博碩士論文 90322007 詳細資訊




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姓名 李旻霖(Lin-Min Li)  查詢紙本館藏   畢業系所 土木工程學系
論文名稱 柔性鋪面承載之非線性分析
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摘要(中) 摘要
本研究主要討論的內容是探討在非均佈荷重作用下材料非線性之影響,說明如下:
本研究採用三維有限元素鋪面結構為分析模式,在探討在非均佈荷重作用下材料非線性之影響,本研究續用前人已將輪胎模型模擬成輪胎與鋪面表面的接觸應力條件下,再針對材料方面模擬為非線性模式,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於雙輪中央處;而鋪面的表面車轍將可能發生在輪胎胎面下方處,並且破壞與重車的高胎壓、高軸重有關。所以更可以模擬出真實鋪面反應。
在路面績效評估方面,結合論文之第五、六節分析原理,應用於AI設計方法之車轍及疲勞龜裂模式理論,針對先前均佈與非均佈荷重情況下進行鋪面之績效分析。
摘要(英) ABSTRACT
This study main disscuss about the influence of tire-pavement non-uniform contact stress with non- linear material.
this study developed a 3-dimensional finite element model in disscussing the effects of tire-pavement non-uniform contact stress with non- linear material.This study ever developed a tire model to model tire-pavement non-uniform contact stress and in material aspect simulate a non-linear mode.The pavement respones results in different tire pressure and single axle two wheel show that the surface crack occurred center of two tires; and the surface rutting occurred under tire side. The distress relate with high tire pressure and axle load. So non-linear material can model the response of surface on pavement.
In the performance-based pavement evaluation part, the study combine the fifth and sixth chapters and sections in analyze theorem.The application for the rutting and tired cracks mode theory of AI design method counter with non-uniform and uniform load to procced pavement effects.
關鍵字(中) ★ 鋪面設計 關鍵字(英)
論文目次 第一章緒論............................................... 1
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............................................ 5
2.1 多層彈性理論.......................................................................................................... 5
2.1.1 Boussinesq 理論................................................................................................ 5
2.1.2 多層系統........................................................................................................... 5
2.1.3 多層彈性理論鋪面設計程式KENLAYER ..................................................... 9
2.2 鋪面破壞準則........................................................................................................ 12
2.2.1 疲勞破壞準則................................................................................................. 12
2.2.2 車轍破壞準則................................................................................................. 13
2.3 有限元素應用於柔性鋪面結構研究分析......................................... 15
2.3.1 鋪面幾何模擬................................................................................................. 15
2.3.2 邊界條件.......................................................................................................... 15
2.3.3 車輪荷重......................................................................................................... 16
2.4 回彈模數設計法................................................................................. 18
2.5 路基土壤之回彈模數組成模式......................................................... 19
2.5.1 回彈模數組成模式([Huang]所建議的).......................................................... 19
2.5.2 回彈模數組成模式([T292-91]所建議的) ...................................................... 20
2.6 材料非線性行為................................................................................. 22
2.7 輪胎與鋪面間接觸應力分佈之相關研究........................................ 23
2.8 Lagrange 內插值函數......................................................................... 26
第三章鋪面模型的建立及驗證............................... 29
3.1 三維有限元素柔性鋪面模型建立..................................................... 29
3.1.1 幾何形狀的模擬.............................................................................................. 29
3.1.2 邊界條件.......................................................................................................... 31
3.1.3 車輪載重.......................................................................................................... 31
3.1.4 材料性質......................................................................................................... 32
3.1.5 有效路基深度的分析...................................................................................... 33
3.2 柔性鋪面模型的驗証........................................................................ 34
3.2.1 均質半無限空間的驗証.................................................................................. 34
3.3.2 三層鋪面系統的驗証..................................................................................... 38
第四章非均佈荷重之研究方法............................... 42
4.1 輪胎模型建立及非均佈載重之產生................................................. 42
4.2 進行驗証非均佈輪荷重..................................................................... 44
4.3 非均佈輪荷重施加於鋪面之方法..................................................... 53
第五章路基土壤非線性研究方法及對鋪面影響的分析與討論...... 57
5.1 回彈模數之定義................................................................................. 57
5.1.1 材料之回彈模數.............................................................................................. 58
5.1.2 路基土壤之材料性質...................................................................................... 59
5.1.3 路基土壤之回彈模數組成模式([T292-91]所建議的) .................................. 59
5.1.4 含水量對回彈模數之影響.............................................................................. 60
5.1.5 本研究之材料非線性模式.............................................................................. 61
5.2 非線性材料研究方法......................................................................... 62
5.3 比較材料線性與非線性對鋪面的影響............................................. 65
5.3.1 以軸向應力觀察鋪面反應.............................................................................. 66
5.3.2 以主剪應力觀察鋪面反應.............................................................................. 67
第六章基層非線性研究方法及對鋪面影響的分析與討論......... 79
6.1 基層之回彈模數................................................................................. 79
6.2 研究方法............................................................................................. 80
6.3 比較線性與非線性材料模型對鋪面之影響..................................... 80
6.3.1 以軸向應力觀察鋪面反應.............................................................................. 81
6.3.2 以主剪應力觀察鋪面反應.............................................................................. 81
6.3.3 材料非線性與線性之差異性.......................................................................... 82
第七章佈與非均佈荷重下對鋪面車轍及疲勞破壞分析影響....... 93
7.1 以路基土壤底端之最小主應變觀察鋪面之車轍破壞..................... 94
7.2 以面層底部之最大主應變觀察鋪面之疲勞破壞............................. 94
第八章結論與建議......................................... 99
8.1 結論..................................................................................................... 99
8.2 建議................................................................................................... 100
參考文獻................................................. 101
參考文獻 參考文獻
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指導教授 張瑞宏(Jui-Hung Chang) 審核日期 2003-7-4
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