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鞍钢修建公司在鞍钢中板厂钢筋混凝土吊车梁大修中,成功地采用了粘接钢板补强加固新技术,生产使用一年效里良好,已于6月10日在鞍钢通过部级鉴定。鞍钢中板厂钢筋混凝土吊车梁全长185m,无一条伸缩缝,因使用年久出现严重破损。梁底面有3～4处的混凝土保护层大面积剥落,主筋锈蚀以致锈断,有17处出现空鼓,是冶金部挂号的“危险结构”。鞍钢修建公司大胆采用粘接钢板补强加固技术,一改传统的“架柱托梁”加固方法,缩短工期200小时,且动迁小,投资少,共节约438万元。该加固法的基本做法是,先将已锈蚀钢筋进行除锈,涂刷YJ-302混凝土界
In the overhaul of the reinforced concrete crane beam of the Angang Steel Plate Plant, Ansteel Construction Company successfully adopted a new technology for reinforcing and reinforcing the bonded steel plates. The production and use of the steel were successful for one year and passed the ministerial level assessment at Angang on June 10th. The total length of the reinforced concrete crane girder of Angang Steel Plate Plant is 185m. There is no expansion joint, and it will be seriously damaged due to long service life. At the bottom of the beam, there are 3 to 4 concrete protective layers spalling on a large scale. The main reinforcement is rusted and rust is broken. There are 17 empty drums. This is a “dangerous structure” registered by the Ministry of Metallurgy. Anshan Iron and Steel Construction Co., Ltd. boldly adopted the technique of reinforcing and strengthening adhesive steel plates, changed the traditional “pillar joist” reinforcement method, shortened the construction period by 200 hours, and had small relocations and low investment, saving a total of 4.38 million yuan. The basic method of this reinforcement method is to remove rust from the rusted steel and paint the YJ-302 concrete sector.