斜拉网架是一种由塔柱、网架与拉索构成的空间组合结构。本文对这类结构进行了详细的理论分析，并根据有限元法编制了相应的电算分析程序。文中对于塔柱与网架分别采用了空间梁单元与空间杆单元分析；而对于拉索则按等代刚度法将其等代为受拉的二力杆件，同时考虑了拉索大位移的非线性影响。通过具体的算例，对索的非线性影响情况进行了讨论与分析，同时也提出了一些可供工程设计参考的结论性意见。 Cable-stayed grid is a tower column, grid and cable composed of space combination structure. In this paper, a detailed theoretical analysis of this type of structure, and according to the finite element method to prepare the corresponding computer analysis program. In this paper, the spatial beam element and the spatial element analysis are respectively used for the tower and the grid. For the cable, the equivalent force method is adopted to replace the two elements with the equivalent stiffness method, taking into account the large displacement of the cable Linear effect. Through the concrete example, the nonlinear influence of the cable is discussed and analyzed. At the same time, some concluding observations that can be used for engineering design reference are also proposed.