頁籤選單縮合
題名 | 斷層錯動變位對於自來水管隧道的影響=The Impact of Fault Movement on Water Pipe Tunnel |
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作者 | 陳卓然; 周永川; 李順敏; 范川江; 吳世紀; | 書刊名 | 地工技術 |
卷期 | 138 2013.12[民102.12] |
頁次 | 頁17-26 |
專輯 | 岩盤工程與岩盤數值分析 |
分類號 | 445.242 |
關鍵詞 | 管中管; 柔性接頭; 斷層錯動位移; Pipe-in-pipe; Flexible joints; Fault movement; |
語文 | 中文(Chinese) |
中文摘要 | 斷層錯動位移對於傳統自來水管影響很大,為降低斷層錯動位移破壞重要自來水幹管而影響正常供水,自來水公司對於跨過斷層的重要自來水幹管採用管中管設計,即以潛盾隧道及軟弱填充材包裹保護著自來水鑄鐵管(DIP,Ductile Iron Pipe),必要時於自來水鑄鐵管內設置多處柔性接頭,以吸收斷層錯動的大變位。自來水幹管的管中管斷面近似於複合材料其變位行為相當複雜。本文以大度路1200mm輸水管潛盾工程為例,探討自來水管中管斷面受到斷層錯動位移的變位行為。大度路輸水幹管係以近似正交方式跨過山腳斷層,斷層錯動位移對於自來水輸水幹管的影響係屬三維問題,本文採用ANSYS程式數值模擬探討斷層錯動位移對於大度路1200mm輸水管的影響,並藉由數值計算結果,提出如何決定柔性接頭的數目及配置以吸收斷層錯動位移。 |
英文摘要 | Fault movement has a great influence on the displacement of the water pipe. To reduce the impact of fault displacement on the ordinary water supply. A pipe-in-pipe has been designed to absorb the fault displacement when the water pipe crosses a fault. The pipe-in-pipe has been composed of lining of shield tunnel, weak stuff and DIP cast iron pipe. If necessary, multiple flexible joints will be installed in the DIP cast iron pipe to absorb a large deformation caused by fault movement. The cross-section of pipe-in-pipe is similar to a composite material in which the deformation behavior is usually quite complicate. In this paper, a case study on the deformation behavior of pipe-in-pipe subjected to a fault displacement has been explored. The water pipe-in-pipe of ψ1200mm at DaDu road is in nearly orthogonal way across the SanJiao Fault so that fault displacement affecting on the water pipe is a typical three-dimensional problem in the numerical analysis. The well-known FEM software ANSYS is adopted to study the influence of the fault rupture displacement on ψ1200mm water pipe at DaDu road. From the conclusion of calculation, a suggestion of how to determine the number and configuration of the flexible joints installed at DIP(Ductile Iron Pipe) to absorb the fault rupture displacement has been proposed. It is expected that the conclusion described in this paper would be helpful for engineer in gaining the ability of the analysis so that more effective design can be developed for such problem in the future. |
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