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題 名 | 表面波譜法評估土石壩體材料動態特性=The Evaluation of Dynamic Properties of Earth Dam Using Spectral Analysis of Surface Wave |
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作 者 | 倪勝火; 周廷彰; 江福壽; 盧炳堃; 呂學育; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 19:4 2007.12[民96.12] |
頁 次 | 頁493-503 |
分類號 | 441.2 |
關鍵詞 | 雷利波; 表面波譜法; 土石壩; 現地試驗; Rayleigh wave; SASW; Earth dam; In-situ test; |
語 文 | 中文(Chinese) |
中文摘要 | 表面波譜法(SASW)為使脈衝震源產生表面波,利用頻散曲線求取土層剪力波速剖面。試驗時使用不同震源,並佈設多個受波器量測以取得完整頻散曲線。分析時利用平均演算法求得平均頻散曲線,並以改良Satoh近似反算法求得土層試算參數進行反算分析,最後和下孔式探測法試驗結果進行比對。本文乃針對曾文水庫之土石壩體進行SASW之試驗研究分析,研究結果顯示,表面波譜法推估之土層剪力波速與下孔式探測法之平均差異值約7.5%。顯示利用表面波譜法可於不破壞壩體結構條件下求得壩體材料動態特性,為一經濟快速有效的壩體材料參數檢測法。 |
英文摘要 | The spectral analysis of surface wave (SAW) method is an in situ testing method which is recently developed. This method uses a transient impact to generate surface wave on the ground surface, and measures the ground surface response to determine the shear wave velocity profiles of soil deposits. Different impact-type sources were used to generate broad range frequencies domain, and used multi-receivers to determine the complete dispersion curve. By applying an inversion process, the profile parameters obtained using the modified Satoh's method was compared with those of using down-hole test. The paper presents the study of in-situ investigation of Tsengwen earth dam using SASW method. The results show that the error is within 7.5% as the results obtained using SASW method comparing with those down- hole data. The method can evaluate the dynamic property of earth dam quickly and cost effectively. |
本系統中英文摘要資訊取自各篇刊載內容。