Energy method-based method for calculating bearing capacity of beam-column top-welding bottom-bolting node under consideration of floor sliding effect

The invention belongs to the field of civil engineering, and relates to a calculation method for considering the influence of a floor on the bearing capacity of a node in calculation of the bearing capacity of an upper-welding lower-bolt node. The method is characterized in that the flexural rigidity and the bearing capacity of the steel beam are remarkably improved after the floor slab and the steel beam are combined, and accurate analysis is more facilitated by comprehensively considering the effect of the floor slab in the bearing capacity calculation of the upper-welding lower-bolt node. The effective width of a compressed concrete plate is converted into equivalent conversion section width of steel, the slippage effect caused by insufficient shear connectors of the composite beam in actual engineering is further considered, the total potential energy is summed, and a calculation formula of the bearing capacity of the upper-welding lower-bolt joint is deduced on the basis of an energy method. The method i