EXPERIMENTAL STUDY OF DYNAMIC STRENGTH CHARACTERISTICS FOR RED SANDSTONE WEATHERED SOIL UNDER CYCLIC LOADING

XIAO Hao; WEN Shujie; SUN Zili; YAO Wei

doi:10.13204/j.gyjz202004009

Volume 50 Issue 4

Jun. 2020

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XIAO Hao, WEN Shujie, SUN Zili, YAO Wei. EXPERIMENTAL STUDY OF DYNAMIC STRENGTH CHARACTERISTICS FOR RED SANDSTONE WEATHERED SOIL UNDER CYCLIC LOADING[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(4): 49-53. doi: 10.13204/j.gyjz202004009

Citation:

XIAO Hao, WEN Shujie, SUN Zili, YAO Wei. EXPERIMENTAL STUDY OF DYNAMIC STRENGTH CHARACTERISTICS FOR RED SANDSTONE WEATHERED SOIL UNDER CYCLIC LOADING[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(4): 49-53. doi: 10.13204/j.gyjz202004009

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EXPERIMENTAL STUDY OF DYNAMIC STRENGTH CHARACTERISTICS FOR RED SANDSTONE WEATHERED SOIL UNDER CYCLIC LOADING

doi: 10.13204/j.gyjz202004009

XIAO Hao¹,
WEN Shujie^{1,2
,
,},
SUN Zili¹,
YAO Wei¹

1. College of Architecture and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. Jiangxi Provincial Key Laboratory of Environmental Geotechnical Engineering and Disaster Control, Ganzhou 341000, China

Received Date: 2019-07-23

Abstract

Abstract

In order to study the influence of different confining pressure and consolidation stress ratio on the dynamic strength of red sandstone weathered soil, a series of consolidated undrained triaxial tests were carried out by GDS dynamic triaxial test system under uniaxial loading. The results showed that:the deformation development law of red sandstone weathered soil under cyclic loading was quite different between different consolidation conditions. Under the condition of isotropic consolidation, the increase of confining pressure was helpful to the improvement of dynamic strength.Due to the disintegration and fracturing of red sandstone weathered soil and the shear action of consolidating deviatoric static stress, the dynamic strength of weathered soil under the condition of anisotropic consolidation was less than that under the condition of isotropic consolidation. The effect of different confining pressures on the dynamic stress ratio and vibration frequencies of red sandstone weathered soils were not significant, and the specimens were destroyed within 1 000 cycles. Finally, according to the selected failure criteria, the corresponding dynamic strength curve and dynamic shear strength index were obtained.
- dynamic strength,
- dynamic triaxial,
- red sandstone weathered soil,
- consolidation condition,
- cyclic load

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References(17)

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