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Corresponding Author

刘耀星, 男, 硕士, 助理研究员. E-mail: 1379987538@qq.com

Abstract

To effectively deal with waste soil and reduce environmental pollution,this paper took a road engineering project in Shaoxing as the research object and conducted a cyclic triaxial incremental loading test on the undisturbed lime soil under undrained conditions to study the effects of confining pressure,cyclic stress ratio,and water immersion on its performance.The results show that when the cyclic stress ratio increases from 1 to 4,the cumulative strain and resilient strain increase rapidly in the initial loading stage,showing a trend of “stepwise” increase.The cumulative strain produced at a cyclic stress ratio of 2 is about twice that at the cyclic stress ratio of 1.The resilient modulus has a slight increase first and then quickly tends to stabilize,which indicates that the cyclic stress ratio has a limited effect on it.The influence of confining pressure on the axial cumulative strain is little.The axial cumulative strain varies slightly with the number of cycles,rapidly increasing in the initial stage and then stabilizing,which reflects the good plastic deformation resistance of lime soil.Under the same cyclic stress ratio,increasing the confining pressure significantly increases the resilient modulus.For example,the resilient modulus increases significantly at the cyclic stress ratio of 1 when the confining pressure is increased from 20 kPa to 40 kPa.The influence of confining pressure on the resilient modulus is about 2.89 times that of the cyclic stress ratio.After water immersion for 24 hours,the total and cumulative strains in the axial direction increase significantly,and the growth is more prominent at 20 kPa confining pressure.The total strain first increases and then decreases with confining pressure,and the resilient modulus after water immersion is more influenced by the cyclic stress ratio.Based on this,a prediction model is proposed for the resilient modulus of the undisturbed lime-stabilized soil before and after water immersion,providing a reference for the solidification of soft soil foundations under complex traffic loads.

Publication Date

12-24-2025

DOI

10.14048/j.issn.1671-2579.2025.06.010

First Page

85

Last Page

93

Submission Date

December 2025

Reference

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