中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2016, Vol. 35 ›› Issue (4): 65-69.DOI: 10.3969/j.issn.1674-0696.2016.04.14

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

砂泥岩颗粒混合料往复剪切特性试验研究

王俊杰1,2, 吴晓1,2   

  1. (1. 重庆交通大学 国家内河航道整治工程技术研究中心,重庆 400074;2.重庆交通大学 水利水运工程教育部重点实验室,重庆400074)
  • 收稿日期:2015-11-09 修回日期:2015-12-20 出版日期:2016-08-20 发布日期:2016-08-20
  • 作者简介:第一作者:王俊杰(1973—),男,甘肃人,教授,博士生导师,主要从事岩土工程等方面的教学和科研工作。E-mail:wangjunjiehhu@163.com。
  • 基金资助:
    国家自然科学基金项目(51479012)

Experimental Study on Shearing Characteristics of Sandstone-mudstone Particle Mixture under Reciprocating Direct Shear

WANG Junjie1,2, WU Xiao1,2   

  1. (1. National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing 400074,P.R.China;2. Key Laboratory of Hydraulic and Waterway Engineering of Ministry of Education,Chongqing Jiaotong University, Chongqing 400074,P.R.China)
  • Received:2015-11-09 Revised:2015-12-20 Online:2016-08-20 Published:2016-08-20

摘要: 通过对ZJ型应变控制式直剪仪进行一定的改进,对砂泥岩颗粒混合料进行往复剪切试验,在一定的往复剪切次数的影响下,分析了剪切力、剪切位移、法向位移、剪切强度等一系列的变化情况。研究表明:砂泥岩颗粒混合料在往复剪切过程中,剪应力与剪切位移的关系整体呈“梭型”变化趋势,且逐渐重合,且试样发生了明显的法向位移;随着循环次数的增加,黏聚力呈先增加最终趋于稳定,内摩擦角呈逐渐减小最终不变的趋势。

关键词: 岩土工程, 砂泥岩颗粒混合料, 往复剪切, 剪切特性

Abstract: By improving the ZJ typed strain control direct shear apparatus, reciprocating shear tests on sandstone-mudstone particle mixture were carried out. As the result of number of reciprocating cuttings, a series of changes of shear force, shear displacement, vertical displacement,shear strength etc were analyzed. The research results show that in the process of reciprocating shearing the sandstone-mudstone particle mixture, the shear stress-shear displacement relation presented trend of change in shape of "shuttle" generally and increasingly overlap where the specimen undertook notable vertical displacement. With the increase of cyclic shear cycles changed, cohesive force presented a tread of increasing and then stabilization meanwhile friction angle also showed a tread of decreasing followed by the final stabilization.

Key words: geotechnical engineering, sandstone-mudstone particle mixture, reciprocating direct shear, shear properties

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