WORK EXECUTION METHOD FOR CHORD STRETCHED BEAM ROOF STRUCTURE

PURPOSE:To introduce force as designed into large beams by temporarily fixing the secondary member around a ring girder to the large beams freely in relative sliding, and then introducing tension into chords so as to release the stress going to flow to the secondary member. CONSTITUTION:Plural large beams 1... are junctioned, being directed outward with a ring girder 2 as the center, to the periphery of the circular ring girder 2, and secondary members such as plural small beams, braces, etc., are junctioned between adjacent each large beam 1... Next, chords 3... are stretched between the end of each large beam 1... and the bottom of the ring girder 2 so as to introduce specified stress into a roof B. In this work execution, the secondary members around the ring girder 2 are fixed temporarily, freely in relative sliding, to the large beam 1... so as to form a stress release zone. Next, tension is introduced into the chords 3... so as to release the force going to flow to the secondary member in a stress release zone. And after tension introduction, the secondary member being fixed beforehand is fixed regularly to the large beam.