兰州马兰、离石压实黄土抗剪强度影响因素探讨

贾亮; 朱彦鹏; 朱鋆川

doi:10.11779/CJGE2014S2020

兰州马兰、离石压实黄土抗剪强度影响因素探讨 English Version

贾亮^{1, 2},
朱彦鹏^{1, 2},
朱鋆川^{1, 2}

1. 兰州理工大学土木工程学院,甘肃兰州 730050;
2. 西部土木工程防灾减灾教育部工程研究中心,甘肃兰州 730050

基金项目: 甘肃省科技厅重大专项项目（2013GS07716）; 甘肃省自然科学基金项目（1308RJYA023）; 兰州理工大学博士科研基金项目

详细信息

作者简介:
贾亮(1978- ),男,副教授,主要从事路基工程方面的教学和科研方面工作。E-mail: jialiang1949@163.com。

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- 文章访问数: 415
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出版历程
- 收稿日期: 2014-07-27
- 发布日期: 2014-07-27

Influencing factors for shear strength of Malan and Lishi compacted loess in Lanzhou

JIA Liang^{1, 2},
ZHU Yan-peng^{1, 2},
ZHU Jun-chuan^{1, 2}

1. College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. Western Center of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou 730050, China

摘要

摘要: 抗剪强度是压实黄土的重要力学指标,在不同压实和含水状态下,土体的抗剪强度存在明显差异。对兰州青白石马兰、离石压实黄土进行了直剪试验,得到不同压实度和含水率下的黏聚力和内摩擦角,探讨了含水率和压实度对压实黄土抗剪强度的影响。结果表明：黏聚力随压实度的增大而增大,且离石黄土增大幅度大于马兰黄土;含水率小于最佳含水率时黏聚力随含水率的增大略有增大,当含水率大于最佳含水率后黏聚力随含水率的增大反而急剧减小;离石黄土和马兰黄土内摩擦角均随压实度增大而增大、随含水率增大略有减小。
- 压实黄土 /
- 压实度 /
- 含水率 /
- 黏聚力 /
- 内摩擦角
Abstract: The shear strength is the most important mechanical index of loess, which strongly depends on the degree of compaction and moisture content. To investigate the performance of Malan and Lishi loess, direct shear tests are conducted on the samples taken from undisturbed loess site in Qingbaishi, Lanzhou. The shear strength indexes including the cohesion and internal friction angle under different degrees of compaction and moisture contents are obtained. The effects of compaction and moisture content of Lishi and Malan compacted loess are studied. The results show that the cohesion increase with the increase of compaction, and that of Lishi loess has greater increase than that of Malan loess. The cohesion increases slightly with the increase of moisture content when it is less than optimum water, while the cohesion decreases sharply with the increase of moisture content when it is greater than the optimum moisture content. The internal friction angle increases with the increase of compaction and slightly decreases with the increase of water content of compacted Lishi and Malan loess.
- compacted loess /
- degree of compaction /
- water content /
- cohesion /
- internal friction angle

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参考文献(10)

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文章访问数: 415
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PDF下载量: 328
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兰州马兰、离石压实黄土抗剪强度影响因素探讨 English Version

作者简介: 贾 亮(1978- ),男,副教授,主要从事路基工程方面的教学和科研方面工作。E-mail: jialiang1949@163.com。

计量

出版历程

Influencing factors for shear strength of Malan and Lishi compacted loess in Lanzhou

计量

出版历程

目录

作者简介:
贾亮(1978- ),男,副教授,主要从事路基工程方面的教学和科研方面工作。E-mail: jialiang1949@163.com。