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冶金部二十二冶三公司第一工程队,在承建山东胜利油田大型工业厂房施工中,有434根钢筋混凝土吊车梁需要在现场预制生产,每根吊车梁上翼缘设有间距为600毫米的预留圆孔,以备固定轨道用。这些预留孔,开始生产仍按传统施工方法,埋设长与翼缘高相等、直径为1英寸的黑铁管,由于铁管固定麻烦,不仅浪费工料,拖延混凝土浇灌工期,而且由于混凝土振
The first engineering team of the 22nd Metallurgical Company of the Ministry of Metallurgical, in the construction of a large-scale industrial plant in Shandong Shengli Oilfield, has 434 steel crane beams that need to be prefabricated at the site. The upper flange of each crane beam is provided with a spacing of 600mm. Leave round holes for use on fixed tracks. In these reserved holes, the production is still carried out according to the traditional construction method. The black iron pipes with a length equal to the flange height and 1 inch in diameter are buried. Because the iron pipes are fixed and inconvenient, not only the weight is wasted, the duration of concrete pouring is delayed, and the concrete is shaken.