ORIGINAL RESEARCH article
Front. Mar. Sci.
Sec. Coastal Ocean Processes
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1648806
Experimental study on the dynamic shear modulus and damping ratio of structural soft soils from the Yangtze River floodplain considering consolidation degree
Provisionally accepted
- 1Huarun New Energy Investment Co.,Ltd., Shenzhen, China
- 2PowerChina Huadong Engineering Corporation Limited, Hangzhou, China
- 3Nanjing Tech University, Nanjing, China
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To explore the characteristics of the dynamic shear modulus of structural soft soil, undisturbed structural soft from the floodplain of the Yangtze River in Nanjing was subjected to strain-controlled cyclic triaxial tests to investigate how the initial effective confining pressure (σʹm), consolidation ratio (kc), and degree of consolidation (U) influence the maximum dynamic shear modulus Gmax and dynamic shear modulus (G) and damping ratio (λ). The results show that for this soil, G decreases with increasing shear strain amplitude (γ), and for a given γ, G increases with increasing σʹm, kc, and U. Compared with soil from the Yangtze estuary, kc has a greater effect on Gmax of the floodplain structural soft soil. Finally, a modified Martin-Davidenkov model is proposed for predicting G/Gmax of floodplain structural soft soil under different σʹm, kc, and U.
Keywords: Structural soft soil, Dynamic shear modulus, Damping ratio, Initial static stress, degree of consolidation
Received: 17 Jun 2025; Accepted: 17 Jul 2025.
Copyright: © 2025 Wang, Lv, Xiao and Qi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Xing Xiao, Nanjing Tech University, Nanjing, China
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