The invention relates to a frame
beam column fire-resistant node which is formed by increasing a trapezoidal connecting key at the end part of a steel beam, carrying out high-strength bolt anchoring on an upper
flange at the beam end and simultaneously carrying out limited anchoring on a lower
flange at the beam end, wherein the lower
flange at the beam end has the limited telescopic capacity under the environment of a fire disaster. The implementation of the frame
beam column fire-resistant node is as follows:
cutting the steel beam with the flanges and a web plate and the trapezoidal connecting key, and then respectively assembling a column, the steel beam, the trapezoidal connecting key, a stiffening plate, an end plate and a steel plate through high-strength bolts, ordinary bolts and
welding seams. The frame
beam column fire-resistant node is applicable to the industry with higher requirements on the fire-resistant performance and the anti-collapse capacity of the structure and a civil
steel frame structure. The frame beam column fire-resistant node has the advantages of simple structure, convenient construction and low cost of required materials, and can avoid the local buckling of the beam under the high-temperature environment, form the
catenary effect and have the good fire-resistant performance and the anti-collapse capacity.