Method for assembling truss framed leg of self-elevating drilling platform

A method for assembling a truss framed leg of a self-elevating drilling platform includes: the first step of elongating racks; the second step of performing a single sheet; the third step of assembling section by section; the fourth step of pre-assembling the truss framed leg section by section, namely mounting a plurality of fasteners at the folded joints of sections of the truss framed leg; the fifth step of turning the truss framed leg section by section; the sixth step of assembling the sections of the truss framed leg into an integral truss framed leg. All assembling operations can be completed before the drilling platform enters the water, times of ascending of ships and construction difficulty are greatly reduced, abrasion to the framed leg by repeatedly ascending of the ships is avoided, assembling period of assembling of the framed leg is shortened, and work efficiency is improved. Meanwhile, assembling accuracy of the framed leg is improved, a great quantity of construction materials are saved, and high expense caused by use of a large-size floating crane is avoided.