PRELOAD EXECUTING METHOD FOR TENSION CHORD BEAM ROOF STRUCTURE

PURPOSE:To enable efficient execution of a fixing work and a finishing work by a method wherein tension is introduced to a chord member to execute a finish work of this part, and further a secondary member is secured to a large beam to execute a finish work of a portion except a stress release part. CONSTITUTION:A tension chord roof is formed with a plurality of large beams 1 joined with the outer peripheral part of an annular ring girder 2, and secondary members 15 and 17 being a plurality of small beams 15 and braces 17. When the secondary members 15 and 17 are joined with the large beam 1, a stress release zone Z is formed, and thereafter a chord member 3 is stretched to generate stress at the large beam 1. Thereafter, a finish work of a part except the stress release zone Z is executed, and simultaneously, a heavy object is placed to the periphery of the stress release zone Z to produce a tension state. In this state, the secondary members 15 and 17 are secured to the large beams 1, and thereafter a finish work of a portion except the stress release zone Z is executed. This method enables introduction of tension as designed to the tension chord roof.