建立水泥混凝土鋪面改善維護機制－以蘭潭隧道為例

賴榮俊；林開湖；高清泉；吳明翰

摩擦力管理機制 ； 細紋刨除 ； 開放級配摩擦層

鋪面工程

18卷3期（2020 / 09 / 01）

113 - 142

繁體中文

國道3號蘭潭隧道於新工階段鋪設水泥混凝土鋪面，2001年開放通車後，由於雨季期間雨水容易被車流帶入隧道內，造成隧道口路面潮濕，且原水泥混凝土路面掃紋遭車輛輪胎磨除且沾染油污，造成抗滑度降低，影嚮行車，採用橫向鋸槽、細紋刨除及加鋪開放級配摩擦層（OGFC）等三階段工法整修方式，收集並探討最近10年之鋪面抗滑值、鋪面紋理和平坦度等檢測結果。橫向鋸槽約2年後之BPN值明顯降低，無法有效維持抗滑效果；細紋刨除於初期之BPN值和SN值皆改善，但MTD值之增加則有限，服務4年後，巨觀和微觀逐漸磨損，抗滑力降低；OGFC具有同時改善摩擦力和平坦度之成效，後續仍需持續觀察。本研究可提供後續隧道內水泥混凝土鋪面管理維護參考。

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