| 摘要 |
The structure has elongate flexible structural parts (A) which are arranged at intervals transversely from one another and are bent, without exceeding the yield point and thus without permanent deformation, from an essentially straight, unbent configuration into an essentially paraboloid configuration. Each structural part is secured, by retaining and supporting devices (B) provided in the vicinity of its ends, against outwards and downwards movements and is retained in its paraboloid configuration achieved by the bending. By the process according to the invention, the intention is to raise the structural parts, e.g. aluminium tubes, by a lifting force, for example by a crane engaging in a central region between its ends, while the opposite ends of the tube are supported on the ground or in another manner, e.g. on the walls in the case of a roof. If the tube is raised and the ends are secured against deflection movements outwards and downwards, then, after the lifting force has been removed, the bent tube, in a natural rest position under the effect of the load of its own weight, assumes an essentially paraboloid configuration. <IMAGE>
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