Automatic splicing process for precast beam reinforcement cage

The invention relates to the technical field of building construction, in particular to an automatic precast beam reinforcement cage assembling process which comprises the following steps: S1, building a three-dimensional live-action model of a reinforcement cage by utilizing a BIM technology in combination with an actual position relationship between an enclosure structure of a deep foundation pit and a supporting system, and simulating a hoisting and assembling process of a structural beam reinforcement cage; the structural beam steel reinforcement framework is reasonably divided into three modules including a top plate section, a left web section, a right web section and a bottom plate section; and S2, according to the steel reinforcement framework three-dimensional model, the numerical control hydraulic bending equipment adopts angle steel and round steel to bend and manufacture a steel reinforcement framework moulding bed, and the problems that the construction efficiency is low due to the fact that an e