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題名 | 微平面組成模式之數值分析應用研究=The Study and Application of Numerical Analysis Based on the Microplane Constitutive Model |
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作者 | 張光宗; 利寧真; Chang, Kuang-tsung; Li, Ning-chen; |
期刊 | 水土保持學報 |
出版日期 | 20120600 |
卷期 | 44:2 2012.06[民101.06] |
頁次 | 頁121-134 |
分類號 | 441.103 |
語文 | chi |
關鍵詞 | 組成模式; 微平面; 三軸試驗; Constitutive model; Microplane; Plaxis; Triaxial test; |
中文摘要 | 在大地工程的開挖或填土等各項作業中,土體的穩定性及工程上的設計,可藉由土壤組合 律及結合數值分析法(如有限元素或有限差分法),來分析反應。Chang and Sture(2006)以微平面 理論的架構(Bazant et.,2000)為基礎,發展了可模擬土壤受剪變形產生異向性及應力軸轉動的行 為之組成模式。本研究主要依據此組成模式,將原模式中的12 個參數化簡為9 個參數後,結 合有限元素法來進行分析,模擬傳統三軸試驗的土壤應力應變行為。利用PLAXIS 程式內建的 user-defined soil model 功能,將所建構之組成模式導入PLAXIS 以進行有限元素分析,最後以 Sacramento 河砂土(Lee and Seed,1967)之三軸排水試驗資料做驗證,結果顯示,本研究建構了具 備可模擬三軸試驗的土壤組成模式,並成功得結合有限元素數值分析方法。 |
英文摘要 | The excavation or fill operations in geotechnical engineering usually considers soil stability which assisted with the soil constitutive law and numerical analysis software to increase the accuracy of engineering design. Based on the theory of microplane (Bazant et al.,2000), Chang and Sture (2006) had developed a constitutive model about soil deformation by shearing to generate anisotropy and the behavior of rotation of stress axis. According to the constitutive model, our study simplified 12 parameters of the constitutive model into 9 parameters to simulate soil behaviors of stress and strain by traditional triaxial tests with finite element method. Applying user-defined soil model built-inPLAXIS, we constructed the constitutive model to simulate triaxial CD test with Sacramento sand (Lee and Seed,1967). The simulated results were verified with the experiment ones. We successfully constructed the constitutive model for triaxial test modeling in PLAXIS. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。