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Cable dome structure is flexible by cable and strut tensegrity structure is a reasonable force , highly efficient structure . As a prestressed structural stiffness and load carrying capacity of the cable dome through the prestress to get , therefore , the initial form of the problem is the basis of cable dome structure analysis . Although domestic scholars to carry out related research , but limited to the Geiger system and the Levy system . In this paper, the a rectangular plane Geiger type , the nest , sunflower Kiewitt four system cable dome launched . To simplify the calculation of cable dome to the given geometry , the application of force density method , introduced the concept of the overall feasibility of prestressed solving draw prestress distribution of cable dome structure . Take full advantage of the symmetry of the structure , the the simplified force density algorithm , greatly simplifying the process of solving prestressed saves computational time and computer storage space . Dynamic relaxation the cable dome morphology to determine the geometry and structure the prestress distribution were not given , as well as to set target geometry issues . Theoretical and numerical example consider the weight of the structure of the force density method and dynamic relaxation law . Finally a summary of the research for this article , and draw some conclusions on engineering meaningful , and pointed out the direction of future research .
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