橋面板瀝青鋪面材料力學行為研究

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题名:	橋面板瀝青鋪面材料力學行為研究
作者:	林冠達;林
贡献者:	土木工程學系
关键词:	鋪面力學;黏彈性材料;IDAP-ENSP動力分析;Pavement Mechanics;Viscoelastic Materials;IDAP-ENSP Dynamic Analysis
日期:	2024-08-19
上传时间:	2024-10-09 14:52:00 (UTC+8)
出版者:	國立中央大學
摘要:	道路、鋪面、公路作為生活中日常所見之土木工程設施，時常可以發現道路鋪面之破壞，坑漥、裂縫等等。然而在工程上似乎沒有一便捷之理論數據足以提供工程師對於此類材料之破壞行為以及變形直接進行預測，透過實驗也許可以找出此類材料行為之實驗數據並加以利用，然而實驗所需耗時曠日廢時，若有一精確之材料理論足以描述鋪面性質，則可利用數值分析之方式，省下大量時間與精力取得相對可靠之資料進行預測。因此本研究將進行對於鋪面材料之歸屬及理論理解，並將材料特性以數值方式進行描述，更新動力方程中之材料屬性以此新型材料屬性進行分析模擬，比對不同套裝軟體之分析結果驗證模型可靠性。本研究採用IDAP-ENSP(Implicit Dynamic Analysis Procedure based on Equivalent Nodal Secant Properties)動力歷時分析程序進行分析，此分析程序使用割線勁度法進行迭代，使矩陣對角化，因此不須計算反矩陣之特性，相較於傳統有限元素分析程序而言，其計算相對效率。而對比套裝軟體採用ABAQUS 2017進行數據對比，因ABAQUS為成熟發展之套裝軟體，受工程界信賴，因此用ABAQUS進行參考對比具有公信價值。最後對分析結果進行各種材料特性之比對、統整、歸納，將完整之材料模型理論與數據分析之行為互相參考佐證，並提出產生材料模型與分析結果對比之各項優劣，包括相異部分、相符部分以及可能造成因素，最後進行結論與未來研究更新之參考方向。 ;Roads, pavements, and highways are common civil engineering structures seen in daily life. It is often observed that road pavements suffer from damage, such as potholes and cracks. However, in engineering, there seems to be no convenient theoretical data that allows engineers to directly predict the failure behavior and deformation of such materials. Although experiments may reveal the behavioral data of these materials, the experimental process is often time-consuming. If a precise material theory can describe the properties of pavement, numerical analysis can be used to save significant time and effort in obtaining relatively reliable data for prediction. Therefore, this study aims to understand and classify pavement materials theoretically, and describe material characteristics numerically. By updating the material properties in dynamic equations with these new characteristics, we can conduct analysis and simulations, comparing the results with different software packages to verify the reliability of the model. This research uses the IDAP-ENSP (Implicit Dynamic Analysis Procedure based on Equivalent Nodal Secant Properties) dynamic time-history analysis procedure. This procedure uses the secant stiffness method for iteration, diagonalizing the matrix without the need to calculate the inverse matrix, resulting in relatively higher computational efficiency compared to traditional finite element analysis procedures. For comparison, the study uses ABAQUS 2017 software, a well-established and trusted tool in the engineering field, making it a valuable reference for comparison. Finally, the analysis results are compared, summarized, and categorized based on various material properties. The theoretical material model and numerical analysis behaviors are cross-referenced and validated. The advantages and disadvantages of generating the material model and the comparison of analysis results are discussed, including differences, consistencies, and possible influencing factors. Conclusions and recommendations for future research updates are also presented.
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