摘要
待拆13层钢筋混凝土框剪结构物是病房楼东侧的一部分,东西长11 4m、南北宽18 6m、高45m,剪力墙厚20cm和25cm。采用单向折叠定向倒塌的方案,使结构从南到北逐段微差起爆和解体。文中介绍了爆破切口高度的确定、钻孔爆破参数的选取、爆区的划分、起爆顺序、预处理以及安全防护措施。同时对倒向偏差的原因进行了分析。
The reinforced concrete f rame shear wall building to be demolished is eastern portion of a ward building It has an east to we st length of 11 4 meters,a south to north width of 18 6 meters,a heigh t of 45 meters and shear wall thic kness of 20 or 25 centimeters The one directional fold collapsing sc heme is used to blast and disinteg rate the construction section by section In this paper,determinatio n of blasting cut height,selection of drilling and blasting parameter s,division of blasting areas,priming se quence,pretreatment and safe ty precautions are introduced At t he same time,the causes for the de viation of collapsing direction are analyzed
出处
《工程爆破》
2003年第2期22-25,共4页
Engineering Blasting
关键词
框剪结构
楼房
爆破拆除
病房楼
倒向偏差
Frame shear wall structu re
Blasting demolition
Pretreatmen t
Controlled blasting
