加勁土壤由於施工快速、造價低廉及吸能耐震等優點，目前已廣泛應用於大地工程中。而本研究擬針對加勁土壤結構力學機制作更進一步之探討，以不同速率與不同圍壓在拉出試驗中，探討地工格網與土壤的互制作用。本研究目的在於希望經由力學探討與分析，討論現行設計方法合理性，並期能減少工程界對此一工法疑慮，達到推廣此工法之應用。
本研究擬使用大型拉出試驗儀，依據ASTM D6706之試驗步驟分別以三種不同拉出速率、圍壓進行試驗，比較軟式與硬式地工格網受覆土載重作用下拉出之力學行為與應變發展趨勢。其中，分別量測格網上三個不同點位之位移，以了解格網內部變形行為，並藉由地工格網之極限抗拉強度、材料模數及拉出過程中土壓力變化，觀測並分析試驗結果以了解其作用機制。
由本研究結果顯示，不論軟式或硬式地工格網之應變皆隨著土壤圍壓增加而增大，其抗拉強度亦有相同之趨勢。地工格網受拉過程中，變形與張力幾乎集中於前端。

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