高层框架楼房单向折叠爆破拆除

以哈尔滨市一座17层框架-剪力墙结构楼房的成功爆破拆除为例,介绍在复杂环境下,由于高层框架楼房倒塌距离受限,运用单向折叠控制爆破技术,有效控制高大楼房倒塌范围和实现最佳解体破碎效果的方法和措施,同时介绍有效控制高层楼房爆破飞石、爆破振动和塌落振动的具体方法和措施。重点剖析了爆破切口部位、角度、起爆顺序、起爆延时时间等因素对高大楼房倒塌距离产生的影响,为复杂环境下对高大框架-剪力墙结构楼房实施单向折叠倒塌爆破提供参考。

Demolition of high-rise frame building by unidirectional folding blasting

Taking the successful blasting demolition of a 17-story frame-shear wall structure building in Harbin as an exam-ple,the collapsed distance of the high-rise frame building is limited under complicated environment and unidirectional folding control blasting technology using to effectively control the collapse extent of tall building is introduced.The methods and meas-ures to achieve the best disintegration effect are introduced.At the same time,the concrete methods and measures to control the blasting fly rocks,blasting vibration and collapse vibration of the high-rise building are introduced.The influence of blas-ting incision location,angle,detonation sequence and delay initiation time on collapse distance of tall building is analyzed in de-tail,which could provide a reference for unidirectional folding blasting of tall frame-shear wall structure building in complex en-vironment.