https://ir.lib.ncu.edu.tw/handle/987654321/24976 本系自民國60年復系，繼承大陸南京中央大學校風一誠樸雄偉，84年6月土木系大型力學實驗館正式啟用後，相對的可以提供更大尺寸及高精度之實驗設備，以供教學研究的需求。 Search the Channel s https://ir.lib.ncu.edu.tw/simple-search https://ir.lib.ncu.edu.tw/handle/987654321/100620 title: Uncertainty analysis of lithological classification in Taipei basin abstract: 摘要： 在工程應用領域和環境科學分析等研究中，對於研究區域的地質組成架構有基本的掌握，對於地質岩性基本的分佈情形有所了解，能夠對分析地質、水文、地下水或是洪旱災等，環境相關研究進行時有所幫助，使分析有所依據和參考。但由於許多實際觀測上的限制，例如先天的環境困境或是後天採樣的屏障，使得實際能夠使用的採樣和觀測資料有限，因此許多研究進行時僅能使用有限的資料進行分析。在此情況之下為有效提高地質空間的解析度，並了解未知空間點的岩性分佈，傳統上也有許多空間統計方法應用于此，而本研究應用的貝氏最大熵法(BayesianMaximum Entropy, BME method)同時考慮時空間之相關性，並且同時處理確定和不確定性資料。以貝氏條件機率概念為基礎，其理論建立于完整的數理哲學概念之上，本研究嘗試應用迭代演算法進行模式收斂，並于收斂過程中考慮模式限制式條件所含之不確定性範圍。而針對台北盆地地質岩性分類之推估，即是屬於離散分佈的類別型資料，因此本研究整體應用方法稱為類別型貝氏最大熵法(Categorical BME)，望能透過有限的地質鑽探之岩心資料，建立完整的三維類別型貝氏最大熵法岩性推估模式，推估台北盆地之三維岩性分布情形，期望可以供台北盆地地質相關研究和實務建設之參考。 出版者： 社團法人台灣農業工程學會 出版日期： 2016-12-01 出處： 農業工程學報, 2016-12, Vol.62 (4), p.21-37 資源來源： 華藝CEPS中文電子期刊服務 識別號： ISSN: 0257-5744 識別號： DOI: 10.29974/JTAE.201612_62(4).0002 <br> Tue, 21 Apr 2026 06:08:53 GMT https://ir.lib.ncu.edu.tw/handle/987654321/100616 title: Numerical analysis of free surface flow over a submerged rectangular bridge deck abstract: 摘要： AbstractThis study integrates a large eddy simulation model to investigate the effect of a submerged rectangular cylinder on the hydrodynamics of free surface flows. The simulation results are validated by the results of flume experiments. Then the numerical model is utilized to examine the influences of Reynolds number, Froude number, and blockage ratio on the flow field and the force coefficients of the deck. The simulation results reveal that the drag coefficient is dependent on the deck’s Froude number and blockage ratio of the bridge deck, rather than the Reynolds number. For both subcritical and transcritical flows, the drag coefficient increases as the blockage ratio increases. However, due to the wave-induced drag, the drag coefficient of the cylinder in transcritical flows is greater than that in subcritical flows with the same blockage ratio. On the other hand, the lift coefficient is a function of the submergence ratio and the deck’s Froude number. The separation shear flow on the upper side of the cylinder is constrained by the water surface when the submergence ratio h*<2.0, and resulting in an asymmetric pressure distribution on the upper and lower sides of the deck, which subsequently generates a downward force on the bridge deck. 出版者： American Society of Civil Engineers 出版日期： 2016-12-01 出處： Journal of Hydraulic Engineering, 2016-12, Vol.142 (12) 版權： 2016 American Society of Civil Engineers 識別號： ISSN: 0733-9429 識別號： EISSN: 1943-7900 識別號： DOI: 10.1061/(ASCE)HY.1943-7900.0001177 <br> Tue, 21 Apr 2026 06:08:49 GMT https://ir.lib.ncu.edu.tw/handle/987654321/100612 title: Numerical analysis of free surface flow over a submerged rectangular bridge deck abstract: 摘要： AbstractThis study integrates a large eddy simulation model to investigate the effect of a submerged rectangular cylinder on the hydrodynamics of free surface flows. The simulation results are validated by the results of flume experiments. Then the numerical model is utilized to examine the influences of Reynolds number, Froude number, and blockage ratio on the flow field and the force coefficients of the deck. The simulation results reveal that the drag coefficient is dependent on the deck’s Froude number and blockage ratio of the bridge deck, rather than the Reynolds number. For both subcritical and transcritical flows, the drag coefficient increases as the blockage ratio increases. However, due to the wave-induced drag, the drag coefficient of the cylinder in transcritical flows is greater than that in subcritical flows with the same blockage ratio. On the other hand, the lift coefficient is a function of the submergence ratio and the deck’s Froude number. The separation shear flow on the upper side of the cylinder is constrained by the water surface when the submergence ratio h*<2.0, and resulting in an asymmetric pressure distribution on the upper and lower sides of the deck, which subsequently generates a downward force on the bridge deck. 出版者： American Society of Civil Engineers 出版日期： 2016-12-01 出處： Journal of Hydraulic Engineering, 2016-12, Vol.142 (12) 版權： 2016 American Society of Civil Engineers 識別號： ISSN: 0733-9429 識別號： EISSN: 1943-7900 識別號： DOI: 10.1061/(ASCE)HY.1943-7900.0001177 <br> Tue, 21 Apr 2026 06:08:43 GMT https://ir.lib.ncu.edu.tw/handle/987654321/100609 title: Heliu debris flow induced by typhoon soudelor: Failure mechanism and numerical simulation abstract: 摘要： 桃園市復興區羅浮里合流部落集水區，於2015 年8 月8 日蘇迪勒颱風期間因強降雨誘發邊坡岩屑崩滑形成土石流，造成下游 15 戶民宅遭到破壞或淤埋。本研究以遙測影像、UAV 攝影測量、致災雨量分析、微地形判釋、崩塌地倒樹線型、現地勘查及數值模擬探討土石流致災機制與災害成因。合流集水區上游為一舊岩體滑動區，且存在古土石流堆積扇地貌，本案例災害主要受降雨形成之地表逕流沖刷，導致坡腳失穩之後退式岩屑崩滑。本文採RAMMS 數值模擬以參數逆推法探尋土石流發生之可能情境，並與災後地貌進行驗證。災害動態影片分析與數值模擬驗證則顯示合流部落土石流之流動段流速約14.3 m/s，受災堆積段之溢淹深度則介於1-5 m。 出版者： 中華水土保持學會 出版日期： 2016-12-01 出處： 中華水土保持學報, 2016-12, Vol.47 (4), p.171-184 資源來源： 華藝電子期刊(CEPS) 識別號： ISSN: 0255-6073 識別號： DOI: 10.29417/JCSWC.201612_47(4).0001 <br> Tue, 21 Apr 2026 06:08:38 GMT