| 摘要 |
<p>The caisson (1) has a rigid front wall (2) and an upper wall (3) comprising an edge (4) opposed to the front wall. The edge is vertically projected toward outside the heat insulation caisson to form the caisson with a staircase section. Two centering elements (6a, 6b) of the upper wall and a lower wall (5) are arranged to form an assembly of staggered caissons in which one of the elements of the upper wall of the caisson is encased in one of the elements of the lower wall of the caisson.</p> |
