台灣由於位在歐亞板塊和菲律賓海板塊的交界處，容易因為板塊擠壓造成大規模的地震，在921集集大地震之後，台灣對於結構建築的設計上要求更為嚴格，在結構物受震之後的影響，必須在設計時考慮得更全面，像是土壤結構互制的反應值得重視和注意，如果設計不良會使得結構受損甚至傾倒，若結構體是槽體等容器，會因內部液體的晃動造成槽體震盪放大，更容易破壞造成嚴重的後果。
本文使用有限元素法分析軟體ABAQUS/Explicit來進行時間域的顯性動力分析，除了進行流固耦合CEL分析外，同時考量土壤結構互制來如實呈現桶槽受震的狀態。首先確認ABAQUS分析的結果可不可信，藉由桶槽內受力時所引致的側向位移和槽桶內受均部載重時的環向應力兩個試驗，來比較不同網格密度下之求解收斂性以驗證模型設定是否允當；模型建立完成後，採用擬靜態分析法模擬整體結構在自重下之平衡狀態，接著執行動力歷時分析模擬在地震作用下桶槽結構體之受力行為，並藉由多種條件來區分不同CASE，除了檢視有無樁體時受震的差異外，也會檢視有流體的情況下槽桶受流固耦合的反應。

Since Taiwan is located at the intersection of the Eurasian plate and the Philippine Sea plate, large-scale earthquakes are prone to occur due to plate pressure. After the Chichi earthquake in 921, Taiwan imposed stricter requirements on the design of structural buildings., the impact of the structure after the earthquake must be considered more comprehensively in the design. For example, the interaction of soil structure deserves attention. If the design is not good, it will damage or even tilt the structure. If the structure is a water tank waiting for the container, the main body of the water tank will vibrate and expand due to the sloshing of the internal liquid, which is likely to be damaged and cause serious consequences .
This paper uses the finite element method analysis software ABAQUS/Explicit to perform explicit dynamic analysis in the time domain. In addition to the fluid-solid coupling CEL analysis, the soil structure interaction is also considered to faithfully present the barrel-shaped and trough-shaped seismic state. First, confirm that the results of the ABAQUS analysis are not credible, and conduct two experiments on the lateral displacement caused by the cylinder force and the cylinder circumferential stress under uniform load through two experiments, and compare the solution density under different grids. Convergence is used to verify whether the model settings are appropriate; after the model is established, the quasi-static analysis method is used to simulate the equilibrium state of the overall structure under its own weight, and then dynamic time series analysis is performed to simulate the force behavior of the barrel-tank structure under the action.In addition to checking the difference between the pile and the earthquake, it also checks the response of the tank and barrel under fluid-solid coupling in the presence of liquid.

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