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。
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.
出处
《工程爆破》
2004年第3期27-30,4,共5页
Engineering Blasting
关键词
烟囱
爆破切口
定向爆破
数学模型
Chimney
Blasting cut
Directional blasting
Mathematical model
