有鑑於大地工程對於CPT圓錐貫入試驗越來越重視，並且對於土壤參數的量測具有良好的效果，同時可取得連續的資料，相較於其他現地試驗更能了解土層的變化。前人提出三種CPT圓錐貫入試驗評估黏土不排水剪力強度之經驗式，然而選用不同的方法估算所得到的結果並不相同，並無法得知何者較能反應黏土強度，因此蒐集全球各地資料評估各種經驗式模型的趨勢及不確定性加以探討其之間的關係，然而不確定性評估結果相較於前人研究範圍為大，探討其原因可能前人屬於區域性的評估結果，而不適合全球各地所使用。

Due to its high consistency in determining continuous soil profiles, the piezo-eletrical cone penetration test (CPTU) is recently becoming more and more popular as an in situ test method. This study examines the transformation uncertainties of three well known empirical equations that correlate CPTU readings to the undrained shear strengths of clays. Emphasis is placed on the “global” transformation uncertainties. A global database of CPTU tests are compiled and detailed statistical analyses are taken to address the above issue. It is concluded that the local transformation trends for the correlations may be quite different from the global trend, while the global transformation uncertainties are usually quite larger than the local ones

王統立(2000)，「高細料含量粉土細砂中CPT之標定試驗」，國立交通大學土木工程學系碩士論文。
何家榮(1999) ，「圓錐貫入試驗中土壤音壓之研究」，國立中央大學土木工程學系碩士論文。
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