不同加荷方向下横观各向同性饱和粗砂的真三轴试验研究

doi:10.12052/gdutxb.190062

Abstract

Abstract: Anisotropy is a general property of geomaterials, and transverse isotropy is the most common form of geotechnical anisotropy. Therefore, in the true triaxial test, the direction of the principal stress is different under different loading directions. The study of the constitutive properties of the different angles formed between the particle deposition directions is significant. Under the conditions of effective confining pressure of 200 kPa and medium principal stress coefficient of 0, 0.5 and 1, different sampling methods were used to conduct the drainage shear test of saturated coarse sand with α angles of 0°, 60° and 90° respectively, combined with experimental data to explore its stress strain and dilatancy characteristics. Finally, the criticality states under different alpha angles are analyzed.

Key words: transverse isotropy, stress-strain relationship, dilatancy, critical state

CLC Number:

P642

Zhou Ruo-yang, Yang Xue-qiang, Liu Pan, Zheng Li-ting, Chen Tao. A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions[J].Journal of Guangdong University of Technology, 2020, 37(01): 58-64.

References

[1] 陈立平.基于细观统计的各向异性砂土摩擦特性与破坏机制研究[J]. 岩石力学与工程学报, 2014, 33(增刊1):3291-3298.
CHEN L P. Study on friction characteristics and failure mechanism of anisotropic sand based on meso-statistics[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(Supplement 1):3291-3298.
[2] KUERBIS R VAID Y P. Sand sample preparation一the slurry deposition method[J]. Soils and Foundations, 1988, 128(4):107-118
[3] 郭莹, 陈珍.成样方法对饱和中砂静力三轴固结排水剪切试验结果的影响[J]. 土木工程学报, 2010, 43(增刊):306-311.
GUO Y, CHEN Z. Influence of sample preparation method on shear test results of saturated medium sand static triaxial consolidation drainage[J]. China Civil Engineering Journal, 2010, 43(Supplement):306-311.
[4] SONJA Z, KENJI I. Normalized behavior of very loose non-plastic soils:effects of fabric, soils and foundation[J]. Soils and Foundation, 1997, 37(4):47-56
[5] 杨仲轩, 李相崧, 等. 砂土各向异性和不排水剪切特性研究[J]. 深圳大学学报(理工版), 2009, 26(2):158-163
YANG Z X, LI X S, et al. Study on anisotropy and undrained shear properties of sand[J]. Journal of Shenzhen University (Science and Engineering Edition), 2009, 26(2):158-163
[6] 郭莹, 陈珍. 成样方法对砂土静力三轴固结不排水剪切试验结果的影响[J]. 中国港湾建设, 2010, 4(2):30-34
GUO Y, CHEN Z. Effect of sample preparation method on undrained shear test results of sand triaxial consolidation[J]. China Harbour Construction, 2010, 4(2):30-34
[7] 陈珍.成样方法对饱和中砂静力三轴试验结果的影响[D]. 大连:大连理工大学, 2010.
[8] TATSUOKA, F. The lecture note for the 2 000 Burmister Lecture[R]. New York:Columbia University, 2000.
[9] 林耀康. 细粒含量对饱和砂土力学性质影响的真三轴实验研究[D]. 广州:广东工业大学, 2018.
[10] 张沛. 饱和砂土不同应力路径剪胀与强度特性的真三轴试验研究[D]. 广州:广东工业大学, 2015.
[11] 徐斌. 细粒含量对饱和粗砂力学特性影响的真三轴试验研究[D]. 广州:广东工业大学, 2017.
[12] 孙汉芳. 饱和砂土应力-应变特性的真三轴试验研究[D]. 广州:广东工业大学, 2012.
[13] 冷艺, 栾茂田, 许成顺, 等. 饱和砂土排水与不排水剪切特性的比较研究[J]. 防灾减灾工程学报, 2008, 28(2):144-151
LENG Y, LUAN M T, XU C S, et al. Comparative study on drainage and undrained shear behavior of saturated sand[J]. Journal of Disaster Prevention and Mitigation Engineering, 2008, 28(2):144-151
[14] 栾茂田, 许成顺, 何杨, 等. 主应力方向对饱和松砂不排水单调剪切特性影响的试验研究[J]. 岩土工程学报, 2006, 28(9):1085-1089
LUAN M T, XU C S, HE Y, et al. Experimental study on influence of principal stress direction on undrained monotonic shear behavior of saturated loose sand[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(9):1085-1089
[15] LADE P V, LIGGIO CD, YAMAMURO J A. Effects of non-plastic fines on minimum and maximum void ratios of sand[J]. Geotechnical Testing Journal, 1998:336-347
[16] 刘勇健, 符纳, 陈创鑫, 等. 三轴冲击荷载作用前后软黏土的微观结构变化研究[J]. 广东工业大学学报, 2015, 32(2):23-27
LIU Y J, FU N, CHEN C X, et al. Study on microstructure changes of soft clay before and after triaxial impact load[J]. Journal of Guangdong University of Technology, 2015, 32(2):23-27

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