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研究生:楊志偉
研究生(外文):zhi-wei yang
論文名稱:土釘擋土牆之數值分析與影響參數研究
論文名稱(外文):Numerical Analysis of Soil Nailed Structures and Parameters Study
指導教授:吳朝賢
學位類別:碩士
校院名稱:淡江大學
系所名稱:土木工程學系
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
中文關鍵詞:土釘數值分析潛在滑動面參數研究
外文關鍵詞:soil nailednumerical analysispotential slip surfaceparameters study
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本研究的目的,在以數值分析的方法,研定土釘擋土結構潛在滑動面的找尋方式,與評估整體穩定性的方法,並討論設計參數對土釘擋土結構行為與穩定性之影響。首先以室內模型砂箱試驗為分析對象,以有限差分程式FLAC,建立土釘擋土牆的數值分析模式,並與模型土釘試驗結果相比較以確認數值模式的適用性;進而,針對數值分析,以局部最小安全係數法,研定出找尋土釘擋土牆潛在滑動面的方法,以及整體滑動安全係數的評定方式;最後,針對一基本案例(為一中等緊密砂土,相對密度60%,土壤單位重15.2 KN/m3,開挖高度7m,土釘長度5m,土釘傾角:0、15、30度,土釘強度:#4、#8、#14)進行一系列的參數研究,以探討各參數對土釘擋土結構行為的影響。分析結果顯示:(1) 土釘強度對土釘最大張力與面版位移的影響,隨土釘傾角的增加而變大;剛性土釘(N>3)的滑動面位置較柔性土釘(N<3)的滑動面位置遠離牆面;除柔性土釘由土釘斷裂破壞控制外,其它皆由土釘拉出破壞控制。(2)土釘傾角大於15度時,面版位移大幅增加,滑動面往牆後方發展,整體穩定性下降;當打設土釘強度增大時,土釘軸力整體增加幅度較大,而整體穩定安全係數的提昇則有限。(3) 土釘撓曲勁度與面版厚度,對土釘結構整體行為之影響很小,土釘主要受力機制為張力。(4) 土釘埋置長度與開挖深度之比值(L/H)大於等於1.0時,破壞機制由土釘拉出破壞轉為土釘斷裂破壞控制,再增加土釘長度,對於整體穩定性無法提昇。(5) 增加土釘打設密度,有助於降低底層土釘所受最大張力,提高整體穩定性,並使滑動面往牆後方延伸。
The purposes of this research is to figure out the method for identifying the potential slip surface and evaluating the global safety of factor of a soil-nailed retaining structures, and discuss the effect of designing parameter on its mechanical behavior.
Firstly, build-up the numerical modeling of a model soil-nailed experiment with the finite difference program-FLAC, and compare the results with the measured data to confirm the adequate of numerical model. Then, a systematic way is developed to find the potential slip surface and to evaluate the global stability of soil-nailed structures based on the local minimum factor-of-safety approach. Finally, aiming at a basic case (a medium dense sand, relative density 60%, unit weight 15.2KN/m3, excavation depth 7m, nail length 5m, nail inclination 0,15 and 30 degree, nail strength #4, #8, #14 steel) to proceed a series of parameters study to discuss the effect on the structure behavior.
Research result shows that: (1) The effect of nail strength on nail maximum tensile force and plate displacement is increase with the increase of nail inclination. The slip surface for rigid nail (N>3) is farther away from wall than flexible nail (N<3). Only flexible nail is controlled by breakage failure, the others are by pull-out failure. (2) when inclination greater than 150, the global stability decrease , and as nail strength increase, the increase of global safety factor is limited. (3) The effect of increasing nail bending stiffness and plate thickness is small on the whole structure behavior, and nail is mainly take in tension. (4) When the ratio of nail length and excavation depth is equal and greater than 1.0, the failure is transfer from nail pull-out to nail breakage. (5) Increasing nail number help reducing the maximum tensile force in the bottom nail, raising the global stability, and force the slip surface away from wall.
