請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/55683
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 葛宇甯(Yu-Ning Ge) | |
dc.contributor.author | Yi-Hsiu Lin | en |
dc.contributor.author | 林宜修 | zh_TW |
dc.date.accessioned | 2021-06-16T04:17:06Z | - |
dc.date.available | 2023-07-29 | |
dc.date.copyright | 2020-08-04 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2020-07-30 | |
dc.identifier.citation | 1. ASTM D4015-15 (2015). “Standard Test Methods for Modulus and Damping of Soils by Fixed-Base Resonant Column Devices” ASTM International, West Conshohocken, PA, USA 2. ASTM D6836-16 (2016). “Standard Test Methods for Determination of the Soil Water Characteristic Curve for Desorption Using Hanging Column, Pressure Extractor, Chilled Mirror Hygrometer, or Centrifuge” ASTM International, West Conshohocken, PA, USA 3. Atkinson, J.H., and Sallfors, G. (1991). “Experimental Determination of Soil Properties.” Proceedings of the 10th ECSMFE, Vol. 3, Florence, pp. 915-956 4. Bishop, A.W. (1959). “The principle of effective stress.” Teknisk Ukeblad, Vol. 106, No. 39, pp. 859-863 5. Dobry, R., and Vucetic, M. (1987). 'State-of-the-art report: Dynamic properties and response of soft clay deposits.' Proc. Int. Symp. on Geotechnical Engineering of Soft Soils, Vol. 2, 51-87. 6. Fredlund, D.G., and Morgenstem, N.R. (1977). “Stress State Variables for Unsaturated Soils.” Journal of Geotechnical Engineering Division, ASCE, Vol. 103, No. 5, pp. 447-466 7. GDS Instruments Ltd, “The GDS Resonant Column System Handbook.” 8. Goudarzy, M., Rahman, M. M., Konig, D., Schanz, T. (2016). “Influence of non-plastic fines content on maximum shear modulus of granular materials. “Soils Found 2016. 9. Hardin, B.O., Black, W. L. (1966). “Sand stiffness under various triaxial stresses.” J Soil Mech Found Division, ASCE 92(2):27–42 10. Hardin, B. O., and Black, W. L. (1968). “Vibration modulus of normally consolidated clay.” Journal of Soil Mechanics and Foundations Division, Vol. 94, No. 2, pp. 353-369 11. Hardin, B.O., and Drnevich, V.P. (1972). “Shear Modulus and Damping in Soils: Measurement and Parameter Effects.” Journal of Soil Mechanics and Foundations Division, ASCE, Vol. 98, No. 6, pp. 603-624 12. Hillel, D. (1982). “Introduction to Soil Physis.” Academic, San Diego, Calif. 13. Hilf, J. W. (1956). “An investigation of pore-water pressure in compacted cohesive soils.” Ph.D. dissertation, Technical Memo (654), U.S. Department of Interior, Bureau of Reclamation, Design and Construction Division, Denver, Colorado. 14. Hwang, C. (2002). “Determination of Material Functions for Unsaturated Flow.” Ph.D. Thesis, University of Colorado, Boulder, Colorado 15. Iwasaki, T., and Tatsuoka, F. (1977). “Effects of grain size and grading on dynamic shear moduli of sands.” Soils and Foundations, Vol. 17, No. 3, 19-35 16. Jamiolkowski, M., Lancellotta, R., LoPresti, D. (1995). “Remarks on the stiffness at small strains of six Italian clays.” In: Pre-failure Deformation of Geomaterials. American Society of Civil Engineers, New York, pp.330–345, 817–836. 17. Ke, Cheng, (2019). “The effect of plastic fines on the shear modulus and damping ratio of silty sands.” Bulletin of Engineering Geology and the Environment, 78(3). 