研究生: |
蘇淶鈞 Lai-Chun Su |
---|---|
論文名稱: |
近期應力歷史效應對台北黏土應力-應變特徵之影響 Recent Stress History Effect on Stress-Strain Characteristics of Taipei Clay |
指導教授: |
鄧福宸
Fu-Chen Teng |
口試委員: |
林宏達
Horn-Da Lin 葛宇甯 Louis Ge |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2019 |
畢業學年度: | 107 |
語文別: | 中文 |
論文頁數: | 137 |
中文關鍵詞: | 近期應力歷史效應 、台北黏土 、應力-應變特徵 |
外文關鍵詞: | Recent Stress History, Taipei Clay, Stress-Strain Characteristics |
相關次數: | 點閱:204 下載:4 |
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應力歷史效應討論著重於應力路徑方向旋轉角的改變,本研究納入「近期」、「歷史事件」綜合考量,使用台北粉土質黏土為試驗材料,並以Reconstituted Sample方式製作試體,設計五組操作變因為事件與事件間的應力路徑長度(Length of Stress Path,LSP)之三軸應力控制壓密不排水試驗(SPCU Test),探討近期應力歷史對台北黏土之應力-應變行為影響。
試驗結果顯示,土壤破壞特徵與初始勁度不受試驗設定影響,然而不同應力歷史下之勁度劣化趨勢相異,歸納出LSP對於兩次應力路徑方向旋轉角之間有交互作用,使得試驗組之間擁有相同的旋轉角,卻有不同的勁度表現,本研究認為除了應力路徑方向旋轉角度之外,LSP及多次的旋轉角度也應納入近期應力歷史。
The recent stress history effect has a significant effect on the stress-strain characteristics under small strain range. Previous research on recent stress history effect focuses only on the change of rotation angle in the direction of stress path. In addition to the rotation angle, the period and historical events have been consider in this study to define the recent stress history. Reconstituted sample of Taipei silty clay was used in this research. Triaxial stress control consolidation undrained test (SPCU test) was perform on five identical samples with different length of stress path (LSP) to investigate the influence of recent stress history on stress-strain behavior of Taipei silty clay.
The test results of the samples show similar strength and initial stiffness except the stiffness deterioration which shows different degrees of degradation. Therefore, it can be conclude that LSP influence the stress-strain behavior indirectly by the rotation angles of two stress paths, which explain the fact that the test have the same rotation angle for the samples, but different stiffness degradation performance. In addition to the rotation angle of stress path, the recent stress history should also consider LSP and multiple rotation angles.
汪中衛、王海飆、戚科駿及宰金珉(2007),「土體小應變試驗研究綜述與評價」,岩土力學,第28卷,第7期,第1518-1524頁。
秦中天及劉泉枝(1997),「台北粉質粘土體積變化與不排水行為」,中國土木水利工程學刊,第九卷,第四期,第665-678頁。
秦中天、鄭在仁及劉泉枝(1989),「台北沉泥之不排水剪力強度與過壓密比之關係」,中國土木水利工程學刊,第一卷,第三期,第245-250頁。
高明宏(2001),「台北沉泥質粘土小應變之不排水勁度模數量測」,國立台灣科技大學營建工程系碩士論文,台北。
張聰耀(1996),「台北沉泥質黏土之變形特性研究」,碩士論文,國立台灣科技大學,台北。
喬國華(1992),「台北粉土質黏土在不同應力路徑下之力學行為」,碩士論文,國立台灣科技大學,台北。
鄧福宸(2005),「異向性小應變三軸試驗儀之研發」,碩士論文,國立台灣科技大學,台北。
龔東慶(2003),「考慮台北沉泥質黏土小應變行為之深開挖地表沉陷分析」,碩士論文,國立台灣科技大學,台北。
Atkinson, J. H., Richardson, D. and Stallebrass, S. E. (1990). "Effect of recent stress history on the stiffness of overconsolidated soil", Giotechnique, Vol. 40, No. 4, pp. 531-540.
Baldi, G., Hight, D. W. and Thomas, G. E. (1988). "State-of-the-art paper: a Reevaluation of Conventional Triaxial Test Methods" Advanced triaxial testing of soil and rock, ASTM International.
Burland, J. B. (1989). "Ninth Laurits Bjerrum Memorial Lecture: ‘Small is beautiful’. The stiffness of soils at small strains" Canadian Geotechnical Journal, Vol. 26, No.4, pp. 499-516.
