Hanging column type steel structure jig frame construction method

The invention relates to a construction engineering construction technology and provides a hanging column type steel structure jig frame construction method. The construction method comprises a first step of designing a jig frame, a second step of erecting the jig frame, a third step of installing a hanging column lower node steel structure floor, a fourth step of rechecking whether a hanging column and a roof main truss meet the construction state stress requirements, a fifth step of installing the hanging column, a sixth step of installing a steel roof and a seventh step of dismantling the jig frame. In the first step, the jig frame mush meet the requirements of bearing all vertical loads and construction loads on the upper part; in the second step, the jig frame is arranged under the hanging column and is firmly supported on a foundation or a floor, and four groups of jacks are arranged at the top of the jig frame; and in the third step, the jig frame is utilized to lift a steel structure floor on a lower node of the hanging column according to an ordinary steel structure floor installing process. A hanging column type steel structure system is changed into an ordinary beam column system to perform construction, the problem of contradiction between a designed stress transmitting route and a conventional construction sequence is solved, construction is performed through a conventional construction process from bottom to top, and the hanging column type steel structure jig frame construction method is simple, convenient, efficient and wide in applied range.