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Experimental study on the mechanical properties and deformation failure characteristics of sandstone under graded equal amplitude cyclic loading and unloading [PDF]

open access: yesScientific Reports
To investigate the effects of graded equal amplitude cyclic loading on rock deformation and failure, this study examines the influence of confining pressure and upper limit cyclic stress on the deformation parameters, stress–strain hysteresis curves, and
Zhiwei Ni   +5 more
doaj   +2 more sources

Effects of intermittent cyclic loading with cyclic confining pressure on deformation behaviors of saturated clay

open access: yesYantu gongcheng xuebao, 2023
Traffic loading is composed of cyclic loading and intermittent periods, in which the influences of intermittent period on the dynamic characteristics of soil cannot be ignored.
HUANG Juehao 1, 2, WANG Hongchao 3, CHEN Jian 1, 2, FU Xiaodong 1, 2, YAN Xiaoling 4, 1, MA Chao 1
doaj   +1 more source

Post-cyclic strength behaviors of undisturbed soft soils with different degrees of reconsolidation

open access: yesYantu gongcheng xuebao, 2021
The soft soil after cyclic loading is often in an intermediate state between unconsolidated and fully reconsolidated after a period of time, which can be described by the concept of degree of reconsolidation. At present, there are few studies considering
LU Yuan 1, 2, CHEN Dong-ge 8, CHEN Jian 1, 2, 3, 4, 5, 6, YU Song 7, HUANG Jue-hao 1, 2, 3, 4, FU Xiao-dong 1, 2, MA Chao 1
doaj   +1 more source

Coupling effects of bidirectional cyclic loading and loading frequency on pore water pressure of saturated soft clay

open access: yesYantu gongcheng xuebao, 2017
A series of undrained cyclic tests with variable confining pressures are conducted on Ningbo saturated soft clay by using the GDS cyclic triaxial system. In this study, the coupling effects of cyclic deviatoric stress and cyclic confining pressure on the
HUANG Jue-hao 1, 2, CHEN Jian 1, 2, KE Wen-hui 3, ZHONG Yu 4, QIU Yue-feng 1, 2
doaj   +1 more source

The effect of confinement in liquefaction tests carried out in a cyclic simple shear apparatus [PDF]

open access: yesE3S Web of Conferences, 2019
The cyclic simple shear tests can be used to reproduce in laboratory the complex behaviour of the soil during an earthquake, simulating the continuous rotation of the principal stress axes.
Mele Lucia   +2 more
doaj   +1 more source

Experimental study on damping ratio of overconsolidated clay under different cyclic confining pressures

open access: yesYantu gongcheng xuebao, 2022
Traffic loading is usually simulated by single cyclic deviator stress. However, the vertical normal stress and horizontal stress acting on the soil elements are all varied cyclically under the traffic loading.
HUANG Jue-hao 1, 2, CHEN Jian 1, 2, 3, YU Song 4, YAN Xiao-ling 5, 1, ZHAO Yong-feng 4, FU Xiao-dong 1, 2, MA Chao 1
doaj   +1 more source

Study on bump-prone property of coal under multi-stage confining pressure variable stress lower limit cyclic loading and unloading

open access: yesMeikuang Anquan, 2023
The study of coal bump-prone property under confining pressure plays a key role in exploring the formation mechanism of coal burst in deep underground mines.
Chuanjiu ZHANG   +3 more
doaj   +1 more source

Cyclic Undrained Triaxial Strength of Sampled Sand Affected by Confining Pressure

open access: yesSoils and Foundations, 1981
The effects of confining pressure on the cyclic undrained triaxial strengths of intact sandy specimens obtained by sand sampling methods were investigated. It was found that the ratio of cyclic deviator stress amplitude to initial confining pressure required to cause a certain value of cyclic axial strain amplitude at a certain number of loading cycle ...
TATSUOKA, FUMIO   +3 more
openaire   +2 more sources

Acoustic Emission Simulation on Coal Specimen Subjected to Cyclic Loading

open access: yesAdvances in Civil Engineering, 2020
The damage and failure state of the loaded coal and rock masses is indirectly reflected by its acoustic emission (AE) characteristics. Therefore, it is of great significance to study the AE evolution of loaded coal and rock masses for the evaluation of ...
Huiqiang Duan, Depeng Ma
doaj   +1 more source

Effect of post-peak cyclic load on mechanics and seepage characteristics of sandstone under different confining pressures

open access: yesMeitan kexue jishu, 2023
The mining disturbance causes the rock mass in a certain range of the coal seam floor to be in a post-peak state. Due to the excavation of adjacent roadways and the mining of coal seams, the post-peak rock mass undergoes a cyclic loading-unloading ...
Peisen ZHANG   +7 more
doaj   +1 more source

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