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Volume 15
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10.3390/buildings15162882
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading

by
Juehao Huang
1,
Chao Meng
2,
Yongqiang Zhou
1,
Jian Chen
1,
Xiaodong Fu
1 and
Mingyi Wang
2,*
1
State Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
2
School of Civil Engineering, Chang’an University, Xi’an 710064, China
*
Author to whom correspondence should be addressed.
Buildings 2025, 15(16), 2882; https://doi.org/10.3390/buildings15162882
Submission received: 2 July 2025 / Revised: 10 August 2025 / Accepted: 13 August 2025 / Published: 14 August 2025
(This article belongs to the Special Issue Geomechanics and Geotechnical Engineering Problems in the Design and Construction of Underground Buildings—2nd Edition)
Versions Notes

Abstract

The damping ratio is essential to conducting dynamic analysis for underground engineering under traffic loading. Variations in the damping ratio are usually studied using cyclic triaxial tests with continuous cyclic loading; however, intermittent loading is observed under traffic loading. Moreover, both the deviator stress and confining pressure vary cyclically. So far, the development of the damping ratio under intermittent cyclic loading with cyclic confining pressure has rarely been studied. Thus, cyclic triaxial tests with continuous and intermittent cyclic loading were conducted. Unlike continuous loading, where the normalized damping ratio progressively decreases, the corresponding variations under intermittent cyclic loading showed a sudden increase in the initial damping ratio at each restart. Critically, the cyclic confining pressure significantly reduced the normalized damping ratio, with greater attenuation under intermittent loading at higher cyclic confining pressures. In addition, an empirical model incorporating these effects for the damping ratio under intermittent cyclic loading was developed.
Keywords: cyclic triaxial test; intermittent cyclic loading; damping ratio; cyclic confining pressure cyclic triaxial test; intermittent cyclic loading; damping ratio; cyclic confining pressure

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MDPI and ACS Style

Huang, J.; Meng, C.; Zhou, Y.; Chen, J.; Fu, X.; Wang, M. Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading. Buildings 2025, 15, 2882. https://doi.org/10.3390/buildings15162882

AMA Style

Huang J, Meng C, Zhou Y, Chen J, Fu X, Wang M. Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading. Buildings. 2025; 15(16):2882. https://doi.org/10.3390/buildings15162882

Chicago/Turabian Style

Huang, Juehao, Chao Meng, Yongqiang Zhou, Jian Chen, Xiaodong Fu, and Mingyi Wang. 2025. "Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading" Buildings 15, no. 16: 2882. https://doi.org/10.3390/buildings15162882

APA Style

Huang, J., Meng, C., Zhou, Y., Chen, J., Fu, X., & Wang, M. (2025). Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading. Buildings, 15(16), 2882. https://doi.org/10.3390/buildings15162882

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