18. Khosravi, A., and McCartney, J. S. (2011), “Resonant column test for unsaturated soils with suction–saturation control.” Geotech. Testing J., 36(6), 1–10. 19. Khosravi, A., Ghayoomi, M., and McCartney, J. S., (2010), “Impact of Effective Stress on the Dynamic Shear Modulus of Unsaturated Sand,” GeoFlorida (CD-ROM), West Palm Beach, FL, Feb 20–24, ASCE, Reston, VA. 20. Krahn, J., and Frendlund, D.G. (1972). “On Total, Matric and Osmotic Suction.” Journal of Soil Science, Vol. 114, No5, pp. 339-348 21. Lade, P. V., Liggio, C. D. and Yamamuro, J. A. (1998). “Effects of non-plastic fines on minimum and maximum void ratios of sand.” Geotechnical Testing Journal, 21, 336-347. 22. Lee, J., (2011), “Limits to Continuity of Water Flow in Unsaturated, Compacted Soils.” Ph.D. thesis, University of Colorado, Boulder, CO. 23. Liu, X., Yang, J., (2018). “Influence of size disparity on small-strain shear modulus of sandfines mixtures.” Soil Dyn. Earthq. Eng. 115, 217–224. 24. McGeary, R. K., (1961), 'Mechanical packing of spherical particles.' Journal of the American Ceramic Society 44, no. 10 (1961): 513-522. 25. Ni, Q., Tan, T. S., Dasari, G. R., Hight, D. W., (2005). “Discussion: contribution of fines to the compressive strength of mixed soils.” Géotechnique 55(8), 627–628. 26. Payan, M., Senetakis, K., Khoshghalb, A., Khalili, N., (2017), “Characterization of the small-strain dynamic behaviour of silty sands; contribution of silica non-plastic fines content.” Soil Dyn. Earthq. Eng. 102:232–40. 27. Qian, X., Gray, D. H., and Woods, R. D., (1991), “Resonant Column Tests on Partially Saturated Sands.” Geotech. Testing J., Vol. 14, No. 3, pp. 266–275. 28. Thevanayagam, S. (2007). “Intergrain contact density indices for granular mixes-Ⅰ: Framework.” Earthquake Engineering and Engineering Vibration, 6(2), 123-134. 29. van Genuchten, M. T., (1980), “Closed-form equation for predicting the hydraulic conductivity of unsaturated soils.” Soil Sci. Soc. Am. J. 44, 892–898. 30. Wichtmann, T., Navarrete Hernández, M. A., Triantafyllidis, T., (2015). “On the influence of a non-cohesive fines content on small strain stiffness, modulus degradation and damping of quartz sand.” Soil Dyn. Earthq. Eng. 69, 103–114. 31. Znisarcic, D., Illangasekare, T., and Manna, M. (1991). “Laboratory Testing and Parameter Estimation for Two-Phase Flow Problems.” Geotechnical Engineering Congress. ASCE, New York. 32. 陳湧文 (2017),「定流量幫浦法應用於不飽和土壤水份特性曲線之量測」,國立台灣大學土木工程學系研究所,碩士論文。 33. 李柏廷 (2018),「以定流量幫浦法量測乾溼測之土壤水分特徵曲線」,國立台灣大學土木工程學系研究所,碩士論文。 34. 連家瑩 (2018),「共振柱試驗及動力三軸試驗下澎湖鈣質砂的動態性質」,國立臺灣大學土木工程學系研究所,碩士論文。 35. 葉憶萱 (2018),「細顆粒含量對於粗細砂混合物之力學性質的影響」,國立臺灣大學土木工程學系研究所,碩士論文。 36. 李亞儒 (2019),「以二元混和物之框架探討砂土於動態荷載後之行為」,國立臺灣大學土木工程學系研究所,碩士論文 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/55683 | - |
