Electrical resistivity evolution of compacted silty clay under wetting-drying cycles sequentially coupled with dynamic loads

HU Zhi; AI Pin-bo; LI Zhi-chao; MA Qiang; LI Li-hua

doi:10.16285/j.rsm.2021.0443

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Electrical resistivity evolution of compacted silty clay under wetting-drying cycles sequentially coupled with dynamic loads

更新时间：2026-06-25

- Electrical resistivity evolution of compacted silty clay under wetting-drying cycles sequentially coupled with dynamic loads
- Vol. 42, Issue 10, Pages: 2722-2732(2021)
- 作者机构：
  
  1. 湖北工业大学土木建筑与环境学院,湖北,武汉,430068
  2. 浙江省交通运输科学研究院浙江省道桥检测与养护技术研究重点实验室,浙江,杭州,310023
  3. 中建三局第一建设工程有限责任公司,湖北,武汉,430040
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2021.0443
  CLC： U416.1
- Online First：20 October 2021，
  
  Published：2021
- 稿件说明：
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HU Zhi, AI Pin-bo, LI Zhi-chao, et al. Electrical resistivity evolution of compacted silty clay under wetting-drying cycles sequentially coupled with dynamic loads[J]. 2021, 42(10): 2722-2732.
DOI：

HU Zhi, AI Pin-bo, LI Zhi-chao, et al. Electrical resistivity evolution of compacted silty clay under wetting-drying cycles sequentially coupled with dynamic loads[J]. 2021, 42(10): 2722-2732. DOI： 10.16285/j.rsm.2021.0443.

摘要

路基土体在干湿循环、动荷载等多因素耦合作用下的性能演化规律对于路基安全稳定至关重要。采用交流二极法，对经历不同干湿循环、动荷载条件的压实粉质黏土试样开展了电阻率测试，研究了干湿循环?动荷载贯序耦合作用对试样电阻率的影响规律，建立了基于电阻率的试样动力性能定量表征数学关系，最后探讨了电阻率法用于压实土体状态评价的有效性。试验结果表明：压实土试样在干湿循环?动荷载耦合作用下，经历干湿循环次数越多、干湿循环幅度越大，试样电阻率下降幅度越大，但动荷载作用引起的下降幅度逐渐降低。该研究结果可为利用电阻率法评价干湿循环?动荷载耦合作用下路基土体状态提供一定参考。

Abstract

The performance evolution of subgrade soil under the coupling effect of wetting-drying cycle and dynamic load is very important for the safety and stability of the subgrade. For this purpose

a series of electrical resistivity tests was carried out on the compacted silty clay samples subjected to different wetting-drying cycles and dynamic loads by using AC two-electrode method. Firstly

the effect of wetting-drying cycles sequentially coupled with dynamic loads on the electrical resistivity of samples was investigated. Then

a mathematical relationship was established to quantitatively characterize the dynamic behaviors of samples based on electrical resistivity. Finally

the effectiveness of the electrical resistivity method in evaluating the state of compacted soil was discussed. Results showed that under the action of wetting-drying cycles coupled with dynamic loads

the electrical resistivity of the sample decreased greatly with the increase of the number of wetting-drying cycles or the amplitude of wetting-drying cycle

but the reduction of the electrical resistivity of samples only caused by dynamic load decreased gradually. The test results can provide some reference for the evaluation of the state of subgrade soil under wetting-drying cycles sequentially coupled with dynamic loads by using electrical resistivity method.

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