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一、模板 模板质量的优劣,直接影响混凝土构件的质量、外形、安全、速度和成本。有的工地在立模前不经设计和计算,盲目蛮干造成不必要的事故。 1.立模的支撑系统失稳造成塌落事故。某厂综合楼,二层结平的肋形楼板,层高9m,盲目采用二节支模,支撑的下部设水平撑无剪力撑,上部几乎没有水平撑,导致在楼板混凝土浇筑时,因支撑系统失稳而坍落,造成重大伤亡事故。某厂的厂房,檐墙上是圈梁带伸出宽500mm的檐沟,边高250mm(见图
First, the quality of the template template, a direct impact on the quality of concrete components, shape, safety, speed and cost. Some sites were not designed and calculated before they were erected. Blindness and recklessness caused unnecessary accidents. 1. The instability of the support system of the vertical form causes a collapse accident. A factory complex, the two floors of the ribbed floor, the height of 9m, blindly using two sections of the mold, the support of the lower part of the horizontal support without shear support, the upper part of almost no horizontal support, resulting in the floor when the concrete pouring, The support system was unstable and degraded, causing heavy casualties. The factory building of a certain factory, on the wall of which is a ring beam with a 500mm wide sulcus, 250mm high (see figure)