Cho, W. J. (2007). Recent stress history effects on compressible Chicago glacial clay, Ph.D. dissertation, Northwestern University, Evanston.
Cho, W., and Finno, R. J. (2010). "Stress-strain responses of block samples of compressible Chicago glacial clays." Journal of Geotechnical and Geoenvironmental, Vol. 136, No. 1, pp. 178-188.
Cho, W., Holman, T. P., Jung, Y.-H., and Finno, R. J., (2007). "Effects of swelling during saturation in triaxial tests in clays." Geotechnical Testing Journal, Vol. 30, No. 5, pp. 378-386.
Choo, J., Jung, Y. H., Cho, W. and Finno, R. J. (2013), “Effects of Preshear Stress Path on Nonlinear Shear Stiffness Degradation of Cohesive Soils.”, Geotechnical Testing Journal, Vol. 36, No. 2, pp.1-8
Finno, R. J. and Kim, T. (2012). "Effects of stress path rotation angle on small strain responses" Journal of Geotechnical and Geoenvironmental Engineering, Vol. 138, No. 4, pp. 526-534.
Jung, Y.-H., Cho, W. and Finno, R. J. (2007). "Defining yield from bender element measurements in triaxial stress probe experiments." Journal of Geotechnical and Geoenvironmental Engineering, Vol. 133, No. 7, pp. 841-849.
Kung, G. T.-C., Ou, C. Y. and Juang, C. H. (2008). "Modeling small-strain behavior of Taipei clays for finite element analysis of braced excavations." Computers and Geotechnics, Vol. 36, pp. 304-319.
Lacasse, S. (1979). "Effect of load duration on undrained behavior of clay and sand”, Literature Survey, NGI Internal Report 40007-1, pp.72.
Ladd, C. (1977). " Stress-deformation and strength characteristics," State of the Art Report. Proc. of 9th Int. Conf. on SMFE.
Ladd, C. C. and Foott, R., (1974). "New design procedure for stability of soft clays.", J. Geotech. Engrg. Div., ASCE, Vol. 100, pp. 763-786.
Ladd, C. C. and Lambe, T. W. (1964). "The strength of ‘undisturbed’ clay determined from undrained tests" Proceedings of the Symposium on Laboratory Shear Testing of Soils, ASTM Special Technical Publication, West Conshohocken, PA, 361, 342–371.
Ladd, C. C. (1991). "Stability evaluation during staged construction." Journal of Geotechnical Engineering, Vol. 117, No. 4, pp.540-615.
Ladd, R. J. (1978). "Preparing test specimens using undercompaction." Geotechnical Testing Journal, GTJODJ, Vol. 1, No. 1, March 1978, pp. 16-23.
Lunne, T., Berre, T., and Strandvik, S. (1997). "Sample disturbance effects in soft low plastic Norwegian clay" Proceedings of the Conference on Recent Developments in Soil and Pavement Mechanics, Rio de Janeiro, Brazil, pp. 81–102. A.A. Balkema, Rotterdam.
Owayo, A. A. (2013). "Investigation of soil deformation characteristics of insitu soil using tube samples." Ph.D. dissertation, National Taiwan University of Science and Technology, Taipei.
Pasu, M. (2012). "Evaluation of stiffness parameter of Hardening Soil model through laboratory experiment" Master thesis, National Taiwan University of Science and Technology, Taipei.
Puzrin, A. M. and Burland, J. B. (2007). "Non-linear model of small-strain behaviour of soils" Géotechnique, Vol. 48, No. 2, pp. 217-233.
Roscoe, K. H., et al. (1958). "On the yielding of soils." Géotechnique, Vol. 8, No. 1, pp. 22-53.
Santagata, M., et al. (2005). "Factors Affecting the Initial Stiffness and Stiffness Degradation of Cohesive Soils" Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge.
Seah, T. H. (1990). "Anisotropy of resedimented Boston blue clay", Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge.
Simpson, B. J. G. (1992). "Retaining structures: displacement and design" Géotechnique, Vol. 42, No. 4, pp. 541-576.
Teng, F. (2010). "Prediction of ground movement induced by excavation using the numerical method with the consideration of inherent stiffness anisotropy", Ph.D. dissertation, National Taiwan University of Science and Technology, Taipei.
Teng, F.-C. and Ou, C. Y. (2011). "Application of a suction control system in the method of specimen saturation in triaxial tests." Geotechnical Testing Journal, Vol. 34, No. 6, pp. 613-622.
Wissa, A. E. (1961). "A study of the effects of environmental changes on the stress-strain properties of kaolinite", Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge.