【摘要】 根据钢筋混凝土烟囱失稳倾倒原理,通过力学分析,建立了描述钢筋混凝土烟囱的切口形状与切角大小、切口高度之关系的数学模型。结合工程实例,详细分析了切口形状对切角大小和切口高度的影响。研究表明,在相同切角大小时,组合形切口具有最小的切口高度;同时表明,采用本文的模型所确定的最小切口高度要比实际工程中采用的偏小。更多还原

【Abstract】 On the basis of the collapsing principle of a RC chimney under destabilizing state,a mathematical model that shows the relation of blasting cut shape to cut’s angle and height is established through mechanical analysis.In the light of a practical example,effect of cut shape on cut’s angle and height is studied in detail.The study shows that the combined blasting cut has a minimum cut height in the condition of same cut angle,and that the minimum cut height determined with the model in this study is less than those adopted in real projects.更多还原