结合灰色预测模型和异形拱桥拱肋空间线形控制的特点，利用灰色系统理论建 立了针对异形拱桥拱肋空间线形灰色预测的 MGM( 1， 2) 模型，该模型考虑了轴线偏差和 拱肋旋转因素． 在给出 MGM( 1， n) 模型的概念、求解方法的基础上，以 Matlab 为软件平台 编制了相应的程序． 以工程实例为背景的实验结果表明，异形拱桥拱肋空间线形 MGM(1， 2) 模型的预测结果与实际测量结果具有很好的一致性，说明文中提出的异形拱桥拱肋空间 线形 MGM( 1， 2) 模型是科学合理的． 

Combining the characteristics of grey prediction model and spatial alignment control of specialshaped arch bridge arch rib，a MGM( 1， 2) model for spatial alignment grey prediction of the specialshaped arch bridge archrib was established based on the grey system theory，and the model considered the axis deviation and arch rib rotation factors． On the basis of giving the concept and solution method of the MGM( 1， n) model，a corresponding program was compiled by using Matlab software platform． The experimental results based on engineering examples show that the predict results of the specialshaped arch bridge arch rib from MGM( 1， 2) model are in good agreement with the field test values，which demonstrates that the MGM( 1， 2) model for spatial alignment grey prediction of the specialshaped arch bridge arch rib is scientific and reasonable．