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广东韶关钢铁厂三炼焦80米钢筋混凝土烟囱采用无井架液压滑模方法施工。在施工中,烟囱最大的半径飘移为160毫米,烟囱中心垂直度偏差为15毫米,小于烟囱规范规定的允许偏差80毫米(H/1000),在整个滑升过程中没有出现安全事故,也未发生裂缝过大或严重露筋现象,达到预想目的。该烟囱总高度80米,筒身底部外径6900毫米,筒首内径3390毫米,筒身壁厚180～320毫米,烟囱外壁坡度2%。由于采用无井架液压滑模施工,极易产生平台偏移,而滑
Three coking 80-meter reinforced concrete chimneys at Shaoguan Iron and Steel Plant in Guangdong were constructed using a hydraulic gliding method without derrick. During the construction, the maximum drift of the chimney is 160 mm. The vertical deviation of the chimney center is 15 mm, which is less than the allowable deviation of the chimney specification of 80 mm (H/1000). No safety accident occurred during the entire slide. Excessive cracking or serious loosing occurred and the intended purpose was achieved. The total height of the chimney is 80 meters, the outer diameter of the bottom of the barrel is 6900 millimeters, the inner diameter of the barrel is 3390 millimeters, the wall thickness of the barrel is 180-320 millimeters, and the slope of the chimney outer wall is 2%. Due to the use of hydraulic gantry construction without derrick, it is easy to produce platform offset and slip