一、前言桁架拱桥、圆洞(孔)片拱桥、刚架拱桥、肋拱桥等都是群众喜闻乐见的桥型,但是在建造斜桥时,往往对于桥面纵坡很难处理。为了节省预制场地,需叠加预制拱片;为了绑扎制作钢筋骨架方便起见,应当使每片桁架都保持同样的形状。但这 I. INTRODUCTION Truss arch bridge, round hole (hole) piece arch bridge, rigid frame arch bridge and rib arch bridge are the bridge types loved by the masses. However, when constructing the inclined bridge, it is often difficult to deal with the longitudinal slope of the bridge deck. In order to save the prefabricated site, the prefabricated arch is to be superimposed. For the convenience of banding the steel skeleton, each truss should be of the same shape. But this