砂質土壤中柔性擋土牆在動態載重下的行為

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：123

、訪客IP：3.147.36.106

姓名

阮天恩(Thien-An Nguyen) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

砂質土壤中柔性擋土牆在動態載重下的行為
(The Behavior of Flexible Retaining Wall Backfilled by Cohesionless Soil Subjected to Dynamic Loading)

相關論文

★ 以離心振動臺試驗模擬緩衝材料中廢棄物罐之振動反應	★ 緩衝材料在不同圍壓下之工程性質
★ 具裂縫的緩衝材料自癒行為模擬	★ 具不同上部結構之樁基礎受振行為
★ 基盤土壤液化對上方土堤位移的影響	★ 回填與緩衝材料之動態強度
★ Effect of Vertical Drain Methods on The Soil Liquefaction	★ Centrifuge Modelling on Failure Behaviours of Sandy Slope Caused by Gravity, Rainfall and Earthquake
★ 微生物膠結作用對砂質土壤性質的影響	★ 基盤土壤液化引致的側潰對上方土堤之影響及其改善對策
★ 土壤液化引致側向滑移對樁基礎之影響及其對策	★ 挖掘機鏟斗上土壤黏附問題的基礎研究
★ 低放射性廢棄物最終處置回填材料於不同配比下之工程力學特性	★ 以離心振動台試驗探討基盤振動方向與坡向夾角對側向滑移之反應
★ 應用時域反射法於地層下陷監測之改善研發	★ Seismic response of sheet pile walls with and without anchors by centrifuge modeling tests

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
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。

摘要(中)

鋼板樁結構廣泛的運用在擋土開挖及近水公路的擋土支撐結構上。然而此類結構物於地震作用力下十分脆弱，特別是在飽和土壤的條件下。近來有許多大地工程的案例透過有線元素法模擬分析，皆得到許多成功的模擬結果，本研究目的為透過離心模型試驗結果，建立有限元素法基礎模型。
本研究首先透過地工離心機試驗分別於乾砂地盤及飽和地盤(飽和液面為下層表面)進行單排鋼板樁及雙排鋼板樁震動試驗。透過試驗結果取得系統性質並透過GeoStudio 分析軟體建立有限元素模型。
試驗結果顯示FEM模型能有效地預測鋼板樁的側向變位及最大彎矩值，但在土壤沉陷的計算上沒有良好的準確度。試驗結果顯示，鋼板樁最大彎矩值在振動試驗中高於初始穩定狀態30 %且沉陷最大處發生於樁後0.25倍樁高位置，此結果與Ou(1993)中說明開挖產生沉陷位置不同。除此之外，雙排鋼板樁試驗中呈現較小的側向變位及沉陷，由於雙排鋼板樁前後排互制下具有較高的勁度。根據本研究結果，FEM模型模擬結果考量恰當的安全係數下可以模擬離心模型試驗中鋼板樁的側向變位與彎矩值，但沉陷分析建議採用其他分析方法以取得較準確的結果。

摘要(英)

Sheet pile structure system has been widely employed for excavation, water-front structure highway, etc. as the retaining structure. However, this kind of structure is vulnerable to seismic loading especially in the saturated ground condition. In addition, the Finite Element Method (FEM) recently success in simulating many problem of geotechnical engineering, this work try to produce a benchmark of computing result base on centrifuge modeling data.
In this research, a series of test were adopted simulate the single and double wall sheetpile structure in dry and saturated (water level up to dredge line) sandy ground. The system proper-ties measured during flying the model were collected to construct a numerical model via com-mercial Finite Element Method (FEM) software GeoStudio.
The result shows that the FEM model success in estimate lateral displacement and the maxima appearance moment, meanwhile the computed settlement did not reach a high accuracy. Base on the experiment data, the maxima moment in studied seismic event is 30 percent higher than which measured at static state. The maxima settlement is located at distance equal to 0.25 of wall height that is differ from the maxima settlement due to excavation that introduced by Ou (1993). Moreover, the double wall system exhibited a smaller lateral displacement and settlement due to their higher stiffness which thank to the interaction between the front and rear sheetpile. According to this research, it may relevant to estimate the lateral displacement and moment in mentioned structure by FEM software with a suitable factor of safety, the settlement should be estimate by another method for a precise value.

