Impacts of Drained Conditions and Degree of Reconsolidation on Postcyclic Mechanical Behaviors of Laterite Clay
Publication: International Journal of Geomechanics
Volume 23, Issue 3
Abstract
The mechanical behaviors of subgrade soils will change after cyclic loading, resulting in a modification of foundation bearing capacity and the development of additional settlement. Recognizing this, cyclic triaxial tests were conducted to remolded laterite clay, and reconsolidation was allowed. During the process, the cyclic loading was applied under undrained and partially drained conditions, respectively. Results show that the variations of both postcyclic undrained strength and elastic modulus versus degree of reconsolidation are different: the postcyclic elastic modulus increases with an increase of the degree of reconsolidation, while the undrained strength decreases a little under the condition of the large degree of reconsolidation. Furthermore, there are specific degrees of reconsolidation, making the postcyclic undrained strength and elastic modulus equal to the corresponding test results of the specimen without reconsolidation. Moreover, the greater the number of cycles, the larger the elastic modulus of the specimens with full reconsolidation, and the lower the elastic modulus of the specimens without reconsolidation. The undrained strengths of the specimens with full reconsolidation are all higher than those of the specimens without cyclic loading, whereas those of the specimens without reconsolidation are all lower. In addition, both postcyclic undrained strength and elastic modulus between cyclic loading under undrained and partially drained conditions are compared: the elastic moduli of the specimens under partially drained conditions are greater than those obtained under undrained conditions, while the undrained strengths obtained under partially drained conditions are equal to that under undrained conditions at a certain number of cycles.
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Acknowledgments
The research was supported by National Natural Science Foundation of China (No. 51909259, 52079135) and the Youth Innovation Promotion Association CAS (No. 2021325).
Notation
The following symbols are used in this paper:
- Eo,cy
- postcyclic elastic modulus for specimens with cyclic-loading history (MPa);
- Eo,NC
- elastic modulus for specimens without cyclic-loading history (MPa);
- Es,cy
- postcyclic secant modulus for specimens with cyclic-loading history (MPa);
- N
- number of cycles;
- q
- deviator stress during postcyclic shearing process (kPa);
- qampl
- amplitude of the cyclic deviator stress (kPa);
- Su,cy
- postcyclic undrained strength for specimens with cyclic-loading history (kPa);
- Su,NC
- undrained strength for specimens without cyclic-loading history (kPa);
- Ur
- degree of reconsolidation (%);
- Δucy
- excess pore water pressure induced during the cyclic-loading process (kPa);
- Δure
- dissipated excess pore water pressure during the reconsolidation process (kPa); and
- ɛ
- axial strain induced during postcyclic shearing process (%).
References
Andersen, K. H., A. Kleven, and D. Heien. 1988. “Cyclic soil data for design of gravity structures.” J. Geotech. Eng. 114 (5): 517–539. https://doi.org/10.1061/(ASCE)0733-9410(1988)114:5(517).
Asaoka, A., M. Nakano, and M. Matsuo. 1992. “Prediction of the partially drained behavior of soft clays under embankment loading.” Soils Found. 32 (1): 41–58. https://doi.org/10.3208/sandf1972.32.41.
Cai, Y., C. Gu, J. Wang, C. H. Juang, C. Xu, and X. Hu. 2013. “One-way cyclic triaxial behavior of saturated clay: Comparison between constant and variable confining pressure.” J. Geotech. Geoenviron. Eng. 139 (5): 797–809. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000760.
Chen, C., Z. Zhou, X. Zhang, and G. Xu. 2018a. “Behavior of amorphous peaty soil under long-term cyclic loading.” Int. J. Geomech. 18 (9): 04018115. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001254.
Chen, W.-B., J.-H. Yin, W.-Q. Feng, L. Borana, and R.-P. Chen. 2018b. “Accumulated permanent axial strain of a subgrade fill under cyclic high-speed railway loading.” Int. J. Geomech. 18 (5): 04018018. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001119.
Gu, C., J. Wang, Y. Cai, L. Sun, P. Wang, and Q. Dong. 2016. “Deformation characteristics of overconsolidated clay sheared under constant and variable confining pressure.” Soils Found. 56 (3): 427–439. https://doi.org/10.1016/j.sandf.2016.04.009.
