将有限单元半解析法用于求解三维填充式波形空间结构。构造了结构受弯窄条的反力矩

阵。根据有限单元半解析法将位移场表示成两个方向位移的组合：一个方向以函数形式给定位移

形状；另一方向为求解有限单元法的代数方程组。最后通过算例验证表明：有限单元半解析法对于

求解空间填充式结构非线性问题具有精度高，收敛快，易于计算机编程的优点。

关键词：有限单元半解析法；三维填充式波形结构；薄壁空间体系；几何非线性-The finite element semi-analytical method for solving three-dimensional space-filling structure of the waveform. Narrow construction of the structure by bending the reaction matrix. According to finite element displacement field of semi-analytical method expressed as the displacement of two combinations: a functional form to locate the direction to shift shape　the other direction for the finite element method for solving algebraic equations. Finally, examples show that: semi-analytical finite element method for solving nonlinear problems of space-filling structure with high precision, fast convergence, easy-to-computer programming advantages. Key words: finite element semi-analytical method　three-dimensional filling wave structure　thin space system　geometric nonlinearity