1.一般情况如果节约了脚手架的费用,实体桥的施工才是经济的。在较长的连续梁桥施工时,往往不同时在所有的跨度内设立支架,而是每跨依次施工,交替地使用支架。2.分段就地浇筑混凝土施工时,自重弯矩起的作用如果按图1的连续梁施工,仅在第一跨设立支架,并在每个施工段完工后顺序转移支架,则在完工的连续梁内由于自重而得到 1. General If the cost of scaffolding is saved, the construction of the physical bridge is economical. In the case of longer continuous girder bridges, it is often not the case that braces are set up in all spans at the same time. Instead, the brackets are alternately used for each span. 2. In-situ pouring concrete construction, the role of self-weight bending moment If the continuous beam construction in Figure 1, only in the first cross to set up stents, and in each construction section after the completion of the transfer of the stent in order to complete the Continuous beam due to self-respect and get