Guo, L., L. Liu, J. Wang, H. Jin, and Y. Fang. 2020. “Long term cyclic behavior of saturated soft clay under different drainage conditions.” Soil Dyn. Earthquake Eng. 139: 106362. https://doi.org/10.1016/j.soildyn.2020.106362.
Huang, B., H. Ding, Y. M. Chen, and X. C. Bian. 2010. “Experimental study of undrained strength property of saturated silty clay after traffic load.” Chin. J. Rock Mech. Eng. 29 (S2): 3986–3993.
Huang, B., H. D. Shi, D. S. Ling, and Y. M. Chen. 2012. “Comparisons of static and dynamic behaviors between two silty clays by test.” Rock Soil Mech. 33 (3): 665–673.
Huang, J., J. Chen, W. Ke, Y. Zhong, Y. Lu, and S. Yi. 2021. “Postcyclic mechanical behaviors of laterite clay with different cyclic confining pressures and degrees of reconsolidation.” Soil Dyn. Earthquake Eng. 151: 106986. https://doi.org/10.1016/j.soildyn.2021.106986.
Huang, J., J. Chen, Y. Lu, S. Yi, H. Cheng, and L. Cui. 2020. “Deformation behaviors and dynamic backbone curve model of saturated soft clay under bidirectional cyclic loading.” Int. J. Geomech. 20 (4): 04020016. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001628.
Huo, H. F. 2012. “Research on the mechanical property of saturated silty clay under cyclic loading.” Ph.D. thesis, School of Civil Engineering, Tianjin Univ.
Hyde, A. F., T. Higuchi, and K. Yasuhara. 2007. “Postcyclic recompression, stiffness, and consolidated cyclic strength of silt.” J. Geotech. Geoenviron. Eng. 133 (4): 416–423. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:4(416).
Hyodo, M., A. F. L. Hyde, Y. Yamamoto, and T. Fujii. 1999. “Cyclic shear strength of undisturbed and remoulded marine clays.” Soils Found. 39 (2): 45–58. https://doi.org/10.3208/sandf.39.2_45.
Hyodo, M., K. Yasuhara, and K. Hirao. 1992. “Prediction of clay behavior in undrained and partially drained cyclic triaxial tests.” Soils Found. 32 (4): 117–127. https://doi.org/10.3208/sandf1972.32.4_117.
Kaya, Z., and A. Erken. 2015. “Cyclic and postcyclic monotonic behavior of Adapazari soils.” Soil Dyn. Earthquake Eng. 77: 83–96. https://doi.org/10.1016/j.soildyn.2015.05.003.
Lei, H. Y., M. Liu, S. X. Feng, J. J. Liu, and M. J. Jiang. 2020. “Cyclic behavior of Tianjin soft clay under intermittent combined-frequency cyclic loading.” Int. J. Geomech. 20 (10): 04020186. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001805.
Lu, Y., J. Chen, J. Huang, L. Feng, S. Yu, J. Li, and C. Ma. 2021. “Postcyclic mechanical behaviors of undisturbed soft clay with different degrees of reconsolidation.” Appl. Sci. 11: 7612. https://doi.org/10.3390/app11167612.
Matsui, T., M. A. Bahr, and N. Abe. 1992. “Estimation of shear characteristics degradation and stress-strain relationship of saturated clays after cyclic loading.” Soils Found. 32 (1): 161–172. https://doi.org/10.3208/sandf1972.32.161.
Matsui, T., H. Ohara, and T. Ito. 1980. “Cyclic stress–strain history and shear characteristics of clays.” J. Geotech. Eng. 106 (10): 1101–1120.
Mohammed, A. A. K., and S. Jeong. 2021. “Behavior of weathered soil under combined undrained cyclic-monotonic loading.” Int. J. Geomech. 21 (4): 04021026. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001969.
MWR (Ministry of Water Resources). 2019. Standard for geotechnical testing method. GB/T 50123-2019. Beijing: MWR.
Pan, X., J. Tong, L. Guo, T. Wu, Z. Yuan, and H. Sun. 2022. “Effects of principal stress rotation on deformation behaviour of clay under partially drained and undrained conditions.” Soil Dyn. Earthquake Eng. 154: 107159. https://doi.org/10.1016/j.soildyn.2022.107159.
Sakai, A., L. Samang, and N. Miura. 2003. “Partially-drained cyclic behavior and its application to the settlement of a low embankment road on silty-clay.” Soils Found. 43 (1): 33–46. https://doi.org/10.3208/sandf.43.33.
