【摘要】 爆破震动对建(构)筑物的影响实质是能量的传递,能量法可较好地体现震动强度、频谱特性,特别是震动持续时间对建(构)筑物破坏的综合影响。瞬时输入能量概念体现了震速与频率的共同作用,建(构)筑物受震破坏主要决定于最大瞬时输入能量的大小。从爆破震动能量破坏机理出发,以能量反应方程为基础,结合瞬时输入能量概念,基于Hilbert谱提出了爆破震动瞬时输入能量模型和最大瞬时输入能量计算方法。更多还原

【Abstract】 Blast-induced vibration of the surrounding buildings(structures) essentially is caused by energy transfer.The combined effect of vibration intensity,spectrum characteristic,especially vibration duration on the damage of buildings can be reflected by energy method.The concept of momentary input energy can embody the combined action of vibration velocity and frequency.The damage of buildings is mainly depended on the maximum momentary input energy of blast vibration wave.In this paper,from the viewpoint of the damage mechanism of blast vibration energy,based on energy reaction equation,combined with the concept of momentary input energy,on the basis of Hilbert spectrum method,a model of momentary input energy of blast-induced vibration and the calculation method of the maximum momentary input energy are brought forward.更多还原