摘要
介绍了采用逐段定向坍塌法对1栋混合结构楼房的爆破拆除。逐段定向坍塌法爆破楼房可达到楼体结构在空中剪切破坏,逐段触地的爆破效果。该技术有效地减小单响齐爆药量,避免结构整体同时触地,对爆破振动、塌落振动的控制也有很好的效果。该技术还能解决楼体爆破时结构整体支撑不足的问题,使得楼体的支撑区随结构运动而不断变化,减小后侧坍散范围。通过精心的设计与施工,楼房的爆破效果与设计方案吻合,达到预期效果。
The explosive demolition of a brick-concrete building by gradual directional collapse was introduced. Through this technique ,the aim of shearing failure and gradual touchdown during ~the process of blasting demolition was achieved. This technique could effectively reduce the charge amount per delay, avoid the touchdown of the build- ing at the same time and effectively control the collapse vibration and blasting vibration, it also can solve the problem of the building support location, make the support location constantly changing during the process of explosive demolition and reduce the collapse range behind the buildings. Through exact design and construction, the blasting results were agreed with the blasting scheme, and reach the anticipated targets successfully.
出处
《爆破》
CSCD
北大核心
2011年第4期66-68,共3页
Blasting
关键词
爆破拆除
逐段坍塌
塌落振动
防护
explosive demolition
collapsing span by span
collapse vibration
protection
