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論文中文名稱:不同加速度歷時校正方法之比較研究 [以論文名稱查詢館藏系統]
論文英文名稱:A Comparative Study on Different Methods of Baseline Correction [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木工程系土木與防災碩士班
畢業學年度:105
畢業學期:第一學期
中文姓名:何祖皜
英文姓名:Chu-Hao Ho
研究生學號:102428103
學位類別:碩士
指導教授中文名:廖文義
指導教授英文名:Wen-I Liao
口試委員中文名:簡文郁;柴駿甫;趙書賢
中文關鍵詞:地震、基線校正、離散小波轉換,經驗模態分解、加速度歷時
英文關鍵詞:Earthquake, Baseline Correction, Discrete Wavelet Transform, Empirical Mode Decomposition, Acceleration Time History
論文中文摘要:強地動之加速度歷時記錄不僅為純粹之地表震動,尚還包含有複雜的些許噪訊,其中低頻噪訊會導致加速度歷時之基線出現偏移,而地震測站在經歷強烈地表運動後,其加速度感應器可能會發生變形或傾斜的現象,也會使得基線產生偏移之現象。基線偏移對加速度歷時本身影響甚小,但透過積分求取速度與位移歷時時,其偏移會被逐漸放大,從而對速度,位移歷時可能產生甚大的影響。因此,在使用加速度記錄時,需要進行基線校正,減少這些問題。本文研究主要對於921集集大地震部份歷時記錄、311日本東北大地震AKT006測站記錄以及一六層鋼結構構架振動台實驗之歷時資料,運用Iwan法、離散小波轉換以及經驗模態分解三種不同基線校正方法進行校正,並分析比較及探討三種不同方法校正的效果,由分析數值結果顯示,Iwan法對於修正地震的永久位移有良好的結果,但在針對一般振動台記錄時,還原出永久位移的效果不佳。離散小波轉換法分析上述三組數據,所獲得的永久位移與鄰近測站和位移計量測到的位移歷時有高度的一致性。經驗模式分解法對於311日本東北大地震取得之永久位移,有高度的一致性,對於其他兩組數據求出之位移結果則不盡理想。
論文英文摘要:Acceleration time history record after the earthquake is not only pure ground shaking, also contains a complex of noises, and low frequency noises resulted in drift of acceleration time history baseline, and also the acceleration sensor of the strong-motion station deformed or tilting resulted in drift of acceleration time history baseline, during the strong shaking of an earthquake. Baseline drift has little effect on acceleration time history, but the drift has a huge impact to be gradually enlarged by integrating the velocity time history and the displacement time history. Therefore, when using the acceleration record, it has to corrected baseline, to reduce these problems. This study is used the Iwan method, discrete wavelet transform method and empirical mode decomposition three different patterns of baseline correction methods to analyze and compare the acceleration data of 921 Chi-Chi earthquake stations, station AKT006 of 311 Tohoku earthquake and the test of 6-story steel frame on a shaking table to investigate the effect of three different methods. Numerical results from the analysis show the Iwan method for correcting seismic permanent displacement with good results, but for test of the shaking table record, there has poor results of restore the permanent displacement. The permanent displacement of discrete wavelet transform analysis for the mentioned above three data, has highly and consistency result with the neighboring station and LVDT. Empirical mode decomposition method for the permanent displacement of 311 Tohoku earthquake in Japan has highly and consistency result, but the displacement of the other two sets of data obtained results are not ideal.
論文目次:中文摘要 i
英文摘要 iii
誌謝 v
目 錄 vii
表目錄 ix
圖目錄 xi
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻回顧 2
1.3 研究內容 4
第二章 不同基線修正方法之理論 5
2.1 IWAN法基線修正 5
2.2 離散小波轉換 9
2.2.1 理論 9
2.2.2 三階段演算法 14
2.3 經驗模態分解 21
2.3.1 理論 21
2.3.2 改進EMD法 25
第三章 不同校正方法比較 39
3.1 921集集大地震 39
3.1.1 IWAN法於921集集大地震 39
3.1.2 離散小波轉換於921集集大地震 40
3.1.3 經驗模態分解於921集集大地震 40
3.2 311日本東北大地震 41
3.2.1 IWAN法於311日本東北大地震 41
3.2.2 離散小波轉換於311日本東北大地震 42
3.2.3 經驗模態分解於311日本東北大地震 42
3.3 六層鋼結構構架試驗 43
3.3.1 IWAN法於六層鋼結構構架試驗 44
3.3.2 離散小波轉換於六層鋼結構構架試驗 44
3.3.3 經驗模態分解於六層鋼結構構架試驗 45
第四章 結論 123
參考文獻 126
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2. Chia-Yen Peng and W. D. Iwan, “some observations on data compression for digital strong-motion accelerograms”, Bulletin of the Seismological Society of America, Vol. 80, No. 2,1990, pp. 252–266.
3. 謝俊舉、溫增平、高孟潭,「利用強震數據獲取汶川地震近斷層地面永久位 移」,地震學報,第三十五卷第三期,2013
4. Shen-Ming Chen and Chin-Hsiung Loh, ”Estimating Permanent Ground Displacement from Near-Fault Strong-Motion Accelerograms”, Bulletin of the Seismological Society of America, Vol. 97, No. 1B, 2007, pp. 63–75.
5. James S. Walker, “A primer on Wavelets and Their Scientific Applications”, Chapman and Hall/CRC, Boca Raton, Florida,1999.
6. Jyun-Yan Huang, Kuo-Liang Wen, Xiao-Jun Li, Jun-Ju Xie, “Coseismic Deformation Time History Calculated from Acceleration Records Using an EMD-Derived Baseline Correction Scheme: A New Approach Validated for the 2011 Tohoku Earthquake”, Bulletin of the Seismological Society of America, Vol. 103, No. 2B,2013, pp. 1321– 1335.
7. 黃雋彥,「強地動特徵與隨機式地動模擬之場址修正」,博士論文,國立中央大 學地球科學學系,2014
8. David M. Boore ,” Effect of Baseline Corrections on Displacements and Response Spectra for Several Recordings of the 1999 Chi-Chi, Taiwan, Earthquake “, Bulletin of the Seismological Society of America, Vol. 91, 2001, pp. 1199–1211.
9. David M. Boore, Christopher D. Stephens, and William B. Joyner,” Comments on Baseline Correction of Digital Strong-Motion Data: Examples from the 1999 Hector Mine, California, Earthquake”, Bulletin of the Seismological Society of America, Vol. 92, No. 4,2002, pp. 1543–1560.
10. Emmanuel H. Javelaud and Hitoshi Morikawa ,”Reliable Displacement Response Spectra at Long Periods in the Near Field of Large Earthquakes”, Bulletin of the Seismological Society of America, Vol. 103, No. 4, 2013, pp. 2534–2539.
11. N. E. Huang, C. C. Chern, K. Huang, L. W. Salvino, S. R. Long, and K. L. Fan, “A New Spectral Representation of Earthquake Data: Hilbert Spectral Analysis of Station TCU129, Chi-Chi, Taiwan” , Bull. Seismol. Soc. Am., 91(5), 2001,pp.1310-1338.
12. Zhao-Hua Wu and Norden E. Huang,” Ensemble Empirical Mode Decomposition: A Noise-Assisted Data Analysis Method” ,Advances in Adaptive Data Analysis, Vol. 1, No. 1,2009, pp. 1–41.
13. 何郁淇,「利用建築結構反應訊號進行震後耐震快速評估之研究」,碩士論文, 國立台北科技大學土木與防災研究所,2016
論文全文使用權限:同意授權於2016-09-23起公開