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

广东工业大学学报 ›› 2020, Vol. 37 ›› Issue (01): 58-64.doi: 10.12052/gdutxb.190062

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

周若洋, 杨雪强, 刘攀, 郑丽婷, 陈涛

广东工业大学土木与交通工程学院, 广东广州 510006

收稿日期:2019-04-30 出版日期:2020-01-25 发布日期:2019-12-31
通信作者: 杨雪强(1966-),男,教授,博士,主要研究方向为岩土本构关系及边坡稳定等,E-mail:xqyfls@126.com E-mail:xqyfls@126.com
作者简介:周若洋(1991-),男,硕士研究生,主要研究方向为岩土工程试验及数值计算
基金资助:
中国博士后科学基金资助项目（2017M622635）

A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions

Zhou Ruo-yang, Yang Xue-qiang, Liu Pan, Zheng Li-ting, Chen Tao

School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China

Received:2019-04-30 Online:2020-01-25 Published:2019-12-31

摘要/Abstract

摘要： 各向异性是岩土材料普遍具有的性质，而横观各向同性是岩土各向异性最通常的表现形式，因此在真三轴试验中，不同加荷方向下的大主应力方向与颗粒沉积方向之间形成的不同夹角（α角）对其本构特性影响的研究是具有意义的。在有效围压为200 kPa，中主应力系数为0，0.5，1的条件下，采用不同的制样方法，分别进行α角为0°，60°，90°的饱和粗砂进行排水剪切试验，并结合试验数据探究其应力应变及剪胀特性。最后，通过分析似临界状态下有效球应力p'–偏应力q曲线和lnp'–孔隙比e曲线，得出不论α角取何值，其临界状态都是存在的。

关键词: 横观各向异性, 应力应变关系, 剪胀性, 临界状态

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

中图分类号:

P642

周若洋, 杨雪强, 刘攀, 郑丽婷, 陈涛. 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[J]. 广东工业大学学报, 2020, 37(01): 58-64.

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.

参考文献

[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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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

A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions

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