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系統識別號 U0026-1306201720592700
論文名稱(中文) 鋼軌波狀磨耗之成因探討─以臺鐵沙崙線為例
論文名稱(英文) Cause investigation of rail corrugation – a case study of TRA Shalun Line
校院名稱 成功大學
系所名稱(中) 土木工程學系
系所名稱(英) Department of Civil Engineering
學年度 105
學期 2
出版年 106
研究生(中文) 吳文豪
研究生(英文) Wen-Hao Wu
學號 N66044381
學位類別 碩士
語文別 中文
論文頁數 90頁
口試委員 指導教授-郭振銘
口試委員-劉光晏
口試委員-黃晟豪
中文關鍵字 波狀磨耗  彈性PC軌枕防振直結式軌道  鋼軌振動  輪軌交互作用 
英文關鍵字 Corrugation  Elastic PC sleeper resilient directly laid track  Rail vibration  Wheel-rail interaction 
學科別分類
中文摘要 在鐵道運輸帶來的方便背後,往往將伴隨著環境振動及噪音的困擾,尤其在彎道段由於特別的輪軌作用關係,將帶來更嚴重的效果,鋼軌不整為這些困擾之成因之一,而鋼軌面規律且週期性不整之波狀磨耗即為其中一項課題。
在臺鐵沙崙線通車後不久即生成波狀磨耗,本研究根據文獻探討後計畫以波狀磨耗量測儀量測波狀磨耗,並搭配軌道構件之振動量測,搭配文獻找出其形成機制,實際探討成因以期未來能對症下藥,改善波狀磨耗所帶來的不便。
根據波狀磨耗量測結果可發現使用5年多之2011年鋪設之硬頭鋼軌低軌有25、50-63、125-160mm之波狀磨耗,2016年更換另一型號硬頭鋼軌後生成約10mm波長不整,搭配車行及衝擊槌激振振動量測與文獻特性對照找出其相關機制。由於本軌道型式之軌枕自振頻率應將導致列車垂向力波動而生成50-63mm之波狀磨耗。而本段鋼軌具有焊接點不整與接頭,將激發出P2共振,也可能有輪對第一扭轉共振現象,然而些許特性與文獻不符合,推測有可能為125-160mm波狀磨耗之成因。
最後發現更換新型號之鋼軌改善效果良好,更換後7個月內仍無波狀磨耗生成,但卻由於獨有自振頻率,可能因此生成10mm波長之不整,未來仍有待觀察。
英文摘要 When the train passes, the interaction of wheel and rail will generate vibration, noise and wear, and the defects or irregularities on wheels or rails will make it worsen. One kind of the irregularity is corrugation. This is the quasi-periodic irregularity on rails’ running surface. The southbound track of TRA Shalun Line faced corrugation after opening. After literature review, we planned to measure the corrugation and vibration of rail excited by trains and hammer in order to determine the cause of corrugation in this case.
We found out the corrugation wavelength in this case are 25mm, 50-63mm and 125-160mm at old low rail, and 10mm wavelength irregularity at new low rail. Computing with the train speed, we would get the corrugation formation mechanism frequency.
Comparing with the corrugation characteristics and rail vibration measurement result of train passing and hammer impact, we found out the cause of corrugation. The form mechanism of 50-63mm wavelength corrugation is specific track form resonance (around 200Hz). When the train passes, it will cause high vertical dynamic load and lead to stick-slip oscillation, forming corrugation.
We found that replaced new type of rails worked well at improving corrugation. After 7 months of running, there was no corrugation growth at new rail. Based on experiment data, some natural frequencies of new and old rails are different, and this characteristic may encourage the growth of corrugation.
論文目次 摘要 I
EXTENDED ABSTRACT II
致謝 VIII
目錄 IX
表目錄 XI
圖目錄 XII
第一章 緒論 1
1.1研究動機與目的 1
1.2研究範圍與限制 2
1.3研究方法與流程 3
第二章 文獻回顧 4
2.1輪軌接觸理論 4
2.2波狀磨耗 7
2.2.1形成機制 7
2.2.2成因與分類 10
2.2.3因應對策 16
2.3鋼軌面不整之相關規範 26
2.3.1 ISO 3095:2005 26
2.3.2 EN 15610:2009 28
2.3.3 EN 13231-3:2012 30
2.4波狀磨耗分析案例 32
第三章 實驗規劃 39
3.1實驗設備 39
3.1.1 波狀磨耗量測 39
3.1.2 振動量測 42
3.2實驗室儀器校正 46
3.3現地量測實驗 48
3.3.1實驗地點 48
3.3.2波狀磨耗量測 49
3.3.3車行振動量測 52
3.3.4敲擊振動量測 54
第四章 實驗數據分析 55
4.1 校正試驗量測成果 55
4.2 現地波狀磨耗量測成果 57
4.2.1 2011年鋪設鋼軌量測結果 58
4.2.2 2016年更換新鋼軌後量測結果 62
4.2.3波狀磨耗量測小結 69
4.3 現地振動量測結果 70
4.3.1車行振動量測結果 70
4.3.2衝擊槌振動量測成果 75
4.3.3振動量測小結 77
4.4 現地波狀磨耗成因探討與分析 78
4.4.1 10mm波長不整與25mm波狀磨耗 80
4.4.2 50-63mm波長波狀磨耗 81
4.4.3 125-160mm波長波狀磨耗 83
4.5 改善方案評估 85
第五章 結論與建議 87
5.1結論 87
5.2建議 88
參考文獻 89
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