- 學位論文
鐵路隧道補強評估之研究-以南迴線為例
Study on Retrofit of Railway Tunnel-Cases of South Link Railway
摘要
電氣化是鐵路快捷化最具關鍵性因素之ㄧ，臺鐵環島路網全長約888公里，其中未電化路段由屏東至花蓮約294公里（南迴線約98公里），營運中非電化隧道由於地質條件較差受岩土壓力長期作用結構產生滲漏水、裂縫或頂拱混泥土老化等情況，嚴重影響旅運安全，配合未來動力一元化須全線改善電氣化。 有鑑於此，為考量政府財政困難，藉由相關鐵路隧道補強工法之搜集、分析、探討建立鐵路隧道更具安全性和經濟效益並符合電氣化需求之維護補強設計準則、施工規範係為重要議題。 臺鐵南迴線現有隧道新建之際雖有預留未來電氣化淨空，通車後生命週期已近20年，因受地質作用強烈且頻繁外力影響，多數異常隧道臺鐵局僅就營運中行車安全為優先考量辦理維修補強。本研究成果，冀望能提供隧道補強時機及工法之選定，以延長營運中隧道的使用年限、提升結構安全、符合未來鐵路電氣化需求並確保設備功能。
並列摘要
Electrification system is key point of enhanced train speed. The Taiwan railway length around Taiwan is approximately 888 km including the non-electrification section of Pintung- Hualan around 294 km( South loop line-98 km). The geolgic condition of non-electrification line (Pintung- Hualan) is poor for tunnel and leaking, crack , uplift & aging occurred in tunnel structure. These condtions impacted on the safety of train operation. It is required to integrated Taiwan railway with electrification thru whole track loop. As the government financial budget is difficult to allocate enough fund to support upgraded railway system, it is important to find effective and safe way to reinforce railway tunnel reached by collecting data & analysis. Even though the spare space of southern lines tunnel structure for future electrification system, the life cycle of structure is almost 20 years. The tunnel structure was often impacted by geologic plate force. Most of tunnel structure was maintained and reinforced as operation safety. This research is mainly to provide the timing of reinforcing structure and selection reinforcing method, which is to enlarge the life of tunnel structure and enhance the structure safety. This purpose of the paper is to match the requirement of future electrification and well function of core system.