中文摘要…………………………………………………………I
英文摘要………………………………………………………...II
目錄……………………………………………………………..一
表目錄…………………………………………………………..四
圖目錄…………………………………………………………..五
第一章 導論……………………………………………………..1
1.1研究動機與目的1
1.2研究方法1
1.3研究內容2
第二章 文獻回顧3
2.1土釘擋土牆數值分析模擬3
2.1.1土壤元素之模擬3
2.1.2土釘之模擬4
2.1.3界面元素之模擬4
2.1.4面版之模擬5
2.1.5開挖之模擬5
2.2 土釘擋土牆之穩定性分析5
2.2.1 整體穩定分析6
2.2.2 局部穩定分析12
2.3 土釘擋土牆設計參數之研究15
2.3.1土釘之傾角16
2.3.2土釘之撓曲勁度17
2.3.3牆面之厚度17
2.3.4 土釘埋置長度18
2.3.5 土釘打設間距18
2.3.6 外加載重19
第三章 模型土釘試驗之數值分析30
3.1 土壤模式之建立30
3.2 土壤模式之驗證32
3.3 模型土釘之力學及界面行為32
3.4 模型砂箱試驗之數值分析33
3.5 數值分析之結果34
3.5.1 土釘軸力之分佈34
3.5.2 牆面版之水平位移35
第四章 土釘擋土牆之潛在滑動面54
4.1 理論背景54
4.2 找尋可能滑動面的方法55
4.3 安全係數之定義57
4.4 實例分析與比對58
4.4.1 室內模型砂箱試驗案例58
4.4.2 法國足尺試驗案例59
第五章 土釘擋土牆力學行為影響參數研究75
5.1 研究案例說明75
5.2 研究方法與內容76
5.2.1 研究方法76
5.2.2 研究內容77
5.3 參數研究之結果78
5.3.1 土釘強度與傾角78
5.3.2 土釘撓曲勁度與軸向勁度79
5.3.3 土釘打設間距80
5.3.4 土釘埋置長度80
5.3.5 面版厚度81
第六章 結論與建議…………………………………………..102
6.1 結論102
6.2 建議104
參考文獻………………………………………………………105
附錄一 土壤組成數值分析模式……………………………..110
附錄二 最小安全係數法之副程式…………………………..113
1.陳肇元、崔京浩 (1997),「土釘支撐在基礎工程中的應用」,中國建築出版社。
2.宋二祥、陳肇元 (1996),「土釘支撐及其有限元分析」,工程勘查,1996年第2期。
3.洪勇善與陳榮河(1997),「土釘擋土牆數值模擬與影響參數之研究」,第七屆大地工程學術研究討論會論文集,台北,第471-478頁。
4.陳榮河與李榮基 (1990),「土壤與地工織物剪力行為之研究」,中國土木水利工程學刊,第二卷,第三期,第235-244頁。
5.何嘉浚(1996),「土釘擋土結構設計方法之探討」,國立台灣大學土木工程研究所,碩士論文,台北。
6.洪勇善(1999),「土釘擋土結構之力學行為」,國立台灣大學土木工程研究所,博士論文,台北。
7.梅方奇 (1999),「基礎開挖土釘加勁支撐行為之探討」,私立淡江大學土木工程研究所,碩士論文,台北。
8.Beech, J., Delaure, E. and Juran, I. (1984), " Experimental Study of the Behavior of Nailed Soil Retaining Structures on Reduced Scale Models," Proceeding of the International Symposium on In-Situ Soil and Rock Reinforcement, Paris, pp.309-314.
9.Duncan, J. M. and Chang, C. Y. (1970), "Nonlinear Analysis of Stress and Strain in Soil," Journal of the Soil Mechanics and Foundations Division, ASCE, Vol. 96, No. SM5, pp.1629-1653.
10.Duncan, J. M., Seed, R. B., Wong, K. S. and Ozawa, Y. (1984), "FEADAM84: A Computer Program for Finite Element Analysis of Dams," Geotechnical Engineering Research Report, NO. SU/GT/84-03, Stanford University, U.S.A..
11.Elias, V. and Juran, I. (1991), " Soil Nailing for Stabilization of Highway Slopes and Excavations," FHWA-RD-89-198, Federal Highway Administration.
12.Goodman , R. E. and Brown , C. B. (1963), "Dead load Stress and the Instability of Slopes," Journal of the Soil Mechanics and Foundation Division, ASCE, Vol. 89, No. SM3, pp.103-134.
13.Herrmann, L. R. and AL-Yassin, Z. (1978), "Numerical Analysis of Reinforced Soil Systems," Proceedings of ASCE Symposium on Earth Reinforcement, Pittsburgh, pp.428-457.
14.Huang, S. L. and Yamasaki, K. (1993), "Slope Failure Analysis Using Local Minimum Factor-of-Safety Approach," Journal of Geotechnical Engineering, ASCE, Vol. 119, No.12, pp.1974-1987
15.Jewell, R. A. (1980), "Some Effects of Reinforcement on the Mechanical Behavior of Soils," Ph.D Thesis, Cambridge University.
16.Jewell, R. A. and Pedley, M. J. (1992), "Analysis for Soil Reinforcement with Bending Stiffness," Journal of Geotechnical Engineering, ASCE, Vol. 118, No. 10, pp.1505-1528.
17.Juran, I., Baudrand, G., Farrag, K. and Elias, V. (1990a), "Kinematical Limit Analysis for Design of Soil-Nailed Structures," Journal of Geotechnical Engineering, ASCE, Vol. 116 No. 1, pp.54-72.
18.Juran, I., Baudrand, G., Farrag, K. and Elias, V. (1990b), "Design of Soil Nailed Retaining Structures," ASCE Geotechnical Special Publication, No. 25, New York, pp. 644-659.
19.Juran, I. and Elias, V. (1987), " Soil Nailed Retaining Structures, Analysis of Case Histories," ASCE Geotechnical Special Publication, No. 12, New York, pp.152-168.
20.Juran, I., Shafiee, S. and Schlosser, F. (1985), " Numerical Study of Nailed Soil Retaining Structures," Proceedings of the Eleventh International Conference on Soil Mechanics and Foundation Engineering, San Francisco, pp.1713-1716.
21.Kakurai, M. and Hori, J. (1990), "Soil-Reinforcement with Steel Bars on a Cut Slope," Performance of Reinforced Soil Structures, Proceedings of the International Reinforced Soil Conference, British Geotechnical Society, pp.213-217.
22.Kim, D. S., Juran, I., Nasimov, R., and Drabkin, S. (1995), "Model Study on the Failure Mechamism of Soil-Nailed Structure Under Surcharge Loading," Geotechnical Testing Journal, GTJODJ, Vol. 18 No. 4, pp.421-430
23.Long, J. H., Sieczkowski, W. F., Chow, E. and Cording, E. J. (1990), "Stability Analysis for Soil Nailed Walls," Geotechnical Special Publication, No. 25, ASCE, New York, pp.676-691.
24.Matsui, T., San, K. C. and Hayashi, K. (1990), "Design and Field Test on a Reinforced Cut Slope," Performance of Reinforced Soil Structures, Proceedings of the International Reinforced Soil Conference, British Geotechnical Society, pp.235-239.
25.Mitchell, J. K. and Villet, C. B. (1987), "Reinforcement of Earth Slopes and Embankment," NCHRP Report 290, Transportation Research Board, Washington, D.C.
26.Pfister, P. and Evers, M. (1982), " Permanent Ground Anchors, Soletanche Criteria," FHWA-RD-81-150, Washington, D. C.
27.Plumelle, C. and Schlosser, F. (1990), " A French National Research Project on Soil Nailing:Clouterre," ASCE Geotechnical Special Publication, No. 25, New York, pp.219-223.
28.Plumelle, C., Schlosser, F., Delage, P. and Knochenmus, G. (1990), " French National Research Project on Soil Nailing:CLOUTERRE," ASCE Geotechnical Special Publication, No. 25, New York, pp. 660-675.
29.Raju, G. V. R. (1996), ” Behavior of Nailed Soil Retaining Structures,” Ph.D. Thesis, Nanyang Technological University, Singapore.
30.Salama, M. E. (1992), " Analysis of Soil Nailed Retaining Walls," Ph.D. Thesis, University of Illinois.
31.Schlosser, F. (1982), " Behavior and Design of Soil Nailing," Proceeding of the International Symposium on Recent Development in Ground Improvement Techniques, Bangkok, pp. 399-413.
32.Schlosser, F. and Buhan, P. (1990), " Theory and Design Related to the Performance of Reinforced Soil Structures," Performance of Reinforced Soil Structures, Proceeding of the International Reinforced Soil Conference, British Geotechnical Society, pp. 1-14.
33.Schlosser, F., Unterreiner, P. and Plumelle, C. (1992), " French Research Program CLOUTERRE on Soil Nailing," ASCE Geotechnical Special Publication, No.30, New York, pp. 739-750.
34.Shen, C. K., Bang, S., Romstad, K. M., Kulchin, L. and Denatale, J. S. (1981a), "Field Measurements of an Earth Support System," Journal of the Geotechnical Engineering Division, ASCE, Vol. 107, No. GT12, pp.1625-1642.
35.Shen, C. K., Herrmann, L. R., Romstad, K. M., Bang, S., Kim, Y. S. and Denatale, J. S. (1981b), " In Situ Earth Reinforcement Lateral Support System," Report No.81-03, Department of Civil Engineering, University of California, at Davis.
36.Shewbridge, S. E. and Sitar, N. (1990), "Deformation-Based Model for Reinforced Sand," Journal of Geotechnical Engineering, ASCE, Vol. 116, No. 7, pp.1153-1170.
37.Stocker , M. F., Korber, G. W., Gassler, G. and Gudehus, G. (1979), " Soil Nailing," Proceeding of the International Conference on Soil Reinforcement, Paris, pp. 469-474.
38.Stocker, M. F. and Riedinger, G. (1990), " The Bearing Behavior of Nailed Retaining Structures," ASCE Geotechnical Special Publication No. 25, New York, pp. 612-628.
39.Thompson, S. R. and Miller, I. R. (1990), " Design, Construction and Performance of a Soil Nailed Wall in Seattle Washington," Proc ASCE Conference Design and Performance of Earth Retaining Structures, ASCE Geotechnical Special Publication No. 25, New York, pp. 629-643.
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