| 摘要 |
<p>Framework comprising at least two tubular portal frames (2a, 2b), each having a truss (3) supported by two uprights. Two successive trusses are connected together by a roof ridge (11) and two lateral cross members (12a, 12b). The truss (3) comprises two rafters (5a, 5b) which can pivot about the member-connecting component (6). The roof ridge (11) and the lateral cross members (12a, 12b) are flexible and articulated to the rafter-connecting components (6) and the truss-support components (9). They are stiffened, in the assembled state, by locking means (15) and immobilised onto the trusses by immobilising means. <IMAGE></p> |
