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| 題 名 | 深開挖災變案例壁體變位分析之研究=Wall Displacement Analysis in the Collapsing Case of Deep Excavation |
|---|---|
| 作 者 | 謝坤宏; 王建智; | 書刊名 | 地工技術 |
| 卷 期 | 124 2010.06[民99.06] |
| 頁 次 | 頁45-54 |
| 分類號 | 441.13 |
| 關鍵詞 | 深開挖; 壁體變位; 強度弱化; FLAC; Deep excavation; Diaphragm wall displacement; Strength weakening; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本文以高雄某深開挖工程為研究案例,該案例由於連續壁瑕疵等問題而發生災變,因此在災害後,如何評估後續施工引致之壁體變位是個重要的課題。本研究將針對該深開挖案例壁體變位監測資料等加以整理,並藉由FLAC程式進行一系列的數值分析,以探討災變發生後壁體變位之影響分析。分析結果顯示,當連續壁體具有瑕疵時,壁體變位有明顯增加情形,以一般方法模擬無法有效評估壁體變位。當以壁體勁度分段折減方式模擬壁體瑕疵影響,並考量災變後土層擾動後強度弱化特性進行分析時,可以合理評估災變發生後的壁體變位。然而此分析模式是否可適用在其他案例,還有待進一步之研究與驗證。 |
| 英文摘要 | Diaphragm wall defect and collapsed during construction has never been examined at a field site in Kaohsiung city. Numerous attempts have been made to demonstrate the wall displacement due to the construction but few of after damage of construction sites. Thus, this paper is to investigae deep excavation at an occurrence problem of field site in Kaohsiung city, Taiwan. Through organizing the measured wall displacements of diaphragm wall from the practical site during construction, and employed FLAC numerical simulation to validate the site specific data, then to analyze the effect of wall displacement after damage. As the results showed that the diaphragm displacement has increased significantly when the defective diaphragm wall occurred, and such displacement cannot be simulated by other approaches. Thus, considering the simulation of the wall defect by reducing the stiffness of diaphragm wall and the soil characteristic of strength weakening after damages, can be more reasonable in wall displacement calculation. However, more studies and case verifications are needed to draw definitive conclusions. |
本系統中英文摘要資訊取自各篇刊載內容。