| 不同初始状态下压实黄土浸水后的变形特性研究 |
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| 引用本文： | 韩哲,高游,熊勇林,张俊然. 不同初始状态下压实黄土浸水后的变形特性研究[J]. 宁波大学学报(理工版), 2022, 0(3): 19-24 |
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| 作者姓名： | 韩哲 高游 熊勇林 张俊然 |
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| 作者单位： | 1.宁波大学 土木与环境工程学院, 浙江 宁波 315211; 2.华北水利水电大学 河南省岩土力学与结构工程重点实验室, 河南 郑州 450045 |
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| 基金项目： | 浙江省自然科学基金（LY19E080012）；;河南省高等学校重点科研项目（21A410002）； |
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| 摘 要： | 以压实黄土为研究对象,通过一系列浸水后的压缩变形试验研究了不同初始含水率、初始干密度和竖向压力对非饱和压实黄土浸水后变形特性的影响.结果表明:非饱和压实黄土在相同竖向压力条件下,浸水压缩稳定后的状态与初始状态无关;压实黄土浸水后产生压缩变形的起始点压力值主要受试样初始干密度影响,而终止点压力值主要受初始含水率影响.其次...
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| 关 键 词： | 非饱和土 浸水 变形特性 压实黄土 |
Deformation behavior of compacted loess with different initial states after wetting |
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| HAN Zhe1,GAO You1,XIONG Yonglin1,ZHANG Junran2. Deformation behavior of compacted loess with different initial states after wetting[J]. Journal of Ningbo University(Natural Science and Engineering Edition), 2022, 0(3): 19-24 |
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| Authors: | HAN Zhe1 GAO You1 XIONG Yonglin1 ZHANG Junran2 |
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| Affiliation: | 1.School of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China; 2.Henan Province Key Laboratory of Rock and Soil Mechanics and Structural Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China |
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| Abstract: | In this paper, a series of wetting tests on unsaturated compacted loess were performed to investigate the deformation behavior after wetting. The influences of different initial water contents, initial dry densities and vertical pressures were studied. The results indicate that under the same vertical pressure, the state of unsaturated compacted loess after wetting is independent of the initial states. The vertical pressure of the initial point after wetting is mainly affected by the initial dry density, while the vertical pressure of the termination point is mainly affected by the initial water content. According to the relationship of the unsaturated compression curves with different initial states, a yield stress equation considering the influence of initial water content and void ratio is proposed. Finally, based on the deformation behavior of unsaturated compacted loess before and after wetting, a simple method that can quantitatively describe the vertical pressure values of the initial point and the termination point is proposed. |
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| Keywords: | unsaturated soil wetting deformation behavior compacted loess |
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