採用二維有限差分軟體FLAC(Fast Largragian Analysis of Continua)模擬美國華盛頓大學Adam Perez(1999)振動台試驗加勁邊坡土體之動態行為，並使用Duncan(1980)提出的雙曲線土壤模數模型修正不同圍壓下的土壤模數。於建立數值模型時，先在底面鋪上一層厚約3公分的砂土，再鋪設底層加勁材，減低底層加勁材在底面上產生的滑動現象，進而改善數值模型。
　　結果顯示，加勁材強度增加或加勁材間距減小，在動態行為後，加勁邊坡土體行為更趨向整體化，且在土體後方產生隆起；加勁邊坡的降伏速度會隨著加勁材的強度增加、加勁材的間距減小或加勁材的埋設長度增加而增加。

　　The two dimensional finite difference software FLAC(Fast Largragian Analysis of Continua), is adopted to simulate the dynamic behavior of a reinforced earth embankment of “Shaking Table Test” which established by Adam Perez(1999)in University of Washington USA; the hyperbolic soil model established by Duncan and Chang is used to modify the soil modului under different confined compressions. The numerical model of the reinforced earth embankment is improved by placing a sand layer of 3 cm thickness above the last layer of reinforcement material. It may reduce the sliding effect in the last layer of reinforcement usually occurred in the field.　
　　The results of study indicated that as the strength of the reinforcement increase on the spacing of the reinforcement decrease, the behavior of the embankment turn integrating as the embankment under dynamic conditions the bulge of soil may be generated at the back of the embankment. It also found that the yielding rate of the reinforced embankment increases as the strength of the reinforment on the embedded length of the embankment increases; however, the yielding are may decrease as increase of the spacing of the reinforcement.

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