| 摘要 |
A tank designed to contain high-pressure fluid, e.g. in a nuclear reactor, has a peripheral wall composed of concentrically nested concrete shells individually prestressed by surrounding wire coils; the several shells are separated by interposed antifriction layers preventing the transmission of substantial shear stresses therebetween. The top and bottom of the tank are formed by nested incurved concrete bowls, separated by antifriction layers, bearing upon stepped annular shoulders in an upper and a lower annular header secured by vertical tension cables to the peripheral wall. |
