13层框剪结构商务大楼爆破拆除BLASTING DEMOLITION OF A 13-STOREY BUILDING IN SHEAR FRAMEWORK
赖经建,魏晓林,谭卫华
LAI Jing-jian,WEI Xiao-lin,TAN Wei-hua(Gaungdong Hongda Blasting Co.
摘要(Abstract)：
13层钢筋混凝土框-剪结构、平面V形大楼,3排柱两跨43m高,采用沿中线整体单向(尖端)倾倒爆破拆除。V型大楼不从中线预破开而整体倾倒,这就是新的拆除尝试。切口朝尖端方向,前排柱中线区炸高12m,两侧区炸高8.7m,后排柱炸高0.3m,且中部、前、中排柱先爆,两侧柱滞后半秒迟爆,楼房顺利倒塌。由此证明,切口中高、两侧低,起爆先中而后侧,先前柱而后柱,爆破参数沿中线对称,就可实现V形楼整体倒塌。
Standing at 43m height with two spans and three rows of column,the building was a 13-storey and V-shaped office building in shear framework,which was demolished in the way of collapsing in one direction along its centerline.The demolition was characterized by the collapsing intack without the use of presplitting along the centerline,marked a new attempt in this blasting demolition.In the blasting scheme,the precut was oriented to the tip end,with the blasting height being 12m within the centerline zone of the front row and 8.7m in the zone of the two sides.The blasting height for rear column was 0.3m,with central section,front and central columns being blasting in advance half second prior to the blasting for the columns of the two sides.The designation resulted in a perfect collapsing of the building,showing that the considerate blasting scheme could be responsible for a V-shaped building collapsing in-tack.
关键词(KeyWords)：
爆破拆除;V型建筑;框-剪结构;延时爆破
Blasting demolition;V-shaped building;Shear-framework construction;Delay blasting
基金项目(Foundation):
作者(Author):
赖经建,魏晓林,谭卫华
LAI Jing-jian,WEI Xiao-lin,TAN Wei-hua(Gaungdong Hongda Blasting Co.