Abstract:

As a new construction method, the structural cut and convert (CC) method is of great significance to the safety evaluation of its structural system. Firstly, the characteristics and principles of CC method are introduced based on the first experimental project of CC method. And then according to the structural characteristics of every stage, the structural system is simplified by the element model of the rod system, the freedom degrees of the structure of every stage are analyzed, and its safety is judged. Some conclusions are drawn as follows: (1) Safe and reliable structure system should has certain strength and rigidity to bear external load and resist deformation. (2) The structure at each stage should meet the requirement of maintaining the overall stability under accidental load. (3) There should be redundant constraints in the structural system to provide a certain degree of redundancy for the overall stability. (4) The effect of time and space should be considered in the structural system, that is, the incremental method should be adopted to fully consider the mutual influence of loads in different stages. Finally, by comparing the structural stress difference between the incremental calculation method and the total calculation method, and combining the problems existing in the design and construction of the engineering test project, the corresponding solutions are proposed and the optimization direction is pointed out.

Key words: structural cut and convert (CC) method, structural system, redundancy, structural reliability, structural stability, structural safety