李玉岐,焦永斌,谢康和
LI Yu-qi~1,JIAO Yong-bin~2,XIE Kang-he~1(1.Zhejiang University,Hangzhou 310027,China;2.Jiangxi University of Technology,Ganzhou 341000,China)

• 1:浙江大学
• 2:江西理工大学
• 3:浙江大学 杭州310027
• 4:赣州341000

摘要(Abstract)：

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.

关键词(KeyWords)： 烟囱;爆破切口;定向爆破;数学模型
Chimney; Blasting cut; Directional blasting; Mathematical model

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 李玉岐,焦永斌,谢康和
LI Yu-qi~1,JIAO Yong-bin~2,XIE Kang-he~1(1.Zhejiang University,Hangzhou 310027,China;2.Jiangxi University of Technology,Ganzhou 341000,China)

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