| 基于小波分析的建(构)筑物爆破振动安全评估 |
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| 引用本文： | 中国生,房营光,谷任国,赵奎.基于小波分析的建(构)筑物爆破振动安全评估[J].爆炸与冲击,2009,29(1):35-40. |
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| 作者姓名： | 中国生 房营光 谷任国 赵奎 |
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| 作者单位： | 1.华南理工大学土木与交通学院，广东 广州 510641； |
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| 基金项目： | 中国博士后科学基金，江西省教育厅科技项目 |
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| 摘 要： | 基于现场实测爆破振动数据，采用小波分析技术对爆破振动信号的能量特征进行分析，得到了信号不同频带上的能量分布，根据受控结构体对爆破振动动态响应特征，探索建立了能考虑爆破振动的强度、频率和持续时间以及受控建(构)筑物本身的动态响应特性(固有频率和阻尼比)等因素的综合安全判据响应能量判据，并用工程实例验证了该判据的可行性和可靠性。响应能量判据能准确地描述爆破振动对受控建(构)筑物的影响程度，较现行的速度-频率安全判据，更能全面地反映爆破振动对建(构)筑物危害的本质。
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| 关 键 词： | 爆炸力学 安全判据 小波变换 爆破振动 固有频率 阻尼比 响应能量 |
Safety assessment of structures by blasting vibration based on wavelet analysis |
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| ZHONG Guo-sheng,FANG Ying-guang,GU Ren-guo,ZHAO Kui.Safety assessment of structures by blasting vibration based on wavelet analysis[J].Explosion and Shock Waves,2009,29(1):35-40. |
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| Authors: | ZHONG Guo-sheng FANG Ying-guang GU Ren-guo ZHAO Kui |
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| Affiliation: | 1.School of Civil & Transportation, South China University of Technology, Guangzhou 510641, China;2.School of Resources & Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China |
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| Abstract: | According to the existing blasting vibration live data,the different-frequency-band energy distribution of the blasting vibration signals was attained by the wavelet analysis technology.Based on the characteristics of dynamic response from the controlled structures by blasting vibration,a multi-factor blasting vibration safety criterion was proposed,also called the response energy criterion,in which taking the total influence of the intensity,frequency and duration of vibration and the characteristics(natur... |
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| Keywords: | mechanics of explosion safety criterion wavelet transform blasting vibration natural frequency damping ratio response energy |
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