通过算例得出了结构外压失稳的欧拉曲线，验证了半解析有限柱壳条元法的正确性与合理性。
The Euler curve of thin shell structural off, stability due to external water pressure is obtained and the correctness and reliability of the method are proved.
根据曲板的边界条件给出三角级数的解析解和有限条法的近似解。
According to the boundary conditions of the curved slab, an analytical solution by trigonometric series and an approximate solution by method of finite strips have been given.
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