破碎性堆石料单剪试验研究

刘斯宏; 黄明坤; 王子健; 孔维耀; 谢浩; 王怡舒

doi:10.11779/CJGE201508021

破碎性堆石料单剪试验研究 English Version

1. 河海大学水利水电学院,江苏南京 210098;
2. 浙江省水利水电勘测设计研究院,浙江杭州 310002;
3. 上海市政工程设计研究总院（集团）有限公司,上海 200092

基金项目: 国家自然科学基金项目（51179059）; 江苏省2014年度普通高校研究生科研创新计划项目（KYZZ_0148）; 江苏省高校优势学科建设工程资助项目（YS11001）

详细信息

作者简介:
刘斯宏 (1964- ),男,教授,博士生导师,主要从事粒状体力学、土石坝工程及软土地基处理方面的研究。E-mail: sihongliu@hhu.edu.cn。

中图分类号: TU43
计量
- 文章访问数: 382
- HTML全文浏览量: 1
- PDF下载量: 259
出版历程
- 收稿日期: 2014-09-25
- 发布日期: 2015-08-24

Simple shear tests on breakable rockfill materials

1. Research Institute of Hydraulic Structure, Hohai University, Nanjing 210098, China;
2. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200092, China

摘要

摘要: 介绍了自行研制的叠环式大型单剪试验仪。对两种不同岩性的堆石料进行了不同竖向应力条件下大变形的单剪试验,分别研究了竖向应力施加过程（压缩过程）及单剪过程中颗粒破碎的变化。试验结果表明：颗粒破碎与颗粒抗压强度及施加的竖向应力有关,颗粒抗压强度小及施加的竖向应力大,压缩过程与剪切过程中颗粒破碎率大;无论是压缩过程还是剪切过程,颗粒破碎均存在一个临界值;颗粒破碎主要发生在压缩或剪缩过程中。
- 单剪试验 /
- 颗粒破碎 /
- 颗粒强度 /
- 堆石料
Abstract: A large-scale simple shear test device with staged shearing rings is developed. A series of simple shear tests are conducted on two different rockfill materials with different particle compressive strengths under different vertical stresses and large shear deformations. Changes of particle breakage during compression and simple shearing are investigated. The results show that the particle breakage relates with the compressive strengths of particles and the applied vertical stresses. The lower the particle compressive strength is and the higher the vertical stresses are, the larger the particle breakage takes place during the compression and the simple shearing process. The particle breakage may tend to a critical value either during the compression or the shearing process. The particle breakage mainly occurs in the process of the confined or shearing compression.
- simple shear test /
- particle breakage /
- particle strength /
- rockfill material

HTML全文

参考文献(13)

[1]	日本土质工学会. 粗粒料的现场压实[M]. 郭熙灵, 等译. 北京: 中国水利水电出版社, 1999: 7-8. (Japanese Society of Soil Mechanics and Foundation Engineering. Field compaction of coarse- grained materials[M]. Xi-ling, et al trans. Beijing: China Water Power Press, 1999: 7-8. (in Chinese))
[2]	刘恩龙, 覃燕林, 陈生水, 等. 堆石料的临界状态探究[J]. 水利学报, 2012, 43(5): 505-511. (LIU En-long, TAN Yan-lin, CHEN Sheng-shui, et al. Investigation on critical state of rockfill materials[J]. Journal of Hydraulic Engineering, 2012, 43(5): 505-511.(in Chinese))
[3]	MARSAL R J. Mechanical poperties of rockfill embankment dam engineering[M]. New York: Wiley, 1973: 109-200.
[4]	MARSAL R J.Large-scale testing of rockfill materials[J]. Journal of Soils Mechanics and Foundation Division, American Society of Civil Engineers, 1967, 93(2): 27-43.
[5]	MARSAL R J. 土石坝工程[M]. 南京: 水利出版社, 1979. (MARSAL R J. Embankment Dam Engineering[M]. Nanjing: Water Conservacy Press, 1979. (in Chinese))
[6]	郭庆国. 关于粗粒土抗剪强度特性的试验研究[J]. 水利学报, 1987(5): 59-66. (GUO Qing-guo. Experimental study on shear strengh characteristics about coarse-grained soil[J]. Journal of Hydraulic Engineering, 1987(5): 59-66. (in Chinese))
[7]	郭庆国. 粗粒土的工程特性及应用[M]. 郑州: 黄河水利出版社, 1998. (GUO Qing-guo. Engineering characteristics of coarse-grained soil and its application[M]. Zhengzhou: Yellow River Conservancy Press, 1998. (in Chinese))
[8]	刘汉龙, 秦红玉, 高玉峰, 等. 堆石粗粒料颗粒破碎试验研究[J]. 岩土力学, 2005, 26(4): 562-565. (LIU Han-long, QIN Hong-yu, GAO Yu-feng, et al. Experimental study on particle breakage of rockfill and coarse aggregates[J]. Rock and Soil Mechanics, 2005, 26(4): 562-565. (in Chinese))
[9]	LEE K L, FARHOOMAND I. Compressibility and crushing of granular soil in anisotropic triaxial compression[J]. Canadian Geotechnical Journal, 1967, 4: 69-86.
[10]	柏树田. 西北口混凝土面板堆石坝筑坝材料特性的试验研究[M]// 水利水电科学研究院科学研究论文集: 第32集(结构材料、岩土与抗震工程). 北京: 水利电力出版社, 1991: 19-29. (BAI Shu-tian. Experimental study on characteristics of rockfill materials of Xibeikou concrete face rockfill dam[M]// Scientific research papers of Institute of Water Conservancy and Hydroelectric Power Research (32): Structure material, geotechnical and earthquake engineering. Beijing: Hydaulic and electric power press, 1991: 19-29. (in Chinese))
[11]	OBBY O, HARDIN F. Crushing of soil particles[J]. Journal of Geotechnical Engineering, ASCE, 1985, 111(10): 1177-1192.
[12]	EBRAHIM Alaei, AHMAD Mahboubi. A discrete model for simulating shear strength and deformation behavior of rockfill material, considering the particle breakage phenomenon[J]. Granular Matter, 2012(14): 707-717.
[13]	刘尧, 卢延浩. 粗粒土大型单剪颗粒破碎试验研究[J]. 河海大学学报（自然科学版）, 2009, 37(2): 175-178. (LIU Yao, LU Ting-hao. Experimental study on large simple shear particle breakage of coarse-grained soil[J]. Journal of Hohai University (Natural Sciences), 2009, 37(2): 707-717. (in Chinese))