The research result indicated : for the strip primary mirror discussed in this article , the hexagon light - weighted cell has the best structural rigidity quality , the square cell is a little worse , the triangle cell is the worst ; there is an optimum on primary mirror thickness ; on condition of 1g gravity load combining with 4 centigrade uniform temperature rising , the thinner and higher of the flexible support reed , the better of the primary mirror surface figure . the decision of the structural parameters of the flexible support reed must take static rigidity , dynamic rigidity , static strength and dynamic strength of primary mirror assembly into account 研究结果表明：对于本文的长圆形主镜，采用正六边形轻量化孔，镜体结构刚性品质最好，正方形次之，正三角形最差；主镜镜体厚度存在最佳值；主镜组件在1g重力、均匀温升4共同作用的工况下，主镜柔性支撑簧片厚度越小、高度越高，主镜综合面形误差( p - v值)越小，但同时主镜组件的刚体位移增大、固有频率下降，因此柔性支承结构参数的确定要综合考虑主镜的综合面形误差和主镜组件静态刚度、动态刚度、静态强度和动态强度等因素。
