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铜陵冶炼厂110m钢筋混凝土烟囱,建于1952年。1963年发现裂缝,1965年设置环形钢箍加固。但加固后裂缝仍然继续发展,于上在1980年再次加固。此次加固结构新颖,别具一格,工期短,施工方便,经生产使用6年后,效果良好。一、烟囱结构和使用情况烟囱全高110m,内径上口为2.8m,下口为5.34m,筒壁厚度自上而下由120mm渐变为450mm。筒壁配筋较多,在标高55m以下筒壁内外两侧都配了纵横钢筋,标高55m以上则仅在外侧配筋,在离筒首1m处设了环形钢筋混凝土平台。烟囱内部只在下一段,即标高35m以下有内衬。内衬为耐火砖砌筑,厚115mm,每5m一段,每段有圈梁支承,圈梁则以牛腿悬挑于筒壁上。这
The 110-meter reinforced concrete chimney of Tongling Smeltery was built in 1952. Cracks were discovered in 1963 and in 1965 steel hoop reinforcement was installed. However, after the reinforcement, the cracks continued to develop and were reinforced again in 1980. The reinforcement structure is novel, unique, short construction period, convenient construction, and the effect is good after 6 years of production and use. First, the structure and use of the chimney The full height of the chimney 110m, the inner diameter of the mouth is 2.8m, the lower mouth is 5.34m, the wall thickness of the cylinder from the top down to 450mm. There are many reinforcements on the wall. Vertical and horizontal rebars are used on both the inside and outside of the wall of the elevation of 55m. For elevations above 55m, reinforcements are placed only on the outside. Circular reinforced concrete platforms are set at the first 1m away from the cylinder. The interior of the chimney is lined only in the next section, which is 35m below the elevation. The inner lining is made of refractory bricks, and the thickness is 115mm. Each section is 5m. Each section has a ring beam support, and the ring beam is suspended on the wall of the drum with a calf. This