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《Blasting》 2007-04
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Study on Dynamics Equation Approximation of Blasting Demolition of Structures(2)

WEI Xiao-lin1,2,FU Jian-qiu1,2,WANG Xu-guang1,CUI Xiao-rong2(1.Beijing University of Science and Technology,Beijing 100083,China;2.Guangdong Hongda Blasting Engineering Co Ltd,Guangzhou 510055,China)  
The double-bodies movement of frame,storehouse and framed bent caused by blasuing front and central pillars are studied,and the movement can be simplified as one freedom body of behind pillar and another freedom body of the structure which is up the cutting area.It is discovered by surveying in site that body mass centre tends to fall along gravitational line.Accordingly approximate solutions can be induced from numerical solution of dynamics equations,the error between them is less than 10%,which ia acceptable in engineering application.Based on this study,the falling posture of cast-in-site carriage,assembly reinforced concrete frame and framed bent when they are demolished by blasting can be calculated conveniently.
【CateGory Index】: TU311.3;TU746.5
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