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结合梅钢1780热轧项目烟囱工程实例,从施工设施、施工工艺到关键工序的质量控制,对超高变径烟囱工程施工所采用的无井架液压滑模施工技术进行了详细阐述。重点介绍了施工平台组装、荷载试验、筒身及内衬施工、航空标志施工、操作平台拆除等施工工艺。同时指出应重点控制模板收分时中心点校正、中心位移、平台扭转失稳、混凝土水平裂缝及断裂、混凝土表面缺陷等,并给出解决措施。
Combined with the example of chimney project of 1780 hot rolling project in Meishan Iron and Steel Co., Ltd., the quality control of construction facilities, construction technology and key processes is described. The construction technology of non-derrick hydraulic sliding formwork adopted in construction of ultra-high diameter chimney project is described in detail. The construction platform assembly, load test, cylinder body and lining construction, aviation mark construction and operation platform dismantlement are mainly introduced. At the same time, it is pointed out that the correction of center point, center displacement, platform rotation instability, horizontal cracks and fractures of concrete, concrete surface defects and so on should be mainly controlled.