Design method for releasing thermal stress of steel structure frame

The invention discloses a design method for releasing thermal stress of a steel structure frame, which comprises the following steps of: judging whether the distances between two ends of a thermal stress release device and the bearing surface of the steel structure frame connected with the end are equal or not so as to select the type of the thermal stress release device; establishing a coordinate system, establishing the origin of the coordinate system at the axis of the thermal stress release device, and defining the direction parallel to the length of the thermal stress release device as the x-axis direction, the y-axis direction and the z-axis direction which are all perpendicular to the surface of the thermal stress release device; and checking the specific size of the thermal stress release device according to the components of the thermal stress needing to be borne by the steel structure frame on the x axis, the y axis and the z axis. According to the thermal stress needing to be borne by the steel str