唐山、丰南地区发生地震后,唐钢的很多钢筋混凝土梁、柱、屋架等都受到不同程度的破坏,都普遍地产生各种形式的大小裂缝。对这些受损坏的钢筋混凝土梁、柱、屋架在恢复使用之前,必须作妥善的修补处理,以免造成安全事故。修补钢筋混凝土梁、柱、屋架的裂缝,过去多采用钢材加固处理,不仅用钢量大、施工困难,且工期较 After the earthquakes in Tangshan and Fengnan areas, many steel reinforced concrete beams, columns, and roof trusses of Tangsteel were damaged to different degrees, and all types of cracks were generally produced. Before these damaged reinforced concrete beams, columns and trusses are restored, they must be properly repaired to avoid safety accidents. Repair of cracks in reinforced concrete beams, columns, and roof trusses. Steel reinforcement was used in the past. Not only was the amount of steel used large, construction was difficult, and the duration was relatively high.