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研究生:張永生
研究生(外文):Yung-Sheng Chang
論文名稱:柔性鋪面之績效評估與非均佈荷重效應
論文名稱(外文):The performance-based pavement evaluation and effect of non-uniform contact stresses on flexible pavement
指導教授:張瑞宏張瑞宏引用關係
指導教授(外文):Jui-Hung Chang
學位類別:碩士
校院名稱:國立中央大學
系所名稱:土木工程研究所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:101
中文關鍵詞:接觸應力車轍開裂瀝青混凝土
外文關鍵詞:contact stressruttingcrackingasphalt concrete
相關次數:
  • 被引用被引用:9
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摘要
本研究所討論的內容分成二大部份,一是鋪面績效評估,另一是探討非均佈荷重所造成之影響,分別說明如下:
在路面績效評估方面,本研究以三維有限元素鋪面結構分析模式,根據中山高速公路軸重調查,分析中山高速公路斷面在交通載重下的鋪面結構反應,並且以應變狀態做為路面績效評估時破壞準則的依據。分析結果與AASHTO設計準則建議值比較下顯示,損害普遍較AASHTO以服務指數經驗方法估算之損害程度為高,依AASHTO設計法設計之路面會低估交通載重對鋪面之損害,而可能發生較設計年限提早破壞的情形。
在探討非均佈荷重之影響方面,本研究所以輪胎模型模擬出輪胎與鋪面表面的接觸應力,分析不同打氣胎壓與單軸雙輪載重作用下對鋪面的反應。分析結果顯示,鋪面的表面開裂將可能發生雙輪中央處;而鋪面的表面車轍將可能發生在接近輪胎邊緣處,並且破壞與重車的高胎壓、高軸重有關。在以均佈荷重作用於柔性鋪面上,並無法模擬出鋪面表面的反應,只有非均佈載重可以模擬出真實鋪面反應。
ABSTRACT
This study consists of two parts. One is performance-based pavement evaluation; the other is the influence of tire-pavement non-uniform contact stresses.
In the part of performance-based pavement evaluation, this study developed a 3-dimensional finite element model in calculating pavement response under traffic loading. The effects of the Sun Yat-Sen Freeway section on pavement damage caused by traffic loading are analyzed. The results show that, by compare is with AASHTO design guide, the AASHTO equivalent axle load factor used to design tends to underestimate the pavement damage.
In the influence of tire-pavement non-uniform contact stresses, this study developed a tire model to model tire-pavement non-uniform contact stresses. The results show that, the surface crack occurred center of two tires; and the surface rutting occurred at the near tire edge. The distress relates with high tire pressure and axle load. The tire-pavement uniform contact stress can’t model the response of surface on pavement, only non-uniform contact stress can.
目錄
中文摘要I
英文摘要II
致謝III
目錄IV
表目錄VII
圖目錄VIII
第一章 緒論I
1.1前言1
1.2研究動機及目的1
1.3研究方法2
1.4論文架構3
第二章 文獻回顧4
2.1 多層彈性理論4
2.1.1 Boussinesq理論4
2.1.2 多層系統4
2.1.3多層彈性理論鋪面設計程式KENLAYER8
2.2 鋪面破壞準則9
2.2.1 疲勞破壞準則10
2.2.2 車轍破壞準則11
2.3中山高速公路軸重調查13
2.4 路面結構強度指數15
2.5 三維有限元素應用於柔性鋪面之相關研究16
2.5.1 鋪面幾何模擬16
2.5.2邊界條件16
2.5.3 車輪荷重17
2.6 輪胎與鋪面間接觸應力分佈之相關研究18
2.7 LAGRANGE內插值函數21
第三章 鋪面模型的建立及驗證23
3.1三維有限元素柔性鋪面模型建立23
3.1.1幾何模擬23
3.1.2邊界條件25
3.1.3車輪載重25
3.1.4 材料性質27
3.1.5有效路基深度的分析27
3.2 柔性鋪面模型的驗証28
3.2.1均質半空間驗証28
3.3.2 三層鋪面系統的驗証30
第四章 非均佈荷重模型的建立及驗證33
4.1 三維有限元素輪胎模型建立33
4.2 非均佈輪荷重的驗証35
第五章 鋪面績效評估的分析結果與討論44
5.1破壞準則分析與AASHTO設計準則之比較44
5.1.1 AASHTO設計準則44
5.1.2 破壞準則分析45
5.1.3單軸載重的分析結果45
5.1.4雙軸載重的分析結果51
5.2各車種對鋪面績效影響51
5.3 載重車輛胎壓對鋪面績效的影響54
5.4 路基土壤對鋪面破壞準則之影響56
5.4.1單軸載重的分析結果57
5.4.2雙軸載重的分析結果61
5.4.3考慮中山高速公路軸重分佈調查61
5.4.4 對ESAL之影響64
第六章 非均佈輪荷重對鋪面影響的分析結果與討論65
6.1 非均佈荷重施加於鋪面之方法65
6.2 比較均佈載重與非均佈載重對鋪面的影響69
6.2.1 以軸向應力觀察鋪面反應70
6.2.2 以主剪應力觀察鋪面反應71
第七章 結論與建議83
7.1結論83
7.2建議84
參考文獻86
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