本文探討移動荷重作用於半無窮域表面的垂直變位，以有限元素法分析之。文中先以ABAQUS軟體分析靜態荷重，研究有限元素法之邊界及網格對於靜態反應的影響；其次利用Micro-SAP軟體分析等速移動荷重下的問題，數值算例分析正交異向性材料的地表反應，結果與移動荷重的解析解(Liou與Sung, 2008)作比較。
(註：Micro-SAP為朱聖浩教授所撰寫的一套有限元素分析軟體)

The displacement field on the surface of half-plane solid under constant moving loads analyzed by FEM. The ABAQUS software is utilized first to investigate the static response to see the effects of the infinite boundary and the mesh size used. Then, to analyze the problem of moving load, the Micro-SAP software is adopted. Numerical results of orthotropic materials are compared with the analytical solutions developed by Liou and Sung (2008).

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