Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading
The deformation and strength characteristics of saturated clay are studied through a cyclic triaxial test of clay in the Wenchuan earthquake area. Specifically, the effects of cyclic stress ratio, initial shear stress, and vibration frequency on the dynamic characteristics of saturated clay are anal...
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2020-01-01
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Series: | Advances in Civil Engineering |
Online Access: | http://dx.doi.org/10.1155/2020/7456596 |
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doaj-e7c8af8f03f14c3ca39589454a78f5062020-11-25T02:10:04ZengHindawi LimitedAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/74565967456596Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic LoadingJian Zhang0Yangguang Sun1Jiuting Cao2Nanjing Vocational Institute of Transport Technology, Nanjing 211188, ChinaGuangdong Province Communications Planning and Design Institute Co., Ltd., Guangzhou 510507, ChinaJiangsu Zhongshe Group Co., Ltd., Wuxi 214072, ChinaThe deformation and strength characteristics of saturated clay are studied through a cyclic triaxial test of clay in the Wenchuan earthquake area. Specifically, the effects of cyclic stress ratio, initial shear stress, and vibration frequency on the dynamic characteristics of saturated clay are analysed. Results show a failure strain in the dynamic strain development of saturated clay. Before the failure strain, the dynamic strain of soil develops slowly. After the failure strain, the soil strain increases sharply and leads to failure. Under the same confining pressure, the failure strain produced by different cyclic stress ratios has a linear relationship with the failure frequency. The dynamic strain development curve of saturated clay can be simplified to failure, transition, and stability types, which are mainly affected by the cyclic stress ratio. Initial shear stress and vibration frequency have significant effects on the deformation and strength characteristics of saturated clay. The larger the initial shear stress or the lower the vibration frequency is, the more sufficient the dynamic strain of soil develops and the fewer the number of cycles required to reach the same dynamic strain. Under the same number of cycles, the larger the initial shear stress or the lower the vibration frequency, the smaller the dynamic stress required to cause soil failure and the lower the dynamic strength of the soil. A turning point exists in the dynamic strength curve of clay. The smaller the initial shear stress or the higher the vibration frequency, the smoother the curve after the turning point and the smaller the tangent slope.http://dx.doi.org/10.1155/2020/7456596 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jian Zhang Yangguang Sun Jiuting Cao |
spellingShingle |
Jian Zhang Yangguang Sun Jiuting Cao Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading Advances in Civil Engineering |
author_facet |
Jian Zhang Yangguang Sun Jiuting Cao |
author_sort |
Jian Zhang |
title |
Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading |
title_short |
Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading |
title_full |
Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading |
title_fullStr |
Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading |
title_full_unstemmed |
Experimental Study on the Deformation and Strength Characteristics of Saturated Clay under Cyclic Loading |
title_sort |
experimental study on the deformation and strength characteristics of saturated clay under cyclic loading |
publisher |
Hindawi Limited |
series |
Advances in Civil Engineering |
issn |
1687-8086 1687-8094 |
publishDate |
2020-01-01 |
description |
The deformation and strength characteristics of saturated clay are studied through a cyclic triaxial test of clay in the Wenchuan earthquake area. Specifically, the effects of cyclic stress ratio, initial shear stress, and vibration frequency on the dynamic characteristics of saturated clay are analysed. Results show a failure strain in the dynamic strain development of saturated clay. Before the failure strain, the dynamic strain of soil develops slowly. After the failure strain, the soil strain increases sharply and leads to failure. Under the same confining pressure, the failure strain produced by different cyclic stress ratios has a linear relationship with the failure frequency. The dynamic strain development curve of saturated clay can be simplified to failure, transition, and stability types, which are mainly affected by the cyclic stress ratio. Initial shear stress and vibration frequency have significant effects on the deformation and strength characteristics of saturated clay. The larger the initial shear stress or the lower the vibration frequency is, the more sufficient the dynamic strain of soil develops and the fewer the number of cycles required to reach the same dynamic strain. Under the same number of cycles, the larger the initial shear stress or the lower the vibration frequency, the smaller the dynamic stress required to cause soil failure and the lower the dynamic strength of the soil. A turning point exists in the dynamic strength curve of clay. The smaller the initial shear stress or the higher the vibration frequency, the smoother the curve after the turning point and the smaller the tangent slope. |
url |
http://dx.doi.org/10.1155/2020/7456596 |
work_keys_str_mv |
AT jianzhang experimentalstudyonthedeformationandstrengthcharacteristicsofsaturatedclayundercyclicloading AT yangguangsun experimentalstudyonthedeformationandstrengthcharacteristicsofsaturatedclayundercyclicloading AT jiutingcao experimentalstudyonthedeformationandstrengthcharacteristicsofsaturatedclayundercyclicloading |
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