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建(构)筑物爆破拆除振动的研究以塌落振动为主导方向。利用混凝土块的重复倾倒来模拟建(构)筑物爆破拆除的倾倒过程,并采集由此产生的塌落振动信号。探索减震沟内填充物变化对塌落振动衰减的影响。在倒塌方向开挖减震沟,减震沟内填充物依次为空气、黄沙、水,对采集的数据信号进行分析。对测点2采集的试验数据与无沟相比分析可知,空气、水和黄沙最大峰值振速依次下降了54.51%、28.12%和48.43%。综合分析可知,填充物为空气时减震效果最好。通过HHT法分析可知,测点2在填充物分别是空气、水和黄沙时,与无沟相比能量衰减62.5%、20.8%和37.5%,进一步证明填充物为空气时,减震效果最好。
Study on Building (Structure) Building Blasting and Demolition Vibration is dominated by slump vibration. The repeated dumping of concrete blocks is used to simulate the dumping process of building (structure) blasting demolition, and the resulting slump vibration signals are collected. Exploring the Influence of Filler in Filler Gutter on Vibration Attenuation of Slump. Excavation ditch in the direction of the collapse of ditch, damping ditch filling followed by air, sand, water, the acquisition of the data signal analysis. The experimental data collected at measuring point 2 is compared with that of no-groove data. The maximum peak vibration velocity of air, water and sand decreased 54.51%, 28.12% and 48.43% respectively. Comprehensive analysis shows that the damping effect of the filler when the air is best. HHT analysis shows that when the fillings are air, water and yellow sand respectively, the energy attenuation is 62.5%, 20.8% and 37.5% less than that of the non-groove, which further proves that when the filler is air, the damping effect is the most it is good.