Method for calculating bearing capacity of complex tube plate-tubular joint of large-span steel tube tower

The invention provides a method for calculating the bearing capacity of a complex tube plate-tubular joint of a large-span steel tube tower, which comprises the following steps of: disassembling a stiffening member related to the complex tube plate-tubular joint by adopting a layer-by-layer splitting thought, and determining a bearing capacity improvement coefficient without the stiffening member related to the joint; and calculating the bearing capacity of the node 5 and the bearing capacity of the complex tube plate-tubular node. According to the method, the nodes are processed by adopting a layer-by-layer splitting method, related structures of the nodes are sequentially removed, bearing capacity improvement of the nodes is calculated, a relatively simple node form is obtained after layer-by-layer splitting, and then the basic bearing capacity of the simplified nodes is determined in combination with existing specifications and calculation methods; the improvement effect of each node stiffening member on t