| 摘要 |
This structure is made from a certain number of elements 2 which are identical to each other, each of which forms a tetrahedron, two edges of which are constituted by two orthogonal bars 3, 4 and the other four edges of which are constituted by rods 5, the ends of each of which are fixed to the ends of the two bars, the latter being equipped at their ends, with assembly plates 6, each of the two bars being, at least at one of its ends, at one end of the corresponding bar 3, 4 of another element, with interposition of a complementary bar 14 which is perpendicular to it, the various assemblies being produced by bolting. <IMAGE>
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