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本文基子单位宽纵横向有限条带的变位模式，构造了一个１２个自由度的矩形薄板弯曲单元，此单元满足了单元边界Ｃ１连续性，且自由度少，计算精度较高，可用于大型板系结构的计算分析。
In this paper, the deformation mode of the finite width band in the longitudinal and transverse directions of the basic unit is constructed, and a 12-degree-of-freedom rectangular thin-plate bending unit is constructed. This unit satisfies the continuity of element boundary C1 with less degree of freedom and high calculation accuracy. Calculation of plate system structure.