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《Explosive Materials》 2007-01
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AN Analysis of Dynamic Stress Response Chara cteristic on Concrete Structure Chimney Demolition

Xie Feihong①,Wang Xuguang②,Yu Yalun①,Luo Guanwei③①School of Civil and Environmental Engineering,University of Science and Technology Beijing(Beijing,100083)②Beijing General Research Institute of Mining and Metallurgy(Beijing,100044)③School of Mechanical and Electronic Engineering,Lanzhou Jiaotong University (Gansu Lanzhou,730070)  
In the process of the chimney orientation control blasting collapse,the blasting effect not only causes to the structure of the position demolished,moreover,the stress wave caused by blasting will produces major effect on the superstructure.In order to clarify the reason it produces,movement wave equation of motion was used to the movement wave rule under the different detonation condition,as well as in the different time detonation stress wave function behavior and the structure particle displacement produced in the chimney.The time and the position for the appearence of maximum stretch stress and structure particle displacement have be discovered,and the fitting distribution curve is drew up for maximum stretch stress,and particle displacement.Through the computation analysis of blasting effect on the 100m concrete structure chimney,it is thought the chimney orientation control blasting suitably to use the detonation network with low section and the short delay time difference.
【Fund】: 国家自然科学基金项目(10572055 50475109)
【CateGory Index】: TU746.5
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