混凝土压力壳点支撑圆柱钢衬双轴失稳研究

The study on the biaxial instability of a point--supported cylindrical liner shell encased in a concrete pressure vessel

应用Ｗ．Ｔ．Ｋｏｉｔｅｒ的初始后屈曲理论，研究混凝土压力壳内点支撑圆柱钢材在轴向及侧向外庄两种载荷同时作用下的临界载荷，后屈曲性态，并给出支撑点铆栓的合理布置间里。结果表明：点支撑圆柱钢衬的后屈曲性态较为复杂，它随轴向和环向的支撑间距比而变化，当此支撑间距比满足一定条件时，可使点支撑钢衬后屈曲呈稳定性态。

Using W. T. Koiter's initial post--buckling theory, this paper deals with the critical load and post-buckling behavior of a point-- supported cylindrical liner shell encased in a concrete pressure vessel while the liner shell is subjected to the axial and lateral compressions. The reasonable spacing of anchors is given. The results show that the point- supported cylindrical liner shell has a r,l,tively complicated Post-buckling beha- vior. The behavior is subject to the change of anchor spacing in both axial and circumferential directions. When the ratio of the anchor spacing in these two directions satisfies a certain condition, the liner shell will carry the maximum load.