EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q<sub>2</sub> LOESS FROM YANAN SHANNXI, CHINA

SUN Wei-yu; Liang Qing-guo; YAN Song-hong; OU Er⁃feng; SHAO Sen-lin

Volume 21 Issue 3

Sep. 2015

Turn off MathJax

Article Contents

Article Navigation > Journal of Geomechanics > 2015 > 21(3): 386-392

SUN Wei-yu, Liang Qing-guo, YAN Song-hong, et al., 2015. EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q2 LOESS FROM YANAN SHANNXI, CHINA. Journal of Geomechanics, 21 (3): 386-392.

Citation:

SUN Wei-yu, Liang Qing-guo, YAN Song-hong, et al., 2015. EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q₂ LOESS FROM YANAN SHANNXI, CHINA. Journal of Geomechanics, 21 (3): 386-392.

SUN Wei-yu, Liang Qing-guo, YAN Song-hong, et al., 2015. EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q2 LOESS FROM YANAN SHANNXI, CHINA. Journal of Geomechanics, 21 (3): 386-392.

Citation:

SUN Wei-yu, Liang Qing-guo, YAN Song-hong, et al., 2015. EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q₂ LOESS FROM YANAN SHANNXI, CHINA. Journal of Geomechanics, 21 (3): 386-392.

PDF( 5177 KB)

EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q₂ LOESS FROM YANAN SHANNXI, CHINA

SUN Wei-yu^{1, 2
,},
Liang Qing-guo^{1, 2},
YAN Song-hong^{1, 2},
OU Er⁃feng^{1, 2},
SHAO Sen-lin^{1, 2}

1.
Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province, Lanzhou 730070, China
2.
School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

More Information

Received: 2015-01-22
Published: 2015-09-01

Abstract

Abstract

The unconfined compressive and penetration tensile tests were conducted with different loading rates on undisturbed Q₂ loess from Baotashan Tunnel in Yan'an, Shanxi, and the impacts on the unconfined compressive strength and tensile strength were studied. It shows that the loading rates have a great impact on the compressive strength and tensile strength, which all increase with the increase of loading speed. The ratios of height to diameter have a great influence on the tensile strength of the Q₂ loess, when the ratio of height to diameter of the samples is about 1.0, the impact on the tensile strength tends to be relatively small. Therefore, when the tensile strength of loess is to be measured by axial unconfined penetration test, the ratio of height to diameter of the samples should be 1.0. Within the scope of the test loading rates, the loading rates have little effect on the ratios of compressive strength to tensile ratio for the undisturbed Q₂ loess in Baotashan tunnel, which vary between 9.88 and 13.68.
- undisturbed Q₂ loess,
- tensile strength,
- loading rate,
- ratio of compressive strength to tensile strength

FullText(HTML)

References(13)

