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題名 | 連續壁槽溝在穩定液急遽流失下之破壞行為=Failure of Diaphragm Wall Trench Due to Rapid Withdraw of Stability Fluid Level |
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作者 | 張家齊; 徐聰榮; 蔡錦松; Chang, Jia-chyi; Shyu, T. R.; Tsai, J. S.; |
期刊 | 高苑學報 |
出版日期 | 19960800 |
卷期 | 5:2 1996.08[民85.08] |
頁次 | 頁199-208 |
分類號 | 441.13 |
語文 | chi |
關鍵詞 | 連續壁; 穩定液急遽流失; 現場試驗; Diaphragm wall; Rapid withdraw of stability fluid; Full-scale test; |
中文摘要 | 通常連續壁施工係採用穩定液工法來進行槽溝挖掘。壁面穩定端賴穩定液壓來支撐土壓以及地下水壓。因此,穩定液的急遽流失,將成為施工時最危急的□□本文有鑑於此,針對穩定液流失所造成的槽溝破壞現象,進行現地試驗,觀察整個破壞過□□現場□□性地質挖掘長11公尺,寬90公分,深15公尺之試坑,並將原有穩定液抽出模擬流失情況。試驗結果顯示,穩定液抽降至地表下3公尺時,將使槽溝隨時間而逐漸造成全面性崩毀。依據三維土企□理論計算,可以看出穩定液液壓實乃影響槽溝壁面穩定之最重要的參數。結論指出,壁面崩毀所造成之破壞現象與三維土□理論所描述者相近。建議在實驗室再進行適當試驗,以較佳之控制條件來進一步觀察破壞過程。 |
英文摘要 | Sluny method is commonly used for trenching in diaphragm wall construction. The stability of trench wall surface is depend on sluny pressure that is used to resist soil with ground water pressure. It would be a dangerous condition in trenching with rapidly withdraw of stability fluid. For observing the failure mode of diaphragm wall trench, this paper presents a full-scale test to simulate the condition of rapidly withdraw of stability fluid. The trench slot is of 11 m long, 90 cm wide, and 15 m deep in sandy stratum. The rapid loss of stability fluid is made by pumping out the sluny ins the trench. The result shows that the sluny trench failed gradually and collapse finally, when sluny level is down to 3 m below the ground surface. From the three dimensional wedge theory, it is found that the slurry pressure is the most important parameter in influencing the stability of the trench. It is recommended that the further studies can be done on the laboratory experiments to detailly observe the failure process. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。