Pipe truss construction method

The invention provides a pipe truss construction method, which belongs to the technical field of pipe truss installation, and comprises the following steps: step 1, establishing a three-dimensional model for a pipe truss to obtain coordinate information of each pipe fitting; 2, two pipe fittings associated with the cast steel joints in the pipe truss are selected as positioning pipes, and the positioning pipes are positioned and installed; thirdly, the two pipe openings of the cast steel joint are in butt joint with the two positioning pipes, and welding and fixing are conducted; and fourthly, other pipe fittings in the pipe truss are sequentially installed, and the formed pipe truss is obtained. According to the pipe truss construction method provided by the invention, the two pipe fittings in the pipe truss are selected as the positioning pipes, the positioning pipes are firstly positioned and mounted, and then the positions of the positioning pipes are adjusted, so that the positioning of the cast steel jo