臺灣博碩士論文加值系統

本研究主要目的為探討軌道系統受移動載重下之分析模式。藉由縮小模型及消除邊界影響以建立簡化模式模擬複雜之問題。本研究軌道系統之材料性質假設為線性；載重只考慮垂直軸重，包括單一載重及實際輕軌列車載重。研究結果顯示，軌道長度10 公尺之分析模式即足以有效模擬單一載重作用之無碴式軌道系統；進行實際列車載重分析時，須探討各種受力情形，包括軌道系統模擬長度是否能同時容納實際列車軸重，結果顯示，軌道長度16 公尺之分析模式即足以有效模擬實際列車載重作用之無碴式軌道系統。當有碴式軌道系統之載重速度低於每小時390 公里，軌道沉陷量相對誤差最高為9.3%；無碴式軌道系統之載重速度低於每小時72 公里，軌道沉陷量相對誤差最高為2.4%，因此，在本研究設定之條件下，速度對於軌道最大沉陷量影響不大。

The main purpose of this study is to explore the analytical model of the rail system under moving loads. By decreasing the model size and eliminating boundary effects, a simplified model can be established to simulate complex problems. The material properties of the rail system in this study are assumed to be linear; only vertical axle loads are considered, including the single axle load and the actual light rail loads. The results show that the 10-meter analytical model is sufficient to simulate the ballastless rail system under a single axle load. When carrying out the actual train load analysis, it is necessary to simulate the real locations of various axle loads, to accommodate the actual train axle weights. The results show that the 16-meter analytical model is sufficient to simulate the ballastless rail system under the actual light rail axle loads. When the load speed of ballasted rail system is less than 390 kilometers per hour, the maximum relative error of the rail settlement is 9.3%; the load speed of ballastless rail system is less than 72 kilometers per hour, the maximum relative error of the rail settlement is 2.4%. Therefore, under the assumptions in this study, the effect of the velocity on the maximum settlements of the rails system are insignificant.

摘要I
誌謝III
目錄IV
圖索引VIII
表索引XII

壹、緒論 1
1.1研究動機與目的1
1.2文獻回顧2
1.3研究內容4

貳、SASSI程式簡介5
2.1SASSI程式之介紹5
2.1.1SASSI程式之基本假設5
2.1.2柔性體積法(Flexible Volume Method)7
2.1.3阻抗分析(Impedance Analysis)9
2.1.4結構分析(Structural Analysis)10
2.1.5SASSI程式之特色10
2.2移動載重之模擬方式11
2.2.1連鎖效應法(Chain Method)11
2.2.2行進法(Motion Method)12

參、移動載重之參數分析14
3.1引言14
3.2Chain Method之參數分析16
3.3Motion Method之參數分析17
3.4小結20

肆、有碴式軌道系統之分析21
4.1引言21
4.2有碴式軌道系統之建立21
4.2.1有碴式軌道系統之材料性質21
4.2.2有碴式軌道系統模擬長度22
4.3分析之最大頻率與計算點數23
4.4移動載重大小與速度26
4.5有碴式軌道之邊界效應問題27
4.5.1邊界效應影響範圍27
4.5.2改變軌枕間距28
4.6小結29

伍、無碴式軌道系統之分析31
5.1引言31
5.2無碴式軌道系統之建立31
5.2.1無碴式軌道系統之材料性質31
5.2.2軌道系統分割段數32
5.3單一移動載重之參數分析33
5.3.1軌道系統模擬長度33
5.3.2分析之最大頻率與頻率計算點34
5.3.3移動載重大小與速度35
5.4實際輕軌列車載重36
5.4.1列車載重之建立36
5.4.2軌道模擬長度37
5.5小結39

陸、結論與建議41
6.1結論41
6.2未來研究建議43

參考文獻44

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