dc.description.abstract | 土壤之動態特性,像是動態剪力模數以及阻尼比,是土壤動態分析中不可或缺之參數,常被用於預測土壤中的波傳,以評估土壤結構物之動態行為。現地土壤通常是由不同粒徑大小之顆粒組合而成,並因蒸發與降雨,隨著不同深度,有著不同飽和度的變化。而不論是顆粒之排列或是飽和度,都被研究證實對於土壤之行為有著相當的影響。近年來,許多學者提出二元混和物的概念,試著以兩種粒徑大小之混和試體,解釋現地土壤中細粒料含量的對於其排列以及力學行為影響。 本研究以不同的細粒料含量以及不同的飽和度作為出發點,探討二元混和物之動態特性。採用非塑性的越南石英砂作為材料,其粗細顆粒有效粒徑比為12.07。從全粗粒料到全細粒料,對八種不同細粒料含量之二元混和物進行共振柱試驗。分別控制相對密度為50%、孔隙比為0.55,以及六種不同飽和度,對細粒料含量在動態特性上之影響做完整的比較,並套用Thevanayagam 在2007年所提出之分類,探討傳統孔隙比與等效粒間孔隙比在二元混和物上的適用性。另外,以流量幫浦試驗,量測0%與35%細粒料含量下之土壤水分特徵曲線,比較細粒料含量對其之影響,並將此試驗所得到之基質吸力結果,套用進不飽和共振柱試驗,試以基質吸力之概念,解釋不飽和土壤之動態特性變化。 根據本研究實驗結果顯示,細粒料含量對於最大剪力模數的影響是非線性的,共出現了兩次轉折點,探討其影響原因為粗細粒料本身之力學行為,以及粗細粒料交互作用之影響。對於正規化之剪力模數,細粒料含量位於15%到50%時,會有較快速的折減趨勢,因其狀態介於粗顆粒主控與細顆粒主控之間,較易因小應變而改變其排列並影響其強度。另外,傳統孔隙比被證實不適用於二元混和物,而等效粒間孔隙比則能更有效的描述二元混和物實際之顆粒接觸情形。由流量幫浦試驗所求得之土壤水分特徵曲線結果可發現,細粒料含量對於土壤之殘餘飽和度以及基質吸力上升之趨勢影響並不明顯,而是影響其基質吸力之大小,細粒料含量愈高其基質吸力隨之上升。並可以由基質吸力之角度,對於不飽和土壤之動態特性做出相對的解釋。 | zh_TW |
dc.description.abstract | Dynamic properties, such as shear modulus and damping ratio, are significant and indispensable parameters in dynamic analysis of soils. They are widely used to evaluate wave propagation in soils to assess the dynamic response of structures above. In-situ soils are composed by different sizes of particle, and various degrees of saturation along the depth due to the evaporation and rainfall. Both of particles configuration and degree of saturation, have been studied to have immense effects on behaviors of soil. In recent years, the concept of binary mixtures is proposed by several researchers. It tries to illustrate the influence of fines content and the arrangement of particles on soils mechanical behaviors, by the mixtures of two different particle sizes. This study starts from the perspectives of fines content and degree of saturation, and focuses on investigation of dynamic properties of binary mixtures. Non-plastic Vietnam silica sand mixtures with effective size ratio of 9.66 are used. From pure coarse particles to pure fine particles, binary mixtures with eight different fines content are conducted resonant column test to comprehensively investigate the effects of fines content. The classifications of binary mixtures proposed by Thevanayagam (2007) are applied to discuss the applicability of global void ratio and equivalent intergrain void ratio on the binary mixtures. Furthermore, flow pump tests are conducted with 0% and 35% fines content mixtures, to measure the soil water characteristics curve and compare the influence of fines content on it. The measured matric suctions are applied to the results of unsaturated resonant column test, trying to interpret the change on dynamic properties of unsaturated soils by the concept of matric suction. According to the results, the effects of fines content on maximum shear modulus (Gmax) are non-linear, as two inflection points are observed. Two major factors are proposed, the original behavior of pure coarse and fine particles, and the interactive effect between coarse and fine particles, respectively. The normalized shear modulus (G/Gmax) shows that the mixtures with fines content between 15% to 50% reduce more obviously with shear strain increasing. Furthermore, global void ratio is validated not suitable in binary mixtures, and equivalent intergrain void ratio has a better description on the actual contact of binary mixtures. Soil water characteristics curve obtained from flow pump tests shows that fines content does not have obvious effects on residual degree of saturation and the increasing rate of matric suction, but affects the value of matric suction. Higher fines content induces higher value of matric suction. The dynamic properties of unsaturated soil can be illustrated from the perspective of matric suction. