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一般小型工业企业或民用建筑采暖锅炉房常用35～45米砖烟囱。这类砖烟囱施工组织的关键,是妥善解决垂直运输和操作平台两个问题。45米以下砖烟囱惯用的施工方法是采用双排外架(木或钢)配以内井架(钢),但需用大量架木或钢管,用工量多,劳动强度大。1981年我们在湖南衡阳木材加工厂锅炉房45米砖烟囱施工时,采用外挂架施工,从零米开始在一个月内竣工。施工实践证明,采用外挂架施工45米以下砖烟囱是一种较先进的施工方法,值得推广。
General small industrial enterprises or civil building heating boiler room commonly used 35 to 45 meters brick chimney. The key to this kind of brick chimney construction organization is to properly solve the two problems of vertical transportation and operation platform. The conventional construction method for brick chimneys under 45 meters is to use double rows of external frames (wood or steel) combined with internal derricks (steel), but a large number of framed wood or steel pipes are needed, with a large amount of work and labor intensity. In 1981, when we were constructing a 45-meter brick chimney in the boiler room of the Hunan Hengyang Wood Processing Plant, we used external pylons to construct and started construction from zero meters within a month. Construction practice has proved that the use of external pylons to construct brick chimneys under 45 meters is a more advanced construction method and worthy of promotion.