關鍵字(中)

★ 柔性擋土牆
★ 動態載重
★ 離心模擬試驗
★ FEM

關鍵字(英)

★ Sheetpile
★ Dynamic loading
★ Centrifuge modeling
★ FEM

論文目次

ABSTRACT i
ACKNOWLEDGEMENT iii
TABLE OF CONTENT v
LIST OF FIGURES viii
LIST OF TABLES xiii
1. INTRODUCTION 1
1.1. Introduction 1
1.2. Scope of work 1
2. LITURATURE REVIEW 3
2.1. Literature review 3
2.2. Static condition 3
2.2.1. Static horizontal earth pressure 3
2.3. Earth pressure in dynamic loading 5
2.3.1. Mononobe-Okabe method 5
2.3.2. Seed and Whitman method 6
2.3.3. Mylonakis method 7
2.3.4. Experimental Studies 8
2.3.5. Numerical studies 11
2.3.6. Observed Field Performance of Retaining Walls during Earthquakes 14
3. CENTRIFUGE MODELING: PRINCIPLE AND TESTING EQUIPMENT 16
3.1. Centrifuge modeling principle 16
3.1.1. Scaling law 17
3.1.2. Limitation of centrifuge physical modeling 18
3.2. NCU Geotechnical Centrifuge 18
3.2.1. Servo-hydraulic shaking table 19
3.2.2. High frequency electronic transducers 19
4. SHEET PILE MODEL EXPERIMENT SCHEDULE 27
4.1. Preparation of model 27
4.1.1. Shaking event 34
4.1.2. Surface scanning 35
5. RESULTS AND DISSCUSIONS 37
5.1. Acceleration response 38
5.1.1. Amplitude amplification 38
5.1.2. Predominant frequency 44
5.2. Lateral displacement 50
5.3. Moment along the sheet pile 53
5.4. Surface deformation 60
6. NUMERICAL SIMULATION 67
6.1. Model building 67
6.1.1. Geometry 67
6.1.2. Material 67
6.1.3. Boundary condition 72
6.2. Simulation result 76
6.2.1. Lateral displacement 76
6.2.2. Moment 78
6.2.3. Settlement 83
7. CONCLUSION 85
7.1. Conclusion 85
7.2. Future work 86
APPENDIX A – SETTLEMENT DATA 87
APPENDIX B – EXPERIMENT DATA 101
REFERENCES 113

