| 摘要 |
1,156,245. Gas storage containers. TAYLOR WOODROW CONSTRUCTION Ltd. 7 March, 1968 [7 March, 1967], No. 10774/67. Heading F4P. [Also in Division G6] A pre-stressing wire wound in a plurality of turns around a concrete pressure vessel, e.g. a gas storage container or a nuclear reactor vessel, and retained by a rectangular cross-sectioned circumferential trough 13, Fig. 1, in or on the outer surface of the vessel has its initial end wedged in a tapered hole B at one end of a groove 16 cut in an anchor plate 10 firmly held in the trough 13, the wire is then wound several times round the vessel so as to pass over the plate 10, and its terminal end is then laid along a second groove 17 parallel to the first groove 16 and is wedged in a tapered hole C. With the wire in place along the bottom of groove 16, a spacer 21, Fig. 2, occupies the remaining depth of the groove so as to be flush with the upper face 14, Fig. 3, of the plate 10 and the second turn of wire passes over the top of the spacer 21 and subsequent turns lie side by side. Groove 17 is deeper than groove 16, and with the terminal end of the first wire lying in groove 17 a shallow spacer 22 is laid along the top of the first wire, the initial end of a second wire is anchored at D, laid in groove 17 above spacer 22, and then a third spacer 23 which projects above the surface 14, is laid on the second wire. The latter is then wound several times round the vessel and the terminal end is laid along a groove 18 and anchored at E. Several wires are wound in like fashion to form a single layer of windings, and the wires of a second and subsequent layers are anchored to second and subsequent anchor plates angularly spaced along the peripheral groove 13; opposite lateral edges 11, 12 of each plate 10 being held in recesses in the side walls of the groove 13. In a modification, the anchor plate is made in two spaced parts (24, 25), Fig. 5 (not shown). |
