瀝青混凝土由荷重引起的材料變形是由彈性、塑性、黏彈性和黏塑性等四個分量組成，材料行為甚為複雜，而其中塑性和黏塑性分量所結合的性質，是導致瀝青材料產生永久變形之原因，亦即車轍破壞的主要來源。因此，完整的考慮瀝青材料之彈性、塑性、黏彈性和黏塑性行為，才能對車轍值做適當的預測。本研究中，利用有限元素程式建立單層瀝青鋪面，以潛變理論為基礎，採用時間硬化律和應變硬化律來模擬彈-黏-塑材料模式中的黏塑性分量，將一次移動載重行經鋪面後所求得之永久應變值，以冪次方永久變形模式計算出N 次重覆載重後的永久變形量，並將之與實際量測的車轍深度做比對。由預測結果顯示，以應變硬化律分析所得的車轍預測值明顯較採用時間硬化律分析時之效果佳，約可減少9.3％之誤差。最後，從兩種不同潛變理論的角度來探討時間硬化律與應變硬化律應用於彈-黏-塑材料模式時，對車轍分析結果所造成之影響。

　　The strain is comprised by four components, elasticity, plasticity, viscoelasticity, and viscoplasticity. Plasticity and viscoplasticity are the reasons for the permanent deformation of asphalt concrete, normally called rutting.

　　The formation of rutting is still uncertain because of the complicated material behaviors of asphalt concrete and the loading conditions. In order to accurately predict rutting, a single-layer elasto-visco-plastic rutting model which is established. The viscoplastic behavior of the material in the model is based on the creep law. The time hardening law and the strain hardening law are both adopted to simulate the viscoplastic characteristics of asphalt. A trapezoid-shaped load amplitude was applied in the FEM analysis. The power law equation of permanent deformation is used to predict rutting after N loading repetitions.

　　The results show that the predicted rutting with strain hardening law are more accurate than those with time hardening law. At last, discuess the influence on the result of the rutting analysis when the two different creep laws, time hardening law and strain hardening law, apply on the elasto-visco-plastic rutting model.

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