Method for controlling construction deformation of skew single-layer grid structure under irregular supporting condition

The invention provides a method for controlling construction deformation of a skew single-layer grid structure under irregular supporting conditions. The method comprises the following steps: S1, before construction, carrying out construction simulation on a grid structure by adopting a method of defining a construction stage, and simulating support closing and rod piece welding conditions of the grid structure by adopting a method of releasing beam end constraint, simulating pre-deformation values of a vertical support system of the grid structure and a roof of the grid structure by adopting a method of changing node coordinates; and S2, during construction, the control deformation of vertical steel columns of the vertical supporting system is reserved, temporary supports are reasonably arranged, pre-arching is conducted in advance, a reasonable installation sequence, a reasonable welding process and a reasonable unloading sequence are formulated, and therefore construction deformation of the grid structure