| 姓名 | 簡志凱(Chih-Kai Chien) | 電子郵件信箱 | s9311626@mail.cyut.edu.tw | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 95學年第1學期 | |
| 論文名稱(中) | 卵礫石層中垂直承拉式地錨施工方式與拉拔試驗研究 | |||
| 論文名稱(英) | Studies on Construction and Pullout Tests of Vertical Anchors in Gravel Formation | |||
| 檔案 |
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。 |
論文使用權限 | 校內外完全公開 | |
| 論文語文/頁數 | 中文/220 | |||
| 摘要(中) |
本研究於卵礫石層中進行了26支垂直承拉式地錨，並進行現地拉拔試驗，而本試驗地錨中，有10支地錨產生問題，透過本論文所建立之篩選機制，將問題地錨篩選出並探討其造成地錨不良之原因，其原因可能有現地土層已遭受擾動、因為施工不良所導致及總長度太短(>2.0
m)，由於受環境所限制，使本試驗地錨共有3種不同施工方式，結果發現濕式拔套管施工較易使地錨產生錨碇力不足。 本試驗地錨於卵礫石層中深、淺層地錨之臨界覆土深度約在1.5~2.0 m。與前人研究結果分析發現，整體錨碇力以吳俊茂[26]有較高之趨勢，若不考慮土層條件之影響，造成吳俊茂[26]有較高之錨碇力之原因可能為灌漿壓力，所以卵礫石層中使用低壓灌漿能提供較好之錨碇力。卵礫石之整體錨碇力約可達到單位長度錨碇力Lub=0 m承拉式地錨每單位長度錨碇力約為28.4 ton(280 kN)；Lub=1.0 m承拉式地錨每單位長度錨碇力約為45.8 ton(450 kN)；Lub=2.0 m承拉式地錨每單位長度錨碇力約為55 ton(550 kN)。 不同土層中之地錨所得到之荷重-塑性位移之關係也不相同，其中於台北沉泥質砂土中地錨必須產生較大之位移量，才可發揮較高摩擦力；反之，於卵礫石層中之地錨，則只需要產生少位移量，即可發揮至極限摩擦力。透過現地地錨試驗，更進一步了解卵礫石層中地錨錨碇行為，可提供未來工程上實際參考與運用。 |
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| 摘要(英) | The
research is proceeding vertical anchors with 26 anchors in the
Gravel Formation and processing the putout test
experiment. During the experiment, there are 10 anchors have the
prombles, through the percolating system of this essay, it
percolates the problem anchors and than discuss the reason. The
probable reasons can be the site was disturbed, or it was caused
by the bad construction, or the total length was too short
(>2.0m). According to the limitation of environment, the anchors
of the experiment has three different kind of ways to construct,
we found out that the wet drill and putout tube grouting will
easily make the anchor has the situation of load not enough. The depth of the shallow anchor and deep anchor is about 1.5~2.0m. Combining with expert’s analytic result, we found out the research from data [26] that have higher ultimate load, if not consider the formation, the possible reason should be the pressure grouting. So, using pressure grouting with anchor in gravel formation could be better load. Tension anchor of unbounded length=0m the ultimate load about 28.4 ton/m (287 kN/m), tension anchor of unbounded length=1.0m the ultimate load about 45.8 ton/m (450 kN/m), tension anchor of unbounded length=2.0m the ultimate load about 55 ton/m (540 kN/m) in gravel formation. The anchor in different kind of formation, the load-residual displacements will be different. Such as the anchor in the Taipei silty sand must produce more displacements, than it will produce more ultimate friction resistance. On the contrary, the anchors in the Taichung gravels formation just need a little displacement; it will produce highest ultimate friction resistance. From the pullout test, we found out that the anchorage behavior of anchor in gravel formation can provide practical reference and application on engineering in the future. |
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| 口試日期 | 2006-07-26 | 繳交日期 | 2007-01-08 | |