High-low span column-pulling type steel frame and construction method thereof

The invention relates to the technical field of steel structures, in particular to a high-low span column-pulling type steel frame and a construction method thereof. The construction method comprises the following steps: arranging components according to the actual steel frame size; drawing component positions according to the size of the steel frame, placing steel components, and adjusting the steel components to be straight; temporarily arranging a horizontal line at the bottom of a column, controlling the perpendicularity of the column, and recording the rooting angle of the column on a steel beam; using a high-precision coordinate acquisition instrument for acquiring coordinates of four corner points of the steel components; establishing a three-dimensional coordinate system by using software, and inputting the acquired coordinate points one by one until the simulated installation of all the steel members is accurate; simulating the influence range on component installation under the variable condition, a