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| 基于小波分析的爆破地震效应评估 | |
| 引用本文： | 凌同华,李夕兵,陈文胜.基于小波分析的爆破地震效应评估[J].振动与冲击,2007,26(2):124-127. |
| 作者姓名： | 凌同华 李夕兵 陈文胜 |
| 作者单位： | 1. 长沙理工大学桥梁与结构工程学院,长沙,410076;中南大学资源与安全工程学院,长沙,410083 2. 中南大学资源与安全工程学院,长沙,410083 3. 长沙理工大学桥梁与结构工程学院,长沙,410076 |
| 基金项目： | 国家自然科学基金;湖南省自然科学基金 |
| 摘 要： | 通过对爆破震动信号时能密度曲线的积分值TEDI（Integral of the Time-Energy，Density）与爆破震动三要素（即震动的幅值、频率和持时）进行关联分析，创造性地提出了用TEDI值作为评估爆破震动效应强弱的定量指标，初步建立了用TEDI值作为考核指标的爆破震动损伤统一安全判据。当TEDI≥15时，爆破震动对结构体将造成危害，并用实例验证了该判据的可行性和可靠性。该判据较之以往的“独立阈值理论”以及结合震动主频的峰值强度判据来说，更能全面地反映爆破震动危害的本质。 |
| 关 键 词： | 爆破地震效应 小波变换 时-能密度分析法 |
| 修稿时间： | 01 24 2006 12:00AM |
EVALUATION OF BLAST SEISMIC EFFECT BASED ON WAVELET ANALYSIS |
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| LING Tong-hua,LI Xi-bing,CHEN Wen-sheng.EVALUATION OF BLAST SEISMIC EFFECT BASED ON WAVELET ANALYSIS[J].Journal of Vibration and Shock,2007,26(2):124-127. | |
| Authors: | LING Tong-hua LI Xi-bing CHEN Wen-sheng |
| Abstract: | By analyzing the relevancy of the integral of the time-energy density(TEDI) to the three factors of blast vibration(amplitude,frequency and duration of blast vibration),the quantitative index to evaluate strength or feebleness of blast vibration effect by the use of TEDI is put forword,and a preliminary unified criterion for damage induced by blast vibration is constituted.When TEDI reaches 15,blast vibration begins to damage the constructions,and the feasibility and reliability of the criterion are validated by several instances.This criterion reflects the essence of blast vibration damage more comprehensively than the theory of independent threshold value and its related safety criterion considering the effect of frequency. |
| Keywords: | TEDI |
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