臺灣博碩士論文加值系統

　　了解了土壤動態參數就可針對此特性來進行地盤改良、改善建物設計以避免生命財產的損失。而表面波譜法(Spectral Analysis of Surface Wave Method，簡稱SASW)即為近年來最新興發展於評估土壤動態參數之試驗方法。由於此法進行試驗時僅需將受波器置於測體表面，且對測體之影響屬微小應變（r<0.001%），故此試驗屬非破壞檢測範疇，可簡便、快速求取測體動態參數。
　　本研究重新分析黃俊豪(2003)於中南部國中小學之實驗數據。為求平均頻散曲線的精確性，使用雙重步驟，先使用套裝軟體WinSASW(Joh 1992)來進行maskin與
求取平均頻散點位，再利用江福壽（2004）提出之「改良式延伸趨勢法」得到平均頻散曲線，及其「改良式Satoh剖面評估法」加以評估現地剪力波速剖面。
　　將分析結果與黃俊豪(2003)之結果做一綜合比較，並證實本研究所採用之資料分析方法合理可行。本文並參考李咸亨(1990)與Kim(2001)提出之剪力波速迴歸分析理論做一回歸探討。結果顯示本研究對剪力波速與N值回歸分析之結果與李咸亨之結論有其吻合之處。而本研究也證實了Kim所提出之理論較不適用於深層土壤。

　　The right dynamic parameters of soil deposits will give a better design in structure which will reduce people live and property loss during natural hazard. A seismic method called Spectral-Analysis-of-Surface-Waves (SASW) has been developed for determining soil dynamic parameters in situ. All SASW tests are performed at small strain level (r<0.001 %) with instrumentation placed only on ground surface. Thus, SASW test is a type of nondestructive test.
　　In this study, the data getting from elementary schools in southern Taiwan by Huang (2003) is re-analyzed. In order to modify the average dispersive curve, two steps can be used. First, masking the phase angle data to get average dispersive points by using the software named WinSASW (1992). Furthermore, modified Joh's method and modified Satoh's method which were proposed by Jiang (2004) are used to obtain the average dispersive curve and soil shear-wave velocity for the soil layers.
　　After comparing the result with Huang's result, the analysis approach used in this study is verified.According to the regressive method from Li (1990) and Kim (2001), further analysis on the relation among soil shear-wave velocity, STP N value, and dry unit weight are discussed. The result shows that Kim’s approach is not suitable for deep soil layers.

摘要　I
Abstract　II
致謝　III
目錄　IV
表目錄 VII
圖目錄 VIII
符號說明　XVIII

第一章　緒論　1
　1.1研究背景　1
　1.2研究目的　2
　1.3研究方法　3
　1.4研究內容　4

第二章　文獻回顧　7
　2.1波與波傳現象　7
　2.2波傳原理　7
　2.3國外相關研究文獻　9
　2.4國內相關研究文獻　11

第三章　表面波譜法之試驗分析　17
　3.1前言　17
　3.2表面波譜法之現地量測　17
　　3.2.1訊號處理　18
　　3.2.2現地量測之步驟　20
　3.3頻譜分析　21
　　3.3.1頻率反應函數　21
　　3.3.2褶合定理(Convolution Theorem)　22
　　3.3.3頻譜分析　23
　　3.3.4相關函數值(coherence function)　24
　　3.3.5相互遮蔽(Interactive Masking)　25
　3.4頻散曲線分析　26
　　3.4.1建立頻散曲線　27
　　3.4.2平均試驗頻散曲線　28
　　3.4.3延伸趨勢法　28
　　3.4.4改良式延伸趨勢法　30
　3.5理論反算分析　31
　　3.5.1反覆正向模式分析(Iterative Forward Modeling Analysis)　31
　　3.5.2反向分析 (Inversion Analysis)　31
　　3.5.3 Satoh近似反算法　31
　　3.5.4 Satoh改良式剖面評估法　33
　3.6剪力波速回歸分析　33
　　3.6.1剪力波速回歸變數　33
　　3.6.2重要回歸經驗公式(N與D)　35
　　3.6.3剪力波速與N和D之迴歸模型　37
　　3.6.4剪力波速與土層壓密之關係　38

第四章　資料分析之結果討論　54
　4.1前言　54
　4.2試驗設備　54
　4.3試驗方法與步驟　56
　4.4試驗地點　58
　4.5剪力波速之分析結果與比較　58
　　4.5.1剪力波速之比較結果　59
　　4.5.2剪力波速與N值之回歸分析討論　60
　　4.5.3剪力波速與單位密度之回歸分析討論　62

第五章　結論與建議　83
　5.1結論　83
　5.2建議　84

參考文獻　85
附錄A　南部各國中小學之相位譜masking分析　89
附錄B　WinSASW平均頻散點與改良式延伸趨勢法平均頻散曲線　131
自述　

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