51m高水塔的单向折叠爆破拆除DEMOLITION OF A WATER TOWER WITH A HEIGHT OF 51 METERS BY UNIDIRECTIONAL FOLD BLASTING
徐建涛
XU Jian tao (Longrui Blasting Demolition Engineering Co Ltd ,Jilin City 132011,China)
摘要(Abstract)：
一座高 5 1m的钢筋混凝土水塔 ,其上部的水池由 10根断面尺寸为 1 6m× 0 7m的立柱支撑。在场地有限的条件下 ,采用了单向折叠爆破的方案。水池先翻转再自由落地 ,缩短了倒塌距离 ,减小了触地震动。文中介绍了爆破参数设计、预拆除、稳定性分析、触地振动速度的验算以及所采取的安全措施等。
The water tank on top of a water tower with 51 meter height and reinforced concrete structure is supported by 10 posts with sectional size of 1 6m by 0 7m In the condition of limited field,a scheme of unidirectional fold blasting is adopted Freely falling of the water tank following its turnover makes the collapsing distance and touchdown vibration reduced The design of basting parameters,pretreatment,stability analysis,the check of touchdown vibration velocity,safety precautions and others are introduced in this paper
关键词(KeyWords)：
水塔;单向折叠倒塌;拆除爆破;触地震动
Water tower;Unidirectional fold collapsing; Demolition blasting; Touchdown vibration
基金项目(Foundation):
作者(Author):
徐建涛
XU Jian tao (Longrui Blasting Demolition Engineering Co Ltd ,Jilin City 132011,China)