| 研究生: |
畢吳翊 Bi, Wu-Yi |
|---|---|
| 論文名稱: |
探討可變形基礎地盤上方擋土結構之行為 Behavior of conventional and reinforced soil retaining walls situated on deformable foundation |
| 指導教授: |
黃景川
Huang, Ching-Chuan |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2006 |
| 畢業學年度: | 94 |
| 語文別: | 中文 |
| 論文頁數: | 77 |
| 中文關鍵詞: | 加勁 、沉陷 |
| 外文關鍵詞: | reinforced, settlement |
| 相關次數: | 點閱:151 下載:2 |
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本研究建立一個二維擋土結構模型,以長150mm直徑2mm的鋼針取代顆粒性背填土壤,並以懸臂式和加勁擋土牆作為擋土結構,藉由階段性的控制地盤沉陷量,模擬擋土牆構築完成之後,牆趾前下方地盤處、牆體下方地盤或是背填土後方地盤產生沉陷時,背填土體的破壞模式以及擋土結構的受力行為。
研究發現,當地盤為軟弱土壤或是發生沉陷問題時,牆趾前下方地盤處地盤沉陷對擋土結構影響最大;相較於其他兩種情形,牆趾前下方地盤處沉陷造成牆體所受側向土壓力最大,且牆體向外傾斜嚴重,增加背填處土壤的沉陷量。
In the study, a two-dimensional model retaining wall system was established. The backfill and foundation of the retaining walls were construced by stacking 2mm diameter, 150mm long steel rods. In this model, we can observe the location of failure surface and behavior of retaining structure on three modes of foundation deformation:fundation settlement in front of the toe of the wall, settlement under the base of the wall, and settlement under the backfill of the wall.
The results show that the influence of settlement in front of the toe of the wall on retaining walls are most apparent. In this mode, it generated the highest increment of the lateral pressure, and more settlement at the crest of the backfill.Therefore, for analysis of earth retaining structure, it must take into the account of the influence of foundation settlement on the whole behavior.
1. Coulomb, C.A. (1776)“Essai sur Application des Regles de Maximis et Minimis
a quelques Problem de Statique,relatifs a 1‘Architecture, ” Mem.Roy.des
Sciences. Paris, Vo1. 3, 38.
2. Das, B.M. (1998)“Principles of Geotechnical Engineering”, ed, PWS
Publishing Company,U.S.A..
3. Duncan, J.M.and Chang, C.Y.(1970)“Nonlinear Analysis of stress and
Strain in Soils, ”Journal of the Soil Mechanices and Foundation Division,
ASCE, Vo1. 112, No.3, pp. 1625-1653.
4. Huang, C.C., Meng, F.Y. and Chou, Y.C. (1999) “The effect of the bending
rigidity of a wall on lateral pressure distribution ”Canada Geotech.J.Vol
36, pp.1039-1055.
5. Jaky, J. (1944)“The Coefficient of Earth Pressure at Rest, ”Journal of
the Society of Hungarian Architect and Engineers, Vo1. 7, 355-358.
6. Rankine. W.M.J.“On Stability on Loose Earth”Philosophic Transactions of
Royal Society, London,part I, 9-27.
7. Rowe, P.W. (1961)“The Stress-Dilatancy Relation for Static Equilibrium
of An Assembly of Particles in Cntact”Proc. Roy. Soc. A, 269, 500-521.
8. Terzaghi, K.(1941)“General Wedge Theory of Earth Pressure, ”ASCE
Transaction, pp. 68-88.
9. 孟繁羽 (1996) “探討壁面勁度與主動土壓力關係之鋼針模型試驗”,國立成功大學土
木工程研究所碩士論文。
10.周育慶 (1997) “鋼針模型擋土牆之主動土壓力試驗與分析”,國立成功大學土木工程
研究所碩士論文。
11.鄭智元(1994)“加勁式擋土牆破壞模式之模型試驗與穩定分析”,國立成功大學土木工
程研究所碩士論文。