下行式自推进移动模架(SL-MSS)的突出特点是在不借助任何其他辅助设备的情况下,依靠自身的2对牛腿,前后鼻梁及3组扁担梁实现了行走、升降、调节的全部操作,对复杂的施工环境有良好的适应性。在整个箱梁施工过程中,通过对每个梁段的测量检测,积累数据和经验,通过理论分析和经验积累来取得移动模架各部分变形的客观数据。对移动模架系统变形的准确预测是线形控制的关键。 The salient feature of the SL-MSS is that it can be walked, raised and lowered with its own 2 pairs of cowhide, anterior and posterior nasal bridge, and 3 sets of pole beams without any other auxiliary equipment All operations, the complex construction environment has a good adaptability. During the construction of the whole box girder, through the measurement of each beam section detection, accumulation of data and experience, through theoretical analysis and accumulated experience to obtain the deformation of the various parts of the movable mold objective data. Accurate prediction of the deformation of a mobile formwork system is the key to linear control.