土工格室加筋饱和砂土动力特性试验研究

李小敏

doi:10.13204/j.gyjzG19121006

土工格室加筋饱和砂土动力特性试验研究

doi: 10.13204/j.gyjzG19121006

李小敏

浙江工业职业技术学院建筑工程学院, 浙江绍兴 312000

详细信息

作者简介:
李小敏,女,1970年出生,硕士,副教授。电子信箱:lxm1001@163.com

计量
- 文章访问数: 79
- HTML全文浏览量: 8
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2019-12-10
- 网络出版日期: 2021-06-04

TEST RESEARCH ON DYNAMIC PROPERTIES OF SATURATED SAND REINFORCED WITH GEOCELLS

LI Xiaomin

School of Architecture and Engineering, Zhejiang Polytechnic College, Shaoxing 312000, China

摘要

摘要: 以土工格室加筋饱和砂土作为研究对象，研究土工格室加筋饱和砂的动变形模量、阻尼比随加筋层数、格室高度、围压及动应变的变化规律。试验表明：相同工况下动应变随动应力的增大而增大，加筋率的提高对动应变抑制效果最显著；随着动应变的增大，同一工况在不同围压时的动变形模量均随之减小，较高围压时动变形模量也较大；同一工况阻尼比与动应变的变化无相关规律；当围压为50 kPa时，不同工况阻尼比均随动应变增大而减小并在动应变超过某一值后趋于稳定。
- 土工格室 /
- 应力-应变关系 /
- 动变形模量 /
- 阻尼比
Abstract: Taking geocell-reinforced saturated sand as research objects, the change laws of dynamic moduli of deformation, damping ratios of geocell-reinforced saturated sand with different reinforcement layers, geocell height, confining pressure and dynamic strain were studied. It was shown that the dynamic strain increased with the increase of dynamic stress in the same working condition, the increase of reinforcement contents could most obviously restrain the increase of dynamic strain. With the dynamic strain increase, the dynamic moduli of deformation decreased in the same working condition subjected to different confining pressure, the dynamic moduli of deformation under high confining pressure was larger. The damping ratios under the same working condition had no obvious rule with the increase of dynamic strain. The damping ratios under different working conditions decreased with the increase of dynamic strain subjected to confining pressure of 50 kPa and it tended to be contant after the dynamic strain exceeded a certain value.
- geocell /
- stress-strain relation /
- dynamic modulus of deformation /
- damping ratio

HTML全文

参考文献(13)

孙晋, 白晓红, 曾国红. 加筋土动弹性模量的动三轴试验研究[C]//第一届中国水利水电岩土力学与工程学术讨论会论文集. 2006.

高昂, 张孟喜, 朱华超, 等. 循环荷载及静载下土工格室加筋路堤模型试验研究[J]. 岩土力学, 2016, 37(7):1921-1928

,1946.

谢婉丽, 薛建功, 常波. 加筋土动力特性的三轴试验研究[J]. 灾害学, 2008, 23(增刊):120-125.

DINCER I. Models to Predict the Deformation Modulus and the Coefficient of Subgrade Reaction for Filling Structures[J]. Advances in Engineering Software, 2011,42(4):160-171.

王选仓, 马玉兰, 张磊. 路基顶面回弹弯沉验收标准修正[J]. 长安大学学报(自然科学版),2009,29(6):1-5.

BOOMINATHAN A, HARI S. Liquefaction Strength of Fly Ash Reinforced with Randomly Distributed Fibers[J]. Soil Dynamics and Earthquake Engineering, 2002, 22(9/10/11/12):1027-1033.

MAHER M H, WOODS R D. Dynamic Response of Sand Reinforced with Randomly Distributed Fibers[J]. Journal of Geotechnical Engineering, 1990, 116(7):1116-1131.

王家全, 徐良杰,黄世斌,等. 动载下土工格栅加筋桥台挡墙承载性能分析[J]. 岩土力学, 2019,40(11):4220-4228

,4269.

申大为,徐明,刘鹏飞. 加筋土整体式桥地震反应研究[J]. 工程力学, 2018,35(10):135-143.

任非凡,何江洋. 加筋土结构动力特性研究现状综述[J]. 中国地质灾害与防治学报, 2016, 35(2):120-129.

中华人民共和国住房和城乡建设部.地基动力特性测试规范:GB/T 50269-2015[S].北京:中国计划出版社,2015.

HARDIN B O, DRNEVICH V P. Shear Modulus and Damping in Soils:Measurement and Parameter Effects[J]. Journal of the Soil Mechanics and Foundation Engineering Division, 1972, 98(6):603-624.

陈伟, 孔令伟, 朱建群. 一种土的阻尼比近似计算方法[J]. 岩土力学, 2007, 28(增刊):789-791.

施引文献

资源附件(0)

访问统计