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《Blasting》 2009-03
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Measures for Reducing Backward Action in Explosive Demolition of Frame Structure(2)

WEI Ting-feng,WEI Xiao-ling,FU Jian-qiu(Guangdong Hongda Blasting Co Ltd,Guangzhou 5100623,China)  
According to the document "Back sitting of frame and frame bent by explosive demolition(1)",we put forward some measures to reduce backward collapes in explosive demolition of frame structure.For in situ reinforce concrete frame,the way are collapse in place with back girder's end broken,collapse in place with all lower pillar broken,falling the c.g.of front and middle span with broken span by span,changing transverse collapse to lengthways collapse,only broken first floor in middle pillar,downward cutting and back structure,suitable reducing the height of cut and prolonging the delay time during span.For shear wall frame interaction structure,the ways are remain transverse and lengthways shear wall.For multi-span in situ frame structure remains the substructure of two back row pillars.All the measures validate the mechanism of backward and its calculation method,and approved by 13 engineering examples.
【CateGory Index】: TU746.5
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【Citations】
Chinese Journal Full-text Database 8 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 LIU Wei-zhu~1,CHEN Ming-jin~1,WANG Yin-sheng~1,FANG Xiang~2 (1.Military Commissary Office of Engineering Corps,Wuhan 430000,China; 2.Engineering Institute of Engineering Corps,University of Science and Technology, PLA,Nanjing 210007,China);Underwater Rock Blasting Before Building for Water Entering at Tianwan Nuclear Power Station[J];Blasting;2005-01
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