Triaxial creep characteristics and empirical model for saturated coral sand

被引：0

作者：

Xue P. ^{[1
]}

Zhou X.-Q. ^{[2
]}

Cai Y.-Y. ^{[1
]}

Ma L.-J. ^{[3
]}

Liao R.-G. ^{[1
]}

Yu J. ^{[1
]}

机构：

[1] Fujian Research Center for Tunneling and Urban Underground Space Engineering, Huaqiao University, Xiamen

[2] School of Civil Engineering & Architecturel, Xiamen University of Technology, Xiamen

[3] State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2020年 / 42卷

关键词：

Coral sand; Creep characteristic; Creep model;

D O I：

10.11779/CJGE2020S2045

中图分类号：

学科分类号：

摘要：

The riaxial drainage creep tests are performed on saturated coral sand under different cell pressures and deviator stress levels. The results show that the cell pressure and deviator stress have significant effects on creep deformation. The specific performance is that when the deviator stress is large or the cell pressure is small, the creep deformation is large, and the creep phenomenon is obvious. The traditional Singh-Mitchell and Mesri creep models are used to describe the creep characteristics of coral sand. It is found that the calculated results of the two models are quite different from the test results under high deviator stress conditions, which cannot accurately describe the creep behavior of the coral sand. By analyzing the reasons for the large error between the model and the test results, the stress-strain and strain-time relationships are expressed by hyperbolic functions, and a new creep model is established. The predicted results of the new model are in good agreement with the test results. © 2020, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：255 / 260

页数：5

共 21 条

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