A cycle of jack posts of an elevation forms a layer that comprises several units with same geometric characters and of same quantity except of the top layer. The units are arranged with same space on each layer. The upper end and the lower end of the jack post of each unit are installed with an upper cable bar node and a lower cable bar node respectively. The upper cable bar node is connected with two upper stayed cables of the present layer at one side, two upper stayed cables of the layer above and two lower stayed cables of the layer above at another side and an upper hoop cable going through the middle of the upper cable bar node. The lower cable bar node of the present layer at the same side of the upper stayed cables is connected with two lower stayed cables of the present layer and a lower hoop cable going through the middle of the lower cable bar node.