Support connecting method for bolted section steel beams

The invention discloses a support connecting method for bolted section steel beams. The method comprises the steps that the total load of the steel beams is obtained; webs of the steel beams and flanges of the steel beams are adjusted to be connected with the support correspondingly, so that the steel beams and the support are in a first connection state, and first loads and preloads needing to be borne by the steel beams in the first connection state are applied; and a web plate at at least one end of the steel beam and at least one flange at at least one end of the steel beam are bolted with the support, removing the preload on the steel beam, and applying a second load on the steel beam. By implementing the support connecting method of the bolted steel beam, positive and negative bending moments at the two ends and the midspan of the steel beam can be effectively homogenized, so that the stress performance and economy of the steel beam in the structure are improved, and a direction is provided for the feas