| 金马大厦折叠爆破拆除塌落与爆破振动分析 |
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| 作者单位： | ;1.武汉科技大学理学院;2.武汉科技大学理学院;3.武汉科技大学理学院 武汉 430081;4.武汉 430081 |
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| 摘 要： | 结合大连金马大厦双向折叠爆破拆除工程实例,回归分析了大楼拆除爆破振动和塌落振动的衰减规律,得到了K值和α值。分析了振动波形的时间历程,整个波形主要有2次爆破振动和1次塌落振动。对比分析了这两种振动的速度及频率特征,结果是塌落振动比爆破振动速度更大,是对周边建(构)筑物影响的主要因素;塌落振动比爆破振动的频率更低,更易引起建(构)筑物共振,因此振速和主振频率应作为城市爆破拆除的安全判据。
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| 关 键 词： | 高层建筑物 折叠爆破 爆破振动 塌落振动 对比分析 |
DEMOLITION OF A REINFORCED-CONCRETE WINE-MAKING RECTANGULAR POOL BY WATER-PRESSURE BLASTING |
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| Abstract: | As a practical engineering example, demolition of a semi buried reinf o rced concrete wine making rectangular pool by water pressure blasting is intr odu ced A difference between the charge weights calculated by an empiric formula a nd theoretical formula respectively is analyzed, and the method and steps for d et ermining the charge weight for water pressure blasting are expounded It is po i nted out that for less depth of water in a pool, the immersion depth of a charg e sh ould be ensured to be greater than the distance of the charge to any wall of the pool so that the shock action of explosive force on walls of a container is not weakened |
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| Keywords: | Water pressure blasting Demolition blasting Equivalent radius He at of detonation at constant volume |
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