References

[1]	党进谦, 李靖, 张伯平.黄土单轴拉裂特性的研究[J].水力发电学报, 2001, 7(4):44~47. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB200104006.htm DANG Jin-qian, LI Jing, ZHANG Bo-ping. Uniaxial tension crack characteristics of loess[J]. Journal of Engineering, 2001, 7(4): 44~47. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB200104006.htm
[2]	Fang H Y, Daniels J. Introductory geotechnical engineering: An environmental perspective[M]. London and New York: Taylor & Francis, 2006.
[3]	骆亚生, 邢义川.黄土的抗拉强度[J].陕西水利发电, 1998, 14(4):6~10. http://www.cnki.com.cn/Article/CJFDTOTAL-SKQB201702032.htm LUO Ya-sheng, XING Yi-chuan. Tensile strength characteristics of loess[J]. Journal of Shaanxi Water Power, 1998, 14(4): 6~10. http://www.cnki.com.cn/Article/CJFDTOTAL-SKQB201702032.htm
[4]	邢义川, 骆亚生, 李振.黄土的断裂破坏强度[J].水力发电学报, 1999, (4):36~44. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB199904003.htm XING Yi-chuan, LUO Ya-sheng, LI Zhen. The rupture failure strength of loess[J]. Journal of Hydroelectric Engineering, 1999, (4): 36~44. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB199904003.htm
[5]	党进谦, 郝月清, 李靖.非饱和黄土抗拉强度的研究[J].河海大学学报, 2001, 29(6):106~108. http://www.cnki.com.cn/Article/CJFDTOTAL-HHDX200106024.htm DANG Jin-qian, HAO Yue-qing, LI Jing. Study on tensile strength of unsaturated loess[J]. Journal of Hehai University, 2001, 29(6): 106~108. http://www.cnki.com.cn/Article/CJFDTOTAL-HHDX200106024.htm
[6]	孙萍, 彭建兵, 殷跃平, 等.黄土拉伸试验及其破裂过程仿真分析[J].岩土力学, 2010, 31(2):633~637. http://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201002060.htm SUN Ping, PENG Jian-bing, YIN Yue-ping, et al. Tensile test and simulation analysis of fracture process of loess [J]. Rock and Soil Mechanics, 2010, 31(2): 633~637. http://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201002060.htm
[7]	李保雄, 牛永红, 苗天德.兰州马兰黄土的物理力学特性[J].岩土力学, 2007, 28(6):1077~1896. http://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200706002.htm LI Bao-xiong, NIU Yong-hong, MIAO Tian-de. Physico-mechanical characteristics of Malan loess in Lanzhou region[J]. Rock and Soil Mechanics, 2007, 28(6): 1077~1082. http://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200706002.htm
[8]	沈忠言, 彭万巍, 刘永智.冻结黄土抗拉强度的试验研究[J].冰川冻土, 1995, 17(4):315~321. http://www.cnki.com.cn/Article/CJFDTOTAL-BCDT504.006.htm SHEN Zhong-yan, PENG Wan-wei, LIU Yong-zhi. Tensile strength of frozen saturated loess [J]. Journal of Glaciology and Geocryology, 1995, 17(4): 315~321. http://www.cnki.com.cn/Article/CJFDTOTAL-BCDT504.006.htm
[9]	铁道部第一勘察设计院.铁路工程土工试验规程[M].北京:中国铁道出版社, 2004. First Survey and Design Institute. Test methods of soils for railway engineering[M]. Beijing: China Railway Publishing House, 2004.
[10]	吴绵拔.加载速率对岩石抗压和抗拉强度的影响[J].岩土工程学报, 1982, 4(2):97~106. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC198202009.htm WU Mian-ba. The effect of loading rate on the compressive and tensile strength of rock [J]. Chinese Journal of Geotechnical Engineering, 1982, 4(2): 97~106. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC198202009.htm
[11]	杨圣奇, 苏承东, 徐卫亚.岩石材料尺寸效应的试验和理论研究[J].工程力学, 2005, 22(4):112~118. http://www.cnki.com.cn/Article/CJFDTOTAL-GCLX200504021.htm YANG Sheng-qi, SU Cheng-dong, XU Wei-ya. Experimental and theoretical study of size effect of rock material[J]. Engineering Mechanics, 2005, 22(4): 112~118. http://www.cnki.com.cn/Article/CJFDTOTAL-GCLX200504021.htm
[12]	张明, 卢裕杰, 介玉新, 等.不同加载条件下岩石强度尺寸效应的数值模拟[J].水力发电学报, 2011, 30(4):147~153. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB201104022.htm ZHANG Ming, LU Yu-jie, JIE Yu-xin, et al. Numerical simulation of strength size effect of rocks under different loading[J]. Journal of Hydroelectric Engineering, 2011, 30(4): 147~153. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB201104022.htm
[13]	梁庆国, 赵磊, 安亚芳, 等.兰州Q₄黄土各向异性的初步研究[J].岩土力学, 2012, 33(1):17~23. http://d.wanfangdata.com.cn/Periodical/ytlx201201003 LIANG Qing-guo, ZHAO Lei, AN Ya-fang, et al. Preliminary study of anisotropy of Q₄ loess in Lanzhou[J]. Rock and Soil Mechanics, 2012, 33(1): 17~23. http://d.wanfangdata.com.cn/Periodical/ytlx201201003

Relative Articles

Supplements(0)

Cited By

Proportional views

Proportional views

Figures(11) / Tables(1)

Get Citation

PDF

XML

Article Metrics

Article views (169) PDF downloads(7)

EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q₂ LOESS FROM YANAN SHANNXI, CHINA

Abstract

References

Proportional views

Catalog

Article Metrics

Proportional views

Related

EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q2 LOESS FROM YANAN SHANNXI, CHINA

Abstract

References

Proportional views

Catalog

Article Metrics

Proportional views

Related

Export File

Citation

Format