Cyclic response of <i>K</i><sub>0</sub>-consolidated stiff clay under traffic loading

LIU Xu-ming; PAN Kun; YANG Zhong-xuan; CAI Yuan-qiang

doi:10.11779/CJGE2020S1009

Volume 42 Issue S1

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Chinese Journal of Geotechnical Engineering > 2020 > 42(S1): 45-49. > DOI: 10.11779/CJGE2020S1009

LIU Xu-ming, PAN Kun, YANG Zhong-xuan, CAI Yuan-qiang. Cyclic response of K₀-consolidated stiff clay under traffic loading[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S1): 45-49. DOI: 10.11779/CJGE2020S1009

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Cyclic response of K₀-consolidated stiff clay under traffic loading

1.
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
2.
College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China

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Received Date: May 05, 2020
Available Online: December 07, 2022

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Abstract

Abstract

To study the effects of cyclic stress ratio and principle stress axis rotation on the undrained cyclic response characteristics of K₀-consolidated stiff clay whose K₀ is larger than 1, a series of traffic loading tests with a large number of cycles are conducted on the intact Gault and Kimmeridge clays by using the dynamic triaxial test system (DYNTTS) and the hollow cylinder apparatus (HCA). The test results indicate that the stiff clay has strong brittleness compared with the soft clay. With the increasing cyclic stress ratio, the cyclic deformation responses can be categorized into stable, metastable, and unstable patterns. Under the continuous rotation of the principle stress axis, the axial strain of the stiff clay is gradually accumulated at the extension side, and its resilient modulus is rapidly degraded.
- stiff clay,
- traffic loading,
- accumulative strain,
- deformation pattern,
- resilient modulus

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Cyclic response of K₀-consolidated stiff clay under traffic loading