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T04:17:06Z (GMT). No. of bitstreams: 1 U0001-2907202012270100.pdf: 5461146 bytes, checksum: ea58a7e65b634904f980c7208da0d2f7 (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | 論文口試委員審定書 I ACKNOWLEDGMENTS II 摘要 III ABSTRACT V CONTENTS VII List of Figures X List of Tables XVI CHAPTER 1 INTRODUCTION 1 1.1 Introduction 1 1.2 Research Objectives 2 1.3 Thesis Outline 3 CHAPTER 2 LITERATURE REVIEW 5 2.1 Dynamic Properties of Soil 5 2.1.1 Definition of Soil Dynamic Properties 5 2.1.2 Measurement of Dynamic Properties of Soil 7 2.1.3 Influencing Factors of Dynamic Properties of Soil 11 2.2 Packing Theory 13 2.2.1 Binary Mixtures and Particle Size Ratio 13 2.2.2 Previous Studies on Binary Mixtures 15 2.2.3 Intergrain Contact Density Indices for Granular Mixtures 16 2.2.4 Resonant Column Test with Binary Mixtures 20 2.3 Properties of Unsaturated Soil 22 2.3.1 Composition of Unsaturated Soil 22 2.3.2 Soil-Water Characteristics Curve (SWCC) 23 2.3.3 Measurement of SWCC 25 2.3.4 Resonant Column Test with Various Degrees of Saturation 28 CHAPTER 3 EXPERIMENTAL PROGRAM 44 3.1 Objectives 44 3.2 Materials and Physical Properties 45 3.3 Experimental Program 46 3.4 Flow Pump Test 47 3.4.1 Apparatus 47 3.4.2 Experiment Procedures 50 3.5 Resonant Column Test 55 3.5.1 Apparatus 55 3.5.2 Experiment Procedures 58 CHAPTER 4 RESULTS AND DISSCUSIONS 87 4.1 Dynamic Properties of Different Fines Content 87 4.1.1 Dry Specimen with a Controlled Relative Density 87 4.1.2 Saturated Specimen with Controlled Relative Density 91 4.1.3 Saturated Specimen with a Controlled Global Void Ratio 92 4.1.4 Application of Intergrain Void Ratio 93 4.2 Unsaturated Behavior at Different Fines Content 97 4.2.1 Results of the Flow Pump Tests 97 4.2.2 Discussion on Unsaturated Behavior at Different Fines Content 97 4.3 Dynamic Properties at Different Degrees of Saturation 99 4.3.1 Results of the Resonant Column Tests on Partially Saturated Specimen 99 4.3.2 Discussion under the Concept of Unsaturated Behavior 100 CHAPTER 5 CONCLUSIONS AND RECOMMENDATIONS 120 5.1 Conclusions 120 5.2 Recommendations 122 REFERENCE 123 Q A 128 | |
dc.language.iso | en | |
dc.title | 以共振柱試驗探討二元混和物之動態特性 | zh_TW |
dc.title | Dynamic Properties of Binary Mixtures by Resonant Column Test | en |
dc.type | Thesis | |
dc.date.schoolyear | 108-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 楊國鑫(Kuo-Hsin Yang),李安叡(An-Jui Li),邱俊翔(Jiunn-Shyang Chiou) | |
dc.subject.keyword | 動態特性,二元混和物,共振柱試驗,等效粒間孔隙比,不飽和土壤,流量幫浦試驗,基質吸力, | zh_TW |
dc.subject.keyword | dynamic properties,binary mixture,resonant column test,equivalent intergrain void ratio,unsaturated soil,flow pump test,matric suction, | en |
dc.relation.page | 133 | |
dc.identifier.doi | 10.6342/NTU202002028 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2020-07-30 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 土木工程學研究所 | zh_TW |
顯示於系所單位: | 土木工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
U0001-2907202012270100.pdf 目前未授權公開取用 | 5.33 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。