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粉煤灰掺入量对改性黄土动本构关系的影响

王峻, 王谦, 王平, 钟秀梅, 柴少峰

王峻, 王谦, 王平, 钟秀梅, 柴少峰. 粉煤灰掺入量对改性黄土动本构关系的影响[J]. 岩土工程学报, 2013, 35(zk1): 156-160.
引用本文: 王峻, 王谦, 王平, 钟秀梅, 柴少峰. 粉煤灰掺入量对改性黄土动本构关系的影响[J]. 岩土工程学报, 2013, 35(zk1): 156-160.
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WANG Jun, WANG Qian, WANG Ping, ZHONG Xiu-mei, CHAI Shao-feng. Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 156-160.
Citation: WANG Jun, WANG Qian, WANG Ping, ZHONG Xiu-mei, CHAI Shao-feng. Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 156-160.
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粉煤灰掺入量对改性黄土动本构关系的影响  English Version

  • 1. 中国地震局兰州地震研究所，甘肃 兰州 730000；2. 中国地震局黄土地震工程重点实验室，甘肃 兰州 730000；3. 甘肃省岩土防灾工程技术研究中心，甘肃 兰州 730000

基金项目: 甘肃省地震局地震科技发展基金项目（2012S01）；国家自然科学基金项目（50978239）；中国地震局地震预测研究所基本科研业务专项项目（2012IESLZ07）
详细信息
    作者简介:

    王 峻(1957- )，男，河南汤阴人，高级工程师，主要从事工程地震和黄土动力学研究工作。E-mail: wangjunlz@163.com。

  • 中图分类号: TU411.8

Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess

  • 1. Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China; 2. Key Laboratory of Loess Earthquake Engineering, CEA, Lanzhou 730000, China; 3. Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou 730000, China

摘要

    摘要
  • 摘要: 通过重塑非饱和试件的动三轴试验，开展了粉煤灰改性黄土的动力特性研究。探讨了动荷载作用下粉煤灰改性黄土的动应力-动应变关系，考察了粉煤灰掺入量对改性黄土动本构关系、动弹性模量和阻尼比的影响。研究结果表明，对应于不同粉煤灰掺入量的改性黄土其动本构关系均服从双曲线模型，但试验参数a、b均随粉煤灰掺入量的增大而减小。动弹性模量随着粉煤灰掺入量的增加而增加，而阻尼比明显减小。粉煤灰改性黄土的最佳粉煤灰含量在15%～20%之间。
    Abstract: Based on the dynamic triaxial tests on disturbed unsaturated samples, a study on the dynamic characteristics of modified fly ash loess is carried out. The dynamic stress-strain relationship of fly ash loess under loading function is discussed. The influence of adding amount of fly ash on the dynamic constitutive relationship, dynamic modulus of elasticity and damping ratio of the modified loess is analyzed. The results show that the dynamic constitutive relationship of the modified loess with different adding amounts of fly ash obeys the hyperbolic equation. The test constants aand bdecrease with the increase of the adding amount of fly ash. The dynamic modulus of elasticity increases with the increase of fly ash amount, but the damping ratio noticeably reduces. The optimal content of fly ash of the fly ash-modified loess is 15%~20%.
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出版历程
  • 收稿日期:  2013-03-01
  • 发布日期:  2013-07-18

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