| 姓名 | 辜承興(KU CHEN) | 電子郵件信箱 | s9311609@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 | 94學年第2學期 | |
| 論文名稱(中) | 傾斜承拉式地錨於卵礫石層中錨碇行為之研究 | |||
| 論文名稱(英) | Anchorage Behavior of Inclined Tension 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/300 | |||
| 摘要(中) | 為瞭解於卵礫石層中傾斜承拉式地錨之錨碇行為，本研究特別針對台中盆地之卵礫石層，進行27支傾斜承拉式地錨現地拉拔試驗。由試驗結果分析覆土深度、錨碇段長度及灌漿量多寡是否對地錨錨碇力有所影響，在本文都作深入探討，另外為了使本試驗傾斜地錨研究更加嚴謹，在分析的過程中特別針對摩擦應力、覆土深徑比、長徑比在相同或不同地質條件下施作深入比較，最後藉由蒐集相關現地地錨試驗案例與國內、外相關文獻來加以印證出傾斜地錨錨碇力之行為。 由研究結果得知在相同覆土深度約為2.5m時，單位長度之錨碇力在約在167~304 kN/m之間;並且在覆土深度於3.5 m時，其單位長度之錨碇力更高達到304~373 kN/m之間。對於增加傾斜地錨之覆土深度、錨碇段長度皆能有效地增加地錨之錨碇力，其中以增加地錨錨碇段長度效果最佳。本試驗傾斜地錨在錨碇段1~4 m，覆土深度在2~3.5 m變化下，得到摩擦應力都集中於500~800 kN/m2之間。 由研究成果發現，本傾斜地錨試驗使用低壓灌漿方式，在每單位公尺長度下所需要的漿量約為23189 cm3/m，將前人案例使用重力灌漿方式與本試驗地錨結果比較，得知低壓灌漿所耗費漿量較少，錨碇段長度與漿量呈 趨勢般上升。 | |||
| 摘要(英) | The objective of
this research is to understand the anchorage behavior of inclined
anchors in gravel formation in Taichung basin. Total of 27 full-scaled
inclined anchors were installed and pulled out in situ. The impacts
of overburden depth, bonded length, and the amount of grout on the
ultimate capacity of anchors were analyzed using the testing
results. The influences of frictional resistance, ratios of
overburden depth and bonded length versus anchor diameter, and anchors
located in different geological materials were also studied. The in
situ tests of anchors in Taiwan and abroad were synthesized to compare
with the results of this study. As the overburden depth at about 2.5 m, the ultimate pullout capacity per unit length is between 167 and 304 kN/m. For overburden depth at 3.5 m, the ultimate pullout capacity per unit length is from 304 to 373 kN/m. According to the testing results, increases of overburden depth and bonded length can both enhance the ultimate capacity of the inclined anchor in gravel formation. Among these two factors, increase of overburden depth is more effective. The frictional resistance obtained from the research is between 500 and 800 kN/ m2 for bonded length around 1-4 m and overburden depth around 2-3.5 m. The amount of grouting required per unit length is about 23189 cm3/m based on this study using low pressure grouting. However, the amount of grouting is less than the gravity grouting from previous testing. The amount of grouting is all increased with the bonded length. | |||
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