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碩士論文公告區 |
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| 年度： | 95 | |
| 姓名： | 趙世傑(Shih-Chieh Chao) | |
| 論文題目(中)： | 土石壩之動態數值模擬 | |
| 論文題目(英)： | Numerical simulation on the dynamic behavior of earth dam using FLAC | |
| 摘要(中)： | ||
| Pastor與Zienkiewicz於1986年提出「廣義塑性模式」，並應用於大地工程問題中，本研究以廣義塑性模式為主軸，配合以有限差分為基礎之數值分析軟體FLAC5.0程式來進行本研究之分析，而此模式並沒有內建於FLAC程式中供使用者選用，因此需利用Fish語言將此模式編寫成FLAC可執行之副程式，副程式完成以後便進行三軸試驗模擬之驗證工作，模擬對象以Castro(1969) 對於砂土液化行為之研究成果為對照案例，其後便將此模式應用於土石壩之模擬分析，本研究分析之案例有三，分別為聖法南度水壩(San Fernando dam)、鯉魚潭水庫 (Li-Yu-Tan reservoir)及寶山第二水庫（The second reservoir of Pao-Shan）。聖法南度水壩主要為測試此模式分析液化之能力，研究結果顯示此模式的確能模擬出土體受外力影響後孔隙水壓與有效應力間之關係，在鯉魚潭水庫部分，從分層滾壓階段至動態反應分析，與前人研究相比較，其行為反應差異不大，其結果也更進一步驗證此模式用於大地工程問題之可行性；第三個案例寶山第二水庫分析之結果與現場監測值進行比對相當吻合，由於寶山第二水庫並未遭遇強震之侵害，故動態部分為預測之模擬分析，以921集集地震為模擬對象，分析結果發現壩體除下游殼層之表層會發生破壞以外，壩頂之沈陷量與壩體整體皆屬於安全範圍。 | ||
| 摘要(英)： | ||
| In 1986 Pastor and Zienkiewicz brought up the “Generalized Plasticity Model” and also applied it into the geotechnical engineering issue. This research used the generalized plasticity model as soil constitutive law program of FLAC5.0, a kind of numerical analysis software and based on the finite difference method to perform the analysis. Because this model has not been built in the program of FLAC, So it is necessary to use the Fish language to compile this model into a subprogram that can be implemented by FLAC. After completing the subprogram, this research then verified its rationality by simulating the triaxial tests for comparison reason. We compared the numerical result of this study and the result of Castro’s (1969) experience study on sandy soil, the result is very close to that of Castro with the identical condition. Then, we used the user-written constitutive model to study earth-rockfill dam simulation analysis. There are three case studies, including San Fernado Dam, Li-Yu-Tan Reservoir and The Second Reservoir of Pao-Shan in this research. For the San Fernando Dam, this research test the analysis ability on liquefaction by using this model. From this result shows that this model is able to simulate the behavior of pore pressure and effective stress induced by earthquake. For the Li-Yu-Tan Reservoir, the numerical result of this study will be compared with those of former researches in the construction stage and the dynamic stage. It shows that little differences between the result of this study and that of other research. It is further verified that this model is feasible in for the geotechnical engineering. For the analysis result of the Second Reservoir of Pao-Shan, the numerical results are close to the monitoring value. Because the Second Reservoir of Pao-Shan has not been destroyed by any strong earthquake, the dynamic part is a predicted simulation analysis in this study. From the result shows that the dam is subjected to Chi-Chi Earthquake, it is still on safety state except for the surface of the downstream shell of dam. | ||
| 檔案： | 沒有相關檔案 | |
| 相關連結： | http://ethesys.lib.cyut.edu.tw/ETD-db/ETD-search-c/view_etd?URN=etd-0903107-113346 | |