由於樁基礎工程在工程上使用頻繁且日趨重要，現地載重試驗乃一重要且可靠性高的分析方式，我的研究動機為將現地試驗結果和電腦分析結果做一詳細比較，試圖使分析出結果貼近現場。
本研究除了比較理論及經驗t–z曲線之差異外，分析方法為取用甲光電股份有限公司－專案南部某園區新建工程的地基調查報告，土壤參數及鑽探報告配合該公司的基樁載重試驗報告書，使用程式TZPILE分析，利用各t-z曲線分析出之載重位移關係跟現場試樁結果作比較，了解其差異，並延伸探討其相關輸出數據結果，接著修改理論和經驗t-z曲線 (z-factor) 使載重位移關係圖和現場情況更為相近。最後採用另兩支樁作修改後的驗證。
分析結果和結論表示，由於採用不同的樁徑樁長，加上土層參數的差異，各t-z曲線間本身就存在差異，在作分析時的所需參數也可能因為不完整而自行假設，理論t-z曲線中所需的參數比現場的更多，各分析結果皆有差異，但各曲線分析結果的差異仍在合理範圍內，亦有較適合此現地的t-z曲線作分析，後續皆會說明各t-z曲線作分析時與此現地差異之源由。

This study not only compares the differences between theoretical t-z curves and empirical t-z curves, but also provides modifications on the obtained theoretical and empirical t-z curves to (z-factor) make their resulting load-displacement curve more similar to actual cases. The simulation software, TZPILE, was used with data obtained from the base investigation report, soil parameters, and borehole information from the new facility construction site of 甲 Optoelectronics Co., Ltd. at southern Taiwan, to compare the simulated load-displacement relationship to the results of pile load tests, using t-z curves. Two piles were used to confirm the validity of the proposed modification.
The differences between each t-z curves were caused by differences in pile length, pile diameter, and soil properties. Assumptions were also made for missing soil parameters during the analysis, and more parameters are required for theoretical t-z curves than site testing. In conclusion, these differences were proven minor, and there are preferable t-z curve to be used for this particular site. The differences between the results of t-z curve simulation and field testing results will also be discussed in this study.

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