STRUCTURE CONSTRUCTION METHOD OF LARGE SPAN FRAME IN LARGE SPACE TRUSS STRUCTURE

摘要

PROBLEM TO BE SOLVED: To build an extremely large span frame by the use of an ordinary crane, reduce altitude works and temporary materials, shorten the construction period, decrease the cost, and improve safety. ;SOLUTION: The outer circumferential ring 3 and the outermost circumferential ring 2C of a large span frame 2 are built on a foundation 6, a first center part large span frame 2A and at least one intermediate part ring structure 2B are built by assembling on the ground, the first center part large span frame 2A (2-1) is elevated by suspending or the like to the end part connection height and connected to the intermediate part ring structure 2B so as to form a second large span frame 2-2, and the second large stretch frame 2-2 is elevated to the end part connection height by suspending or the like and connected to the outermost circumferential part ring structure 2C. All of 2A, 2B and 2C are provided with constraint mechanism, and by tension of the constrain mechanisms 11, fixed desin dimension is obtained and prestress is introduced to the member.;COPYRIGHT: (C)1997,JPO