文章基本信息

标题：Study on Rheological Constitutive Model of Landslide Loess in Tianshui City under Triaxial Condition with Variable Water Content
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作者：Yajun Jia ; Cunli Chen
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2020
卷号：558
期号：3
页码：1-7
DOI：10.1088/1755-1315/558/3/032042
语种：English
出版社：IOP Publishing
摘要：This paper analyses the water content of landslide loess in Tianshui City, Gansu Province. Through triaxial cyclic loading and unloading rheological tests, the creep curves and water content forms of landslide loess under different confining pressures are obtained, and their rheological constitutive model for analysis. The rheological constitutive model test under triaxial conditions shows that under low and high stress conditions, the creep strain rate decreases with time, which is manifested as decelerating creep; only under high stress conditions, creep strain The rate undergoes a process of decreasing first, then stabilizing, and finally increasing, corresponding to the three stages of deceleration creep, constant velocity creep and acceleration creep. The specimen will produce a certain instantaneous elastic deformation under different stresses. The rheology of loess has a nonlinear characteristic. The stress-strain iso-curve gradually shifts toward the strain axis as the stress level increases, and the degree of nonlinearity increases as the stress increases.