| 水下爆炸加密基床引起地基及水中结构二次振动的试验研究 |
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| 引用本文： | 李世海,燕琳,郭铁栓. 水下爆炸加密基床引起地基及水中结构二次振动的试验研究[J]. 工程爆破, 1999, 5(2): 15-20,4 |
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| 作者姓名： | 李世海 燕琳 郭铁栓 |
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| 作者单位： | 1. 中国科学院力学研究所北京 100080
2. 国家地震局,北京 100036 |
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| 摘 要： | 通过工程试验研究，观测到了水下爆炸引起的地基及水中结构的二次地震波现象．分析试验结果，总结了地基及结构振动的规律，指出二次振动现象与水中爆炸气泡的脉动有关。在已有水下爆炸理论基础上，通过引用等效高度的概念，借助量纲分析给出了计算群药包水下爆炸气泡脉动周期的经验公式。
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| 关 键 词： | 加密基床 水下爆炸 二次振动 气泡脉动 |
STUDY ON SECONDARY VIBRATION OF FOUNDATION AND SUBMERGED STRUCTURES INDUCED BY UNDERWATER EXPLOSION FOR DENSIFYING FOUNDATION BED |
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| Li Shihai,Yan Lin. STUDY ON SECONDARY VIBRATION OF FOUNDATION AND SUBMERGED STRUCTURES INDUCED BY UNDERWATER EXPLOSION FOR DENSIFYING FOUNDATION BED[J]. Engineering Blasting, 1999, 5(2): 15-20,4 |
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| Authors: | Li Shihai Yan Lin |
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| Abstract: | By experiments, the phenomena of secondary vibration of foundation and submerged structures induced by underwater explosion were observed. By the analysis of experimental result, the vibration regularity of foundation and submerged structures was summarized. It is pointed out that the secondary vibration phenomena are related to bubble pulse with underwater explosion. Based on present underwater explosion theories, an empirical formula for calculating the bubble pulse period of underwater multi-charge explosion is given by means of the concept of equivalent height and dimensional analysis. |
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| Keywords: | Densification of foundation bed Underwater explosion Secondary vibration Bubble pulse |
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