Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide

Earthquakes or cyclic loadings cause significant changes in the strength characteristics of soil. These changes, especially for sliding zone soil, can lead to catastrophic landslides. Taking into account this characteristic, this paper investigates the effects of prior cyclic loading on the consolid...

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Autores principales:	Qiong Chen, Deshan Cui, Yu Chen, Xianyu Tao, Wei Xiang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/1ee1adb1cb0040b5b02f5077db1bf53e
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spelling	oai:doaj.org-article:1ee1adb1cb0040b5b02f5077db1bf53e2021-11-29T00:56:57ZEffect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide1687-809410.1155/2021/9924995https://doaj.org/article/1ee1adb1cb0040b5b02f5077db1bf53e2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/9924995https://doaj.org/toc/1687-8094Earthquakes or cyclic loadings cause significant changes in the strength characteristics of soil. These changes, especially for sliding zone soil, can lead to catastrophic landslides. Taking into account this characteristic, this paper investigates the effects of prior cyclic loading on the consolidated undrained triaxial compression strength of sliding zone soil with the KTL triaxial automated system. Our experimental results indicate that the prior cyclic loading has a significant effect on the strength behaviour of saturated sliding zone soil. Under different confining pressures, cycle periods, and number of cycles, the samples exhibit the characteristics of strain-hardening. Deviatoric stress under cyclic loading condition is smaller than that with monotonic loading condition under different confining pressures, cycle periods, and number of cycles. As the confining pressure and cycle period increase, the failure stress ratio decreases. The axial strain exhibits a steep rise first and then stays stable under a cycle period of 90 s, while the axial strain shows a linear increase with an increase in the number of cycles under a cycle period of 10 s under confining pressures of 100 kPa and 400 kPa, respectively. The logarithmic relation correlates well with the failure stress ratio in the cyclic loading tests, which preliminary validates the applicability of logarithmic relation for sliding zone soil influenced by prior cyclic loading, providing a theoretical basis and guidance for the further understanding of strength characteristics of sliding zone soil.Qiong ChenDeshan CuiYu ChenXianyu TaoWei XiangHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040ENAdvances in Civil Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Qiong Chen Deshan Cui Yu Chen Xianyu Tao Wei Xiang Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide
description	Earthquakes or cyclic loadings cause significant changes in the strength characteristics of soil. These changes, especially for sliding zone soil, can lead to catastrophic landslides. Taking into account this characteristic, this paper investigates the effects of prior cyclic loading on the consolidated undrained triaxial compression strength of sliding zone soil with the KTL triaxial automated system. Our experimental results indicate that the prior cyclic loading has a significant effect on the strength behaviour of saturated sliding zone soil. Under different confining pressures, cycle periods, and number of cycles, the samples exhibit the characteristics of strain-hardening. Deviatoric stress under cyclic loading condition is smaller than that with monotonic loading condition under different confining pressures, cycle periods, and number of cycles. As the confining pressure and cycle period increase, the failure stress ratio decreases. The axial strain exhibits a steep rise first and then stays stable under a cycle period of 90 s, while the axial strain shows a linear increase with an increase in the number of cycles under a cycle period of 10 s under confining pressures of 100 kPa and 400 kPa, respectively. The logarithmic relation correlates well with the failure stress ratio in the cyclic loading tests, which preliminary validates the applicability of logarithmic relation for sliding zone soil influenced by prior cyclic loading, providing a theoretical basis and guidance for the further understanding of strength characteristics of sliding zone soil.
format	article
author	Qiong Chen Deshan Cui Yu Chen Xianyu Tao Wei Xiang
author_facet	Qiong Chen Deshan Cui Yu Chen Xianyu Tao Wei Xiang
author_sort	Qiong Chen
title	Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide
title_short	Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide
title_full	Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide
title_fullStr	Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide
title_full_unstemmed	Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide
title_sort	effect of prior cyclic loading on triaxial compression strength of sliding zone soil of the huangtupo landslide
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/1ee1adb1cb0040b5b02f5077db1bf53e
work_keys_str_mv	AT qiongchen effectofpriorcyclicloadingontriaxialcompressionstrengthofslidingzonesoilofthehuangtupolandslide AT deshancui effectofpriorcyclicloadingontriaxialcompressionstrengthofslidingzonesoilofthehuangtupolandslide AT yuchen effectofpriorcyclicloadingontriaxialcompressionstrengthofslidingzonesoilofthehuangtupolandslide AT xianyutao effectofpriorcyclicloadingontriaxialcompressionstrengthofslidingzonesoilofthehuangtupolandslide AT weixiang effectofpriorcyclicloadingontriaxialcompressionstrengthofslidingzonesoilofthehuangtupolandslide
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Effect of Prior Cyclic Loading on Triaxial Compression Strength of Sliding Zone Soil of the Huangtupo Landslide

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