Fabricated cornice construction method

An assembly type cornice construction method specifically comprises the following steps of S1, surveying and setting out, S2, dividing keels in the length direction of a cornice body according to the cornice surveying and setting out condition, S3, arranging a machining area on the site ground, machining a single-frame framework in the machining area according to the design in the step S2, and then according to the maximum lifting capacity of a tower crane, conducting construction on the single-frame framework according to the design in the step S2. Processing a plurality of single-frame frameworks into a small-frame unit according to a drawing; s3, aluminum plate processing; s5, the aluminum plate is installed at the design position of one small unit according to a drawing; s6, the one-truss small unit is hoisted, and the one-truss small unit is hoisted to the installed steel support on the roof steel frame; s7, connecting the small unit with the steel support after re-checking; and S8, the step S6 and the s