长江科学院院报 ›› 2014, Vol. 31 ›› Issue (5): 62-67.DOI: 10.3969/j.issn.1001-5485.2014.05.013

• 岩土工程 • 上一篇    下一篇

不同掺剂对水泥土动力特性的影响

张鹏1,朱珍德1,王军2,王海洋3   

  1. 1.河海大学 岩土工程研究所,南京 210098;
    2.温州大学 建筑与土木工程学院,浙江 温州 325000;
    3.东营市水利灌溉管理处,山东 东营 257091
  • 收稿日期:2013-06-28 修回日期:2014-05-12 出版日期:2014-05-12 发布日期:2014-05-12
  • 作者简介:张 鹏(1989-),男,山东潍坊人,硕士研究生,主要从事土的动力特性的研究,(电话)15530196860(电子信箱) zhangpengnf@126.com。
  • 基金资助:
    国家自然科学基金(51278383, 51238009, 51025827);国家重点基础研究发展973计划资助项目(2011CB411907);浙江省自然科学基金项目(Y1110751)

Effect of Additives on Dynamic Properties of Cement-Stabilized Soils

ZHANG Peng1, ZHU Zhen-de1, WANG Jun2, WANG Hai-yang3   

  1. 1.Geotechnical Research Institute, Hohai University, Nanjing 210098, China;
    2.Architecture and Civil Engineering College, Wenzhou University, Wenzhou 325000, China;
    3.Department of Irrigation Management of Dongying City, Dongying 257091,China
  • Received:2013-06-28 Revised:2014-05-12 Online:2014-05-12 Published:2014-05-12

摘要: 为研究水泥土的动态特性,采用普通水泥、矿渣水泥、水玻璃3种掺剂,利用共振柱,考虑不同掺量,在不同的围压和剪切应变的条件下,水泥土的剪切模量和阻尼比的变化规律进行了试验研究。试验结果表明:水泥土的最大剪切模量随围压的增加而增加,最小阻尼比随围压的增加而降低;3种掺剂在相同围压下矿渣水泥土的动剪切模量最大,阻尼比最小;水玻璃-水泥土在刚度退化之前承受的剪应力最大;水泥土的剪应变与动剪切模量的关系符合修正的Ramberg-Osgood模型曲线。

关键词: 水泥土, 共振柱试验, 剪切模量, 阻尼比

Abstract: To research the dynamic shear modulus and damping ratio of cement-stabilized soil, the dynamic properties of three types of cemented soil were studied using resonant column test. They are cemented soil, slag cement stabilized soil, and cement with sodium silicate stabilized soil .The amount of cement admixed, the magnitude of confining pressure and the amplitude of shearing strain are considered. Test results show that with the increase of confining pressure, the maximum shear modulus of cement stabilized soil increases and the minimum damping ratio decreases. The relationship of shear modulus versus shearing strain conforms with the Ramberg-Osgood equations using regression analysis. Under the same confining pressure, slag cement stabilized soil has the largest shear modulus and the smallest damping ratio. The results also indicate that the cement with sodium silicate stabilized soil is able to sustain larger shearing strain before stiffness degradation than the other additives do.

Key words: cement stabilized soil, resonant column test, shear modulus, damping ratio

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