用一般弹性体的广义混合变分原理 ,导出了适合 Reissner板弯曲问题的广义混合变分原理及其有限元广义混合法。算例说明 ,该有限元模式的刚度可以改变 ,比常规位移法的精度高 ,同时还能克服常规 Reissner板位移元用于计算薄板时所出现的“剪切自锁”现象 ,计算结果稳定。最后分析该法能够克服“剪切自锁”现象的原因。 By using the generalized mixed variational principle of general elastomers, a generalized mixed variational principle and a generalized finite element method for the bending problem of Reissner plate are derived. The numerical example shows that the stiffness of this finite element model can be changed, which is more precise than the conventional displacement method. At the same time, it overcomes the phenomenon of “shear self - locking” which occurs when the conventional Reissner plate displacement element is used to calculate the thin plate, and the calculation result is stable. Finally, it analyzes the reason why this method can overcome the phenomenon of “shear self-locking”.