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目前在建设热电站工程中,采用了预制装配式结构,以大吨位的塔吊进行吊装,较现浇钢筋混凝土结构施工进度大为加快。但是这些预制构件(包括现场的和预制场)的制作,需要化费大量的有技术的手工劳动。目前使用的柔性配筋的结构形式,在预制过程中要实现机械化、自动化和工厂化是比较困难的;诸如立柱上的各种牛腿、挑梁,数量和种类繁多的预埋铁件及预留插筋等等。随着热电站主厂房的跨度、高度及其负载的不断增大,骨架构件的断面及含筋率也随之增加。承受最大垂直力和弯曲力矩的骨架立柱非常巨大和沉重。由于立柱断面相当
At present, in the construction of a thermal power plant project, a prefabricated structure is adopted, and the crane is lifted with a large-tonnage tower crane, which is much faster than the construction progress of cast-in-place reinforced concrete structures. However, the production of these prefabricated components (including on-site and prefabricated sites) requires a large amount of skilled manual labor. The structural forms of flexible reinforcement currently in use are difficult to implement in the prefabrication process, such as mechanization, automation, and factoryization; such as various kinds of corbels and cantilever beams on the pillars, and a large variety of embedded iron pieces and preloads. Leaving ribs and so on. As the span, height, and load of the main power plant of a thermal power station continue to increase, the section and the ratio of ribs of the skeletal structure also increase. The frame pillars that are subjected to maximum vertical forces and bending moments are very large and heavy. Due to the cross section of the column