我们对已施工的三种预应力构件(预应力多腹杆拱型桁架,预应力三合一屋面板和预应力多孔板),在施工中的一些作法和体会,分別介绍于下。一、预应力钢筋混凝土多腹杆拱型桁架二年多来我们在月山、宝丰、郑州三地区先后共制作104榀,其中27m跨27榀采用定型图G 215(四),24m跨47榀采用定型图G 215(三),18m跨24榀和15m跨6榀是本工程的个体设计,我们采用的施工方法是平臥、重叠、整榀预制,后张法预应力。 1. 底模是砌砖三层,上抹水泥砂浆,边模是木模,重叠最多的是四层,中间的隔离层有二种方法:①以黄泥浆砌二皮砖,中间埋木砖便于立模。木模上面抹水泥砂浆,这样做多 We have introduced the construction of the three prestressed components (prestressed multi-web arch trusses, prestressed triple roof and prestressed porous plate), some of the practices in the construction and experience, respectively, introduced below. For more than two years, we have produced a total of 104 榀 in Yueshan, Baofeng, and Zhengzhou areas. Among them, 27m 27 27 榀 adopted stereotypes G 215 (D), 24m across 47定 using stereotypes G 215 (C), 18m across 24 榀 and 15m across 6 榀 is the individual design of the project, we use the construction method is supine, overlapping, prefabricated, pre-tensioning method. 1.The bottom mold is the bricklayer three layers, the cementing mortar, the side mold is the wooden mold, the overlap is the most four, the middle of the isolation layer there are two ways: ① yellow brick mud brick, buried in the middle of the brick easy Stand up. Apply wood cement mortar above, so much