Simomsen, E., and U. Isacsson. 2001. “Soil behavior during freezing and thawing using variable and constant confining pressure triaxial tests.” Can. Geotech. J. 38: 863–875. https://doi.org/10.1139/t01-007.
Soroush, A., and J. H. Soltani. 2009. “Pre- and postcyclic behavior of mixed clayey soils.” Can. Geotech. J. 46: 115–128. https://doi.org/10.1139/T08-109.
Sun, L., Y.-q. Cai, C. Gu, J. Wang, and L. Guo. 2015. “Cyclic deformation behaviour of natural K0-consolidated soft clay under different stress paths.” J. Cent. South Univ. 22: 4828–4836. https://doi.org/10.1007/s11771-015-3034-4.
Wang, S., R. Luna, and J. Yang. 2013. “Postcyclic behavior of low-plasticity silt with limited excess pore pressures.” Soil Dyn. Earthquake Eng. 54: 39–46. https://doi.org/10.1016/j.soildyn.2013.07.016.
Wang, S., R. Luna, and S. Onyejekwe. 2015a. “Effect of initial consolidation condition on postcyclic undrained monotonic shear behavior of Mississippi river valley silt.” J. Geotech. Geoenviron. Eng. 142 (2): 04015075. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001401.
Wang, S., R. Luna, and H. Zhao. 2015b. “Cyclic and postcyclic shear behavior of low-plasticity silt with varying clay content.” Soil Dyn. Earthquake Eng. 75: 112–120. https://doi.org/10.1016/j.soildyn.2015.03.015.
Wang, Y., J. Lei, X. Gong, Y. Wang, and P. Yang. 2018. “Postcyclic undrained shear behavior of marine silty clay under various loading conditions.” Ocean Eng. 158: 152–161. https://doi.org/10.1016/j.oceaneng.2018.03.081.
Wang, Y., J. Lei, Y. Wang, and S. Li. 2019. “Postcyclic shear behavior of reconstituted marine silty clay with different degrees of reconsolidation.” Soil Dyn. Earthquake Eng. 116: 530–540. https://doi.org/10.1016/j.soildyn.2018.10.042.
Wang, Y., S. Zhang, S. Yin, X. Liu, and X. Zhang. 2020. “Accumulated plastic strain behavior of granite residual soil under cycle loading.” Int. J. Geomech. 20 (11): 04020205. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001850.
Wijewickreme, D., and M. V. Sanin. 2010. “Postcyclic reconsolidation strains in low-plastic Fraser river silt due to dissipation of excess pore-water pressures.” J. Geotech. Geoenviron. Eng. 136 (10): 1347–1357. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000349.
Yasuhara, K. 1994. “Postcyclic undrained strength for cohesive soils.” J. Geotech. Eng. 120 (11): 1961–1979. https://doi.org/10.1061/(ASCE)0733-9410(1994)120:11(1961).
Yasuhara, K., K. Hirao, and A. F. L. Hyde. 1992. “Effects of cyclic loading on undrained strength and compressibility of clay.” Soils Found. 32 (1): 100–116. https://doi.org/10.3208/sandf1972.32.100.
Yasuhara, K., and A. F. L. Hyde. 1997. “Method for estimating postcyclic undrained secant modulus of clays.” J. Geotech. Geoenviron. Eng. 123 (3): 204–211. https://doi.org/10.1061/(ASCE)1090-0241(1997)123:3(204).
Yasuhara, K., S. Murakami, B.-W. Song, S. Yokokawa, and A. F. L. Hyde. 2003. “Postcyclic degradation of strength and stiffness for low plasticity silt.” J. Geotech. Geoenviron. Eng. 129 (8): 756–769. https://doi.org/10.1061/(ASCE)1090-0241(2003)129:8(756).
Zheng, G., H. F. Huo, and H. Y. Lei. 2012. “Undrained strength characteristics of saturated undisturbed and remolded silty clay after cyclic loading.” Chin. J. Geotech. Eng. 34 (3): 400–408.
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Published In
International Journal of Geomechanics
Volume 23 • Issue 3 • March 2023
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© 2023 American Society of Civil Engineers.
History
Received: Jun 18, 2022
Accepted: Nov 21, 2022
Published online: Jan 10, 2023
Published in print: Mar 1, 2023
Discussion open until: Jun 10, 2023
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