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对于索杆杂交结构,可以根据平衡矩阵理论确定体系在初状态几何下的整体预应力分布和大小,同时也需满足杆件的变形相容条件和本构关系。本文对索杆杂交结构采用平衡矩阵理论进行了探讨,指出索杆杂交结构不存在独立柔度分布模态。索杆杂交结构一般是杆件拓扑关系有规律的对称结构体系,位置对称的杆件其预应力相同,本文提出了一种新的索杆杂交结构整体可行预应力求解方法,即根据杆件的对称性,直接从体系的平衡方程求解整体可行预应力。
For the cable rod hybrid structure, the distribution and size of global prestress of the system under the initial state geometry can be determined according to the equilibrium matrix theory, and the deformation compatibility and the constitutive relationship of the rod are also to be satisfied. In this paper, the equilibrium structure of the hybrid rod-rod hybrid structure is discussed, and it is found that there is no independent distribution of the flexibility of rod hybrid structure. The hybrid structure of cable rod is generally a symmetrical structural system with regular topological relations of rods. The prestress of the symmetrical rods is the same. In this paper, a new method to solve the feasible prestress of cable hybrid structure is proposed, Symmetry, directly from the system equilibrium equation to solve the overall feasible prestress.