Influence of cyclic preshearing on the monotonic shear behavior of saturated silt under undrained conditions

被引：0

作者：

Zhao K. ^{[1
]}

Jiang P. ^{[1
]}

Qin Y. ^{[1
]}

Wu Q. ^{[1
]}

Chen G. ^{[1
]}

机构：

[1] Institute of Geotechnical Engineering, Nanjing Technology University, Nanjing

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 08期

关键词：

Cyclic loading patterns; Cyclic preshearing; Liquefaction level; Saturated silt; Strength of phase transition; Undrained monotonic shearing behavior;

D O I：

10.11990/jheu.201902030

中图分类号：

学科分类号：

摘要：

This study investigated the effects of cyclic preshearing on the undrained mechanical properties of saturated silt, considering different cyclic loading histories. Cyclic preshearing and secondary consolidation static shear tests were performed on saturated silt ( D r=50%) subject to different cyclic stress ratios and cyclic loading manners by utilizing a GDS hollow cylinder torsional shear apparatus. Testing results indicate that with the rise of liquefaction level, the volumetric strain generated from the reconsolidation of saturated silt increases gradually, stress hardening enhances gradually, and the strength of phase transition SPT increases gradually. However, the effective internal friction angle shows no significant change. Under a constant confining pressure, the shearing features, such as volumetric strain, stress-strain relationship, effective stress path, strength of phase transition SPT, and effective internal friction angle of the phase transition, show no correlation with the prior cyclic stress ratio and cyclic loading patterns. This study has practical significance to engineering construction in silty areas. Copyright ©2020 Journal of Harbin Engineering University.

引用

页码：1184 / 1189

页数：5

共 15 条

[1]

CHERN J C, LIN C C., Post-cyclic consolidation behavior of loose sands, Proceedings of Vertical and Horizontal Deformations of Foundations and Embankments, pp. 740-747, (1994)

[2]

SANIN M V, WIJEWICKREME D., Cyclic shear response of channel-fill Fraser River Delta silt[J], Soil dynamics and earthquake engineering, 26, 9, pp. 854-869, (2006)

[3]

ASHOUR M, NORRIS G, NGUYEN T., Assessment of the undrained response of sands under limited and complete liquefaction[J], Journal of geotechnical and geoenvironmental engineering, 135, 11, pp. 1772-1776, (2009)

[4]

PAN K, CAI Y Q, YANG Z X, Et al., Liquefaction of sand under monotonic and cyclic shear conditions:impact of drained preloading history, Soil dynamics and earthquake engineering, 126, (2019)

[5]

ZHANG Zhendong, LUAN Maotian, JIN Dan, Et al., Effect of cyclic preloading on resistance to liquefaction of saturated loose sand, Journal of Dalian University of Technology, 50, 1, pp. 111-116, (2010)

[6]

ARAB A, BELKHATIR M., Fines content and cyclic preloading effect on liquefaction potential of silty sand:a laboratory study[J], Acta polytechnica hungarica, 9, 4, pp. 47-64, (2012)

[7]

YE Bin, LU Jiafeng, YE Guanlin, Pre-shear effect on liquefaction resistance of a Fujian sand[J], Soil dynamics and earthquake engineering, 77, pp. 15-23, (2015)

[8]

YASUHARA K, MURAKAMI S, SONG B W, Et al., Postcyclic degradation of strength and stiffness for low plasticity silt[J], Journal of geotechnical and geoenvironmental engineering, 129, 8, pp. 756-769, (2003)

[9]

ZENG Changnu, WANG Xinjian, Influence of fine particle content on post-liquefaction deformation behavior of silt in low-strength section, Advances in science and technology of water resources, 28, 2, pp. 16-18, (2008)

[10]

ZENG Changnu, Experimental study on the influence of silt particle content to post-liquefaction deformation in silt ground, Northwestern seismological journal, 30, 2, pp. 139-144, (2008)

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