溫度效應下高速公路柔性鋪面車轍損傷模擬

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姓名

郭廷宇(Ting-yu Guo) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

溫度效應下高速公路柔性鋪面車轍損傷模擬
(Rutting analysis of highway flexible pavement in temperature effect)

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摘要(中)

台灣位處與亞熱帶，高溫多雨的氣候特性，易對鋪面材料強度與勁度造成損傷，進而影響鋪面之服務品質與年限，並且因重車載重能力之提供，也給予鋪面更大的損傷。
本研究採用典型國道斷面，搭配有限元素計算工具ABAQUS，並根據AASHTO 2008 暫行版「力學-經驗鋪面設計準則」進行相關車轍之模擬評估。並於模擬中導入實際溫度與實際交通量之因素，以期更能符合實際國道之車轍破壞情形。
由分析結果顯示，高溫季與高溫時段造成車轍量占全年度車轍量之53％與68％，顯示瀝青材料在高溫時之強度與勁度下降之情形，由此可知高溫亦是造成鋪面損害重要因素之一。
導入實際交通量之計算結果顯示，軸重較重之T4車型與交通量較高之T2車型為造成鋪面車轍損害之主要車型。

摘要(英)

Situated geographically in the tropical zone, Taiwan is characterized by its humid subtropical climate which not only causes damage to the strength and stiffness of the pavement material, but also influences its service quality and service year; what’s more, the upgrading of heavy duty vehicles causes further damage to the pavement.
In this study, the rutting analysis will be proceeded based on the highway cross section with finite element analysis program “ABAQUS” and the AASHTO 2008 “Mechanics-Empirical Pavement Design Guide.”Also, the real temperature and real traffic factors are involved in the analysis, in hopes that the result conforms to the real highway rutting damage.
According to the results of analysis, the rutting which take the high temperature season and the high temperature time are of 53％ and 68％ respectively out of an entire year. Such results show that the strength and stiffness of asphalt material reduce when the temperature increases. Therefore, the high temperature is one of the important factors of rutting damage.
Judging by the results of analysis, the T4 vehicle type with heavy axle load and the T2 vehicle type with high traffic are mains vehicles types which cause the rutting damage to the pavement.

關鍵字(中)

★ 車轍
★ 力學-經驗準則

關鍵字(英)

★ Mechanics-Empirical Pavement Design Guide
★ rutting

論文目次

摘要 I
ABSTRACT II
致謝 III
目錄 VI
第一章緒論 1
1.1 研究背景與動機 1
1.2 研究目的 2
1.3 研究方法與流程 3
第二章文獻回顧 5
2.1 柔性鋪面 5
2.1.1 柔性鋪面種類 5
2.1.2 柔性鋪面破壞原因及型態 6
2.2 鋪面力學分析之背景 11
2.2.1 彈性理論 11
2.2.2 鋪面分析程式KENLAYER之簡介 13
2.2.3 有限元素於柔性鋪面之應用 14
2.2.4 有限元素程式ABAQUS之簡介 15
2.2.5 柔性鋪面幾何模擬 15
2.2.6 邊界條件 16
2.2.7 重車之車輪荷載 16
2.2.8 鋪面材料在ABAQUS上永久變位行為之應用 18
2.3 柔性鋪面破壞模式 19
2.3.1 車轍破壞模式 20
2.3.2 疲勞破壞模式 22
2.4 AASHTO柔性鋪面設計方法 25
2.4.1 研究發展背景 25
2.4.2 AASHTO 2008 新設計準則理念 27
2.5 AASHTO 2008 柔性鋪面破壞分析之預測模式 28
2.5.1 車轍破壞分析模式 28
2.5.2 動態模數理論 32
2.5.3 瀝青混凝土動態模數主曲線 34
2.5.4 疲勞裂縫分析模式 38
第三章鋪面模型建立與溫度、交通量分布特性 44
3.1 鋪面模型建立 44
3.1.1 鋪面模型材料性質 44
3.1.2 鋪面模型邊界條件 46
3.1.3 鋪面模型車輪載重 47
3.1.4 對移動載重與靜態載重之比較 49
3.2 溫度分布資料 50
3.2.1 季節與時段之分類與代表溫度 50
3.2.2 高速公路鋪面溫度分布 51
3.3 高速公路交通量分布特性 54
3.3.1 高速公路重車交通量 54
3.3.2 高速公路重車載重 56
3.3.3 高速公路重車胎壓與軸型 59
第四章有限元素法計算分析流程 61
4.1 Abaqus CAE面模型之建立 61
4.2 Fortran副程式之簡介 67
4.3 各層車轍之計算 68
4.3.1 面層車轍之計算 68
4.3.2 瀝青處理底層車轍計算 69
4.3.3 基層車轍計算 70
4.3.4 路基土壤之車轍計算 71
4.4 鋪面結構之永久變位 71
第五章鋪面車轍之計算分析結果 73
5.1 全年度各車型車轍之分析比較 73
5.2 各溫季與時段車轍分析 80
5.3 鋪面車轍總量計算與探討 84
第六章結論與建議 87
6.1 結論： 87
6.2 建議 88
參考文獻 i

參考文獻

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指導教授

張瑞宏(Jui-Hung Chang)

審核日期

2011-7-25

推文