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现浇钢筋混凝土多层框架结构工程,木模费用约占现浇钢筋混凝土工程费用的15～30％,而木模工程约占整个工时的40～60％,工期大部分为木模施工所占用,不仅机械化程度低,劳动条件差,并且消耗大量木材。因此,发展和应用组合钢模板(简称钢模),对节约木材、提高工业化施工水平、加快施工进度及改善工人劳动条件,均有很好的作用。但钢模板及连接件、支承件的价格较高,要求摊销次数多(分别为25、50及100次,平均为59次),因而一次投资费用大,投资回收的年限长,并与每年的平均周转次数成反比(见附表)。
For cast-in-situ reinforced concrete multi-story frame structures, the cost of the wood form accounted for about 15 to 30% of the in-situ cast-in-place concrete project cost, and the wood formwork accounted for about 40 to 60% of the total man-hours. Most of the construction period is occupied by wood formwork construction. It not only has a low degree of mechanization, poor working conditions, but also consumes a lot of wood. Therefore, the development and application of composite steel formwork (steel die) has a good effect on saving wood, improving the level of industrial construction, accelerating the construction progress and improving the working conditions of workers. However, the price of steel formwork, connecting pieces and supports is relatively high, and the number of amortizations required (25, 50, and 100, respectively, with an average of 59), resulting in a large investment cost, long investment recovery period, and annual The average number of turnovers is inversely proportional (see the attached table).