頁籤選單縮合
題 名 | 柔性路面車轍與疲勞龜裂之預測=Prediction on Rutting and Fatigue Cracking of Flexible Pavements |
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作 者 | 劉明樓; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 9:3 1997.09[民86.09] |
頁 次 | 頁417-426 |
分類號 | 442.155 |
關鍵詞 | 車轍; 疲勞龜裂; Rutting; Fatigue cracking; |
語 文 | 中文(Chinese) |
中文摘要 | 柔性路面車轍與疲勞龜裂預測是路面績效分析中非常重要之步驟。本研究將取代傳統經驗 公式方法,採用合理力學理論分析路面在交通荷重下之破壞行為。首先將驗證所使用之材料構造組 成律能模擬瀝青混凝土在不同應力路徑下之力學行為,並將此材料構造組成律與有限元素法結合分 析路面在車輛荷重下之應力與應變,再利用此分析結果與塑性力學及破壞力學理論結合做為路面之 車轍與疲勞龜裂計算。最後則使用所發展之程式預測十二個路面在車輛荷重下之車轍與疲勞龜裂並 與觀測值做比較。程式模擬分析結果顯示所採用之模式能合理的預測破壞路面行為。 |
英文摘要 | Rutting and fatigue cracking are important distresses in the pavement performance, and they are usually difficult to predict accurately under traffic loading. Previous distress models were based on the empirical approach or the phenomenon behavior of the asphalt concrete, which can only be applied to a certain range of materials, traffic loads, and environmental conditions. In this study, the constitutive model representing the behavior of asphalt concrete under different stress path conditions is used to estimate the state of stress of pavement, and then the stresses are used in the rutting and fatigue cracking models to evaluate the pavement distress. The rutting and fatigue cracking models are incorporated with theory of plasticity and fracture mechanics. The capability of these two models is examined by predicting the rut depth and fatigue cracking of twelve pavement sections. Results show that the models can. reasonably predict the distress of pavements. |
本系統中英文摘要資訊取自各篇刊載內容。