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上海海仑宾馆基础底板平面3011m～2,厚度2.80m,配置直径40mm钢筋上下11层,共约1800t。为保证底板整体强度,设计规定不允许采用常规的搭接方法,因是日本、巴西等国进口钢筋,焊接性能较差,也不能采用剖口焊接头方法,经与设计、筹建处共同协商,最后决定采用冷压连接新技术。一、连接技术准备钢筋冷压连接是近年来开发的新技术(详见本期“钢筋冷压连接技术的研究及其应用”),但直径40mm的大规格钢筋接头采用冷压连接技术,用于高级民用建筑工程上尚属首次,为使冷压连接的钢筋接头质量具有可靠保证,在压接施工前进行了充分的准备。 1、根据上海市工程建设技术咨询公司关于钢
Shanghai Hailun hotel base floor plane 3011m ~ 2, thickness 2.80m, configure the diameter of 40mm steel up and down 11 layers, a total of about 1800t. In order to ensure the overall strength of the floor, the design regulations do not allow the use of conventional lap joint methods, because Japan, Brazil and other countries import steel, welding performance is poor, can not be used to weld the joints, after consultation with the design, preparation office, Finally decided to use cold pressure connection new technology. First, the connection technology to prepare the steel bar cold pressure connection is a new technology developed in recent years (see the “research and application of steel bar cold pressure connection technology”), but the 40mm diameter large-size steel bar joint adopts cold pressure connection technology. For the first time in high-grade civil construction projects, in order to ensure the quality of the cold-pressed joints of the steel joints, sufficient preparations were made before the crimping construction. 1. According to Shanghai Engineering Construction Technical Consultation Company on steel