參考文獻

〔1〕 Al-Atik, L. and N. Sitar, “Seismic Earth Pressures on Cantilever Retaining Structures,” Journal of Geotechnical and Geoenvironmental Engineering, Vol. 136, No. 10, pp. 1324 - 1333 (2010).
〔2〕 Alampalli, S. and Elgamal A., ”Dynamic response of retaining walls including sup-ported soil backfill: A Computational Model,” Fourth U.S. National Conference on Earthquake Engineering, Vol. 3, pp. 623-632 (1990).
〔3〕 Al-Homoud, A. S., and Whitman, R. V., “Seismic analysis and design of rigid bridge abutments considering rotation and sliding incorporating non-linear soil behavior,” Soil Dynamics and Earthquake Engineering, Vol. 4, pp. 247-277 (1999)..
〔4〕 Clough, G.W. and Fragaszy, R.F., “A Study of Earth Loadings on Floodway Retaining Structures in the 1971 San Fernando Valley Earthquake,” Proceedings of the Sixth World Conference on Earthquake Engineering, Vol. 3 (1977).
〔5〕 Dewoolkar, M. M., Ko, H., and Pak R. Y. S., “Seismic behavior of cantilever retaining walls with liquefiable backfills” Journal of Geotechnical and Geoenvironmental Engi-neering, Vol.5, pp. 424-435 (2001).
〔6〕 Gazetas, G., Psarropoulos, P., Anastasopolous, I., and Gerolymos, N., “Seismic behav-iour of flexible retaining systems subjected to short-duration moderately strong excita-tion,” Soil Dynamics and Earthquake Engineering, Vol.24, pp. 537-550 (2004).
〔7〕 Koseki, J, Tatsuoka, F, Munaf, Y, Tateyama, M, and Kojima, K. ”A Modified Precoedure to Evaluate Active Earth Pressure at High Seismic Loads,” Soils and Founda-tions, Vol. 2, pp. 209-216, (1998).
〔8〕 Lew, M, Simantob, E, and Hudson, ME., ”Performance of Shored Earth Retaining Systems during the January 17, 1994, Northridge Earthquake”, Proceedings of the Third International 19 Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, Vol. 3, (1995).
〔9〕 Ling, HI, Leshchinsky, D, and Chou, N., ”Post-earthquake Investigation on Several Geosynthetic-reinforced Soil Retaining Walls and Slopes during the Chii-Chii Earthquake in Taiwan,” Soil Dynamics and Earthquake Engineering, Vol. 21, pp. 297-313, (2001).
〔10〕 Matsuzawa H, Ishibashi I, Kawamuara M., “Dynamic soil and water pressures of submerged soils,” Journal of Geotechnical Engineering, Vol. 10, pp. 1161-76 (1985).
〔11〕 Mononobe, N. Matsuo, M. 1929. “On the determination of earth pressures during earthquakes,” Proceedings World Engineering Conference, Vol. 9.
〔12〕 Mylonakis, G., Kloukinas, P. and Papatonopoulos, C., “An Alternative to the Mononobe-Okabe Equation for Seismic Earth Pressures”, Soil Dynamic and Earthquake Engineering, Vol. 10, pp. 957-969 (2007).
〔13〕 Nakamura, S., ”Reexamination of Mononobe-Okabe Theory of Gravity Retaining Walls Using Centrifuge Model Tests,” Soils and Foundations, Vol. 46, pp. 135-146, (2006).
〔14〕 Okabe S. ”General Theory of Earth Pressure,” Journal of the Japanese Society of Civil Engineers, Vol. 12, (1926).
〔15〕 Ortiz LA, Scott RF, Lee J., “Dynamic centrifuge testing of a cantilever retaining wall,” Earthquake Engineering and Structural Dynamics, Vol. 11, pp. 251-68, (1983).
〔16〕 Ostadan, F., “Seismic Soil Pressure for Building Walls – An Updated Approach,” Journal of Soil Dynamics and Earthquake Engineering, Vol. 25, pp. 785-793 (2005).
〔17〕 Ou, Chang-Yu, Jui-Tang Liao, and Horn-Da Lin., ”Performance of diaphragm wall constructed using top-down method.” Journal of geotechnical and geoenvironmental en-gineering , Vol. 9, pp. 798-808 (1998).
〔18〕 Psarropoulos, P.N., Klonaris, G. and Gazetas, G. (2005)., “Seismic earth pressures on rigid and flexible retaining walls.” Soil Dynamics and Earthquake Engineering, Vol. 25, pp 795-809 (2005).
〔19〕 Rankine, W. ”On the Stability of Loose Earth,” Philosophical Transactions of the Royal Society of London, Vol. 147, (1857)
〔20〕 Richards, R., Huang, C., and Fishman, K., “Seismic earth pressure on retaining struc-tures,” Journal of Geotechnical and Geoenvironmental Engineering, Vol. 9, pp. 771-778 (1999).
〔21〕 Veletsos, A., and Younan, A. (1997). “Dynamic response of cantilever retaining walls,” Journal of Geotechnical and Geoenvironmental Engineering, Vol. 2, pp.1161-172 (1997).

指導教授

洪汶宜(Wen-Yi Hung)

審核日期

2017-7-31

推文