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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/1316


    Title: 以力學-經驗準則探討溫度與重車載重對高速公路柔性鋪面之影響;Use Mechanistic-Empirical Guide to confer the impacts of temperature and heavy vehicles factor to flexible pavement
    Authors: 廖小媛;Hsiao-yuan Liao
    Contributors: 土木工程研究所
    Keywords: 力學-經驗準則;鋪面溫度梯度;軸重頻譜;Mechanics-Empirical Pavement Design Guide;paveme
    Date: 2009-07-09
    Issue Date: 2009-09-18 17:26:53 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 台灣地處亞熱帶,高溫多雨的氣候,造成鋪面材料強度衰減,進而加速鋪面破壞,影響服務效能,除了環境因素外,隨著載重車輛性能之提升,行駛於高速公路之重車載重有逐年增高之趨勢,並成為造成路面損壞的重要原因之ㄧ。 本研究以典型國道柔性鋪面為對象,依據所收集之鋪面溫度梯度與重車軸重頻譜進行分析。以AASHTO 2008所出的暫行版「力學-經驗鋪面設計準則」所建構的鋪面破壞預測模式進行鋪面破壞程度的評估。針對國內柔性鋪面最典型的車轍破壞與疲勞裂縫這兩種破壞作進一步探討,將台灣特殊的氣候環境、柔性鋪面材料特性、鋪面結構設計、複雜的重車型式與軸重套用於力學-經驗準則,預測台灣高速公路柔性鋪面之破壞趨勢。 分析結果顯示高溫季-高溫時段時對鋪面造成的車轍量佔總車轍量百分比近32%,其交通量約僅佔全年之六分之ㄧ,但對鋪面所造成之車轍量已接近全部車轍量的三分之ㄧ,由此可看出高溫氣候對鋪面所造成之傷害相當大。 Bottom-up鱷魚狀裂縫分析中,在十年交通量行駛下,路面僅破壞3%以內,由於此模式是由瀝青層底部往上開裂至表面之裂縫破壞,而台灣國道鋪面有鋪設很厚的BTB層,故在Bottom-up模式分析下,台灣國道之鱷魚狀裂縫發生率很少。Top-down縱向裂縫分析中,十年分析年限所得之結果大約1200 (ft/mile),因Top-down模式是由瀝青混凝土頂部往下開裂至瀝青混凝土層內部之裂縫破壞,而台灣高速公路鋪面,重車之交通量甚大,高胎壓直接作用於鋪面表面,故輪跡處Top-dowm之縱向裂縫稍為嚴重。 Taiwan’s subtropical climate, high temperature & rainy weather causes th attenuation of pavement material strength and speed up the pavement damage, therefore impacting the service performance of the pavement. In addition to environmental factors, with the upgrading of heavy duty vehicles, there is a trend of increasing vehicle weight and traffich load, both an important causes of road damage. In this study, pavement analysis is done on typical flexible pavements in Taiwan’s highway and data collection on pavement temperature gradient and axle load spectra is used. AASHTO 2008 "Mechanics -Empirical Pavement Design Guide " pavement damage prediction models are used to assess the extent of pavement damage. The results of the analysis showed that in high temperature season- high-temperature periods, the damage caused by rutting failure is nearly 32%. Traffic volume accounts for only about one-sixth of the damage while all rutting failure accounts for nearly one-third of the damages; this indicated the considerable damage caused by high temperatureclimates on pavement. Bottom-up analysis for ten years traffic volume, indicates the propagation alligator cracking is only 3% less of total lane area. Top-down analysis for ten years traffic volume also indicates that the propagation of longitudinal cracking is approximately 1200 (ft/mile).
    Appears in Collections:[土木工程研究所] 博碩士論文

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