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[1]孙田,陈国兴,朱定华.空心圆柱扭剪仪的改进及应用[J].南京工业大学学报(自然科学版),2014,36(01):53-59.[doi:10.3969/j.issn.1671-7627.2014.01.010]
 SUN Tian,CHEN Guoxing,ZHU Dinghua.Improvements and application of hollow cylinder torsional shear apparatus[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(01):53-59.[doi:10.3969/j.issn.1671-7627.2014.01.010]
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空心圆柱扭剪仪的改进及应用()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年01期
页码:
53-59
栏目:
出版日期:
2014-01-20

文章信息/Info

Title:
Improvements and application of hollow cylinder torsional shear apparatus
文章编号:
1671-7627(2014)01-0053-07
作者:
孙田陈国兴朱定华
南京工业大学 江苏省土木工程防震技术研究中心 岩土工程研究所,江苏 南京 210009
Author(s):
SUN TianCHEN GuoxingZHU Dinghua
Civil Engineering & Earthquake Disaster Prevention Center of Jiangsu Province, Institute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China
关键词:
空心圆柱扭剪仪 改进 动力特性试验 砂砾土
Keywords:
hollow cylinder torsional shear apparatus improvement dynamic characteristic test gravels
分类号:
TU415
DOI:
10.3969/j.issn.1671-7627.2014.01.010
文献标志码:
A
摘要:
英国GDS公司的中型空心圆柱扭剪仪动力加载功能强,测试精度高,但其研究对象仅限于砂土和黏性土。为开展砂砾土动力特性试验,对扭剪仪进行改进:用实心不锈钢板置换扭剪仪底座中铜芯透水石,得到实心底座,适合扭剪仪试验的土样中最大颗粒粒径由2 mm增大至10 mm。对改进后扭剪仪开展了性能验证试验,结果表明:改进后的实心底座与工作室底座接触较好,在应力控制和应变控制条件下,输出波形完整,幅值稳定,孔压计、轴向位移计等传感器都发挥其功能且测试结果正常,可完成砂砾土动力特性试验。
Abstract:
To test the dynamic characteristics of gravels,improvements were made to the medium-sized hollow cylindrical torsional shear apparatus provided by GDS Instruments Ltd.,United Kingdom, but is was only suitable for sand and cohesive soil.A solid base was made with solid stainless steel plate to replace the original copper core permeable stone so that the largest size of grain samples increased from 2 mm to 10 mm,therefore it was possible to test the dynamic characteristics of gravel soil.Performance verification tests were made to the improved torsional shear apparatus.It was shown that the improved solid base matched well with studio base; output waveforms with steady amplitude were complete under both stress and strain control conditions; and sensors, such as piezometer and axial displacement meter worked well, and normal results were achieved.The dynamic characteristic test for gravel soil was performed.

参考文献/References:

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相似文献/References:

[1]潘华,陈国兴.复杂应力条件下饱和南京细砂门槛剪应变特性[J].南京工业大学学报(自然科学版),2011,33(03):28.
 PAN Hua,CHEN Guoxing.Characteristics of threshold shear strain of saturated Nanjing fine sand under complex stress condition[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2011,33(01):28.

备注/Memo

备注/Memo:
收稿日期:2013-04-23
基金项目:国家自然科学基金(41172258); 教育部高等学校博士学科点专项科研基金(20113221110009); 江苏省高校研究生科研创新计划(CXZZ11_0345)
作者简介:孙田(1984—),男,湖北天门人,博士生,主要研究方向为土动力学; 陈国兴(联系人)教授,E-mail:gxc6307@163.com..
更新日期/Last Update: 2014-01-20