這幾年來台灣的邊坡被積極地開發，不論是建物或是道路…等工程，由此可知邊坡受到坡腳開挖處處可見，故應重視鄰近開挖對於建物基礎穩定性之影響，而這也在我們生活中是顯而易見的，且與我們的生活息息相關。近來利用地工合成物來達到邊坡土壤加勁成為了現今大地工程的主要趨勢，而目前土壤加勁的模型研究，主要可以分成室外大型試驗及室內模型試驗。本研究採用二向度(Two-dimensional)坡腳30°鋼針邊坡模型來探討邊坡上之基礎在受坡腳開挖之情形，並且鋼針模型試驗可降低尺寸效應及良好的平面應變行為來消除邊界的摩擦效應。
由試驗結果可知牆與基礎之距離為影響整體基礎穩定性最主要之因素，本研究模擬三種條件:一、當破壞面未到達基礎下方時，未加勁邊坡之沉陷量雖然不明顯，但可看出基礎在加勁邊坡比未加勁邊坡有更好抗沉陷之能力，故穩定性來得較佳。二、當破壞面位於基礎正下方時，對整體基礎穩定性之影響，在加勁邊坡可以明顯看到其提升基礎穩定性相當優秀，未加勁邊坡在模擬開挖過程中，發生了大規模的崩塌行為，屬於瞬間性的破壞，這是在工程設計上最需要警惕的。三、當破壞面跨越整個基礎正下方時，即為到達基礎左側之水平背填區之狀況下，加勁邊坡在初期與未加勁邊坡都無法承受住整體邊坡的滑動，以至於基礎穩定性不佳，直至沉陷量達到一定的程度，如:本研究兩種加勁材分別在沉陷量達0.4倍及0.6倍基礎寬度才發揮抗沉陷之能力，故在這種情況下，應考慮在整個背填區域甚至到達坡腳，進行更全面的加勁作業。

Some two-dimensional (2-D) model tests are performed to investigate the stability of a rigid footing at the crest of a slope subjected to an unloading at the toe of the slope. The effectiveness of using “reinforced earth slab” technique to reduce the settlement of footing is also investigated. The following three series of tests are performed:
1.Unreinforced slopes subjected to loading at the crest or subjected to unloading at the slop toe. This series of tests is to explore the fundamental behavior of unreinforced slopes.
2.Reinforced slopes subjected to slope-toe unloading at various distance to the footing. This series of tests is to investigate the failure mechanism of reinforced slopes subjected to slope toe unloading and is also to investigate the effectiveness of reinforcing technique as a function of height of excavation (or the distance between the cutting and the footing)
3.Slope reinforced with extensible and inextensible reinforcement materials. This series of tests is to investigate the influence of reinforcement extensibility to the effectiveness of reducing footing settlement.

1. 林煒傑(2008)，「以模型試驗探討加勁邊坡之耐震行為」，國立成功大學土木研究所碩士論文。
2. 陳昱宏(2001)，「位於斜坡上檔土牆之地震中破壞調查與變形分析」，國立成功大學土木研究所碩士論文。
3. 郭明瑋(2003)，「邊坡上基礎承載力之數值分析」，國立中央大學土木研究所碩士論文。
4. 許振崑(2005)，「傾斜兩層地盤剪力破壞承載行為之數值模擬」，國立雲林科技大學營建工程研究所，碩士論文。
5. 康文瑋(2007)，「邊坡之基礎承載力分析」，國立成功大學土木研究所碩士論文。
6. 陳玉祥(2011)，「加勁擋土牆在基腳掏空模式下穩定之研究」，國立成功大學土木研究所碩士論文。
7. 黃景川(1999)，「土壤力學」，三民書局。
8. 鄭景綸(2007)，「地工合成物加勁邊坡之承載力分析」，國立成功大學土木研究所碩士論文。
9. 羅偉銘(2007)，「考量基礎地盤變形下檔土牆行為之模型試驗」，國立成功大學土木研究所碩士論文。
10. Graham, J., Andrews, M. and Shields, D. H. (1988) “Stress characteristics for shallow footings in cohesionless slopes” Canadian Geotechnical Journal, Vol. 25, No. 2, pp.238-249.
11. Georgiadis, K. (2010). “Undrained Bearing Capacity of Strip Footings on Slopes” Journal of Geotechnical Engineering, 136(5), pp.677-685.
12. Hansen, J. B. (1970) “A revised and extended formula for bearing capacity” Danish Geotechnical Institute, Copenhagen, Bul. No. 28, pp.5-11.
13. Huang, C.-C., Tatsuoka, F. (1994), “Stability analysis for footings on reinforced sand slopes” ,Soils and Foundations, Vol. 34, no. 3, pp. 21- 37.
14. Huang, C.-C., Tatsuoka, F., Sato, Y.(1994), “Failure mechanisms of reinforced sand slopes loaded with a footing” ,Soils and Foundations, Vol. 34, no. 2, pp. 27- 40.
15. Huang, C.-C., Menq, F. Y., and Chou, Y. C. (1999) “The effect of the bending rigidity of a wall on lateral pressure distribution” Canadian Geotechnical Journal, Vol. 36, pp. 1039-1055.
16. Huang, C.-C. ,Kang, W.-W.(2008), “The effect of a setback on the bearing capacity of a surface footing near a slope” ,Journal of Geo Engineering, Vol. 3, no. 1, pp. 31- 39.
17. Huang, C.-C.(2009), “Effects of horizontal and vertical seismic loads on the bearing capacity of a surface footing adjacent to a slope” ,Soils and Foundations, Vol. 49, no. 2, pp. 249- 258.
18. Huang, C.-C., Hsieh H.-Y., Hsieh Y.-L. (2014) “Hyperbolic models for a 2-D backfill and reinforcement pullout” , Geosynthetics International, Vol.21, Iss.3, pp.168 -178.
19. Kuskkabe, O., KIMURA, T., Yamaguchi, H. (1981)“Bearing Capacity of Slope Under Strip Loads on The Top Surfaces”, Soil and Foundation, Japanese Society of Soil Mechanics and Foundation Engineering, Vol.21.
20. Meyerhof, G. G. (1957) “The ultimate bearing capacity of foundations on slopes.” Proceedings, 4th International Conference on Soil Mechanics and Foundation Engineering, London, Vol. 1, pp. 384-386.
21. Meyerhof, G.G. (1963) “Some recent research on the bearing capacity of foundations” Canadian Geotechnical Journal, 1(1), pp. 16-26.
22. Saran, S., Sud, V., and Handa, S. (1989). “Bearing Capacity of Footings Adjacent to Slopes.” Journal of Geotechnical Engineering, 115(4), pp.553-573.
23. Shields, D., Chandler, N., and Garnier, J. (1990). “Bearing Capacity of Foundations in Slopes.” Journal of Geotechnical Engineering, 116(3), pp.528-537.
24. Vesic, A.S. (1973) “Analysis of ultimate loads of shallow foundations” Journal of the Soil Mechanics and Foundations Division, 99(1), pp. 45-73.
25. Verma, B. and Char, A. (1986). “Bearing Capacity Tests on Reinforced Sand Subgrades.” Journal of Geotechnical Engineering, 112(7), pp.701-706.