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含根量对原状与重塑草根加筋土强度影响的试验研究

王元战, 刘旭菲, 张智凯, 马殿光, 崔衍强

王元战, 刘旭菲, 张智凯, 马殿光, 崔衍强. 含根量对原状与重塑草根加筋土强度影响的试验研究[J]. 岩土工程学报, 2015, 37(8): 1405-1410. DOI: 10.11779/CJGE201508007
引用本文: 王元战, 刘旭菲, 张智凯, 马殿光, 崔衍强. 含根量对原状与重塑草根加筋土强度影响的试验研究[J]. 岩土工程学报, 2015, 37(8): 1405-1410. DOI: 10.11779/CJGE201508007
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WANG Yuan-zhan, LIU Xu-fei, ZHANG Zhi-kai, MA Dian-guang, CUI Yan-qiang. Experimental research on influence of root content on strength of undisturbed and remolded grassroots-reinforced soil[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1405-1410. DOI: 10.11779/CJGE201508007
Citation: WANG Yuan-zhan, LIU Xu-fei, ZHANG Zhi-kai, MA Dian-guang, CUI Yan-qiang. Experimental research on influence of root content on strength of undisturbed and remolded grassroots-reinforced soil[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1405-1410. DOI: 10.11779/CJGE201508007
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含根量对原状与重塑草根加筋土强度影响的试验研究  English Version

  • 1. 天津大学水利工程仿真与安全国家重点实验室,高新船舶与深海开发装备协同创新中心,天津300072;
    2. 中交第四航务工程勘察设计院有限公司,广东 广州510230;
    3. 交通运输部天津水运工程科学研究所,工程泥沙交通行业重点实验室,天津300456;
    4. 交通运输部天津水运工程科学研究所,水工构造物检测、诊断与加固技术交通行业重点实验室,天津300456

基金项目: 国家自然科学基金项目（51279128）; 国家自然科学基金创新研究群体科学基金项目（51321065）; 交通运输部交通建设科技项目（2013328224070）
详细信息
    作者简介:

    王元战(1958- ),男,教授,博士生导师,从事港口海岸与近海结构设计理论和方法、土与结构相互作用、结构振动分析理论和方法等方面的研究工作。E-mail: yzwang@tju.edu.cn。

  • 中图分类号: TU43

Experimental research on influence of root content on strength of undisturbed and remolded grassroots-reinforced soil

  • 1. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, National Key Laboratory of Water Conservancy Engineering Simulation and Security, Tianjin University, Tianjin 300072, China;
    2. CCCC-FHDI Engineering Co., Ltd., Guangzhou 510230, China;
    3. Key Laboratory of Engineering Sediment of Ministry of Transport, Tianjin Research Institute for Water Transport Engineering, Tianjin 300456, China;
    4. Key Laboratory of Harbor and Marine Structure Safety of Ministry of Communication, Tianjin Research Institute for Water Transport Engineering, Tianjin 300456, China

摘要

    摘要
  • 摘要: 用室内三轴试验方法研究了原状和重塑草根加筋土的强度特性,分析含根量对土体强度的影响,并对二者强度的差异进行量化描述。试验结果表明：对于原状草根加筋土,含根量的增加对内摩擦角基本无影响,但可提高土体黏聚力,并且黏聚力先增加再基本保持不变;对于重塑草根加筋土,存在最优含根量使其强度最高,并且该值与围压相关,随围压的增大,该值增加;重塑草根加筋土的含根量是原状土的4~6倍时,二者土体破坏时的主应力差值基本相等。
    Abstract: Laboratory triaxial tests are carried out in order to understand the strength property of undisturbed and remolded grassroots-reinforced soil (UGRS and RGRS). The influence of root content on soil strength is investigated. Moreover, the strength difference between the two soils is quantitatively described by root content. The laboratory test results show that: (1) As to UGRS, the increase of root content has little effect on the internal friction angle, while it can improve the cohesion which increases first and then keeps unchanged; (2) There is an optimal root content in RGRS making soil strength the highest, which increases with the increasing confining pressure; (3) When the root content in RGRS is 4~6 times that in UGRS, the deviator stresses of RGRS and UGRS in the limit equilibrium state are almost equal.
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    • 参考文献(12)
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  • 收稿日期:  2014-09-23
  • 发布日期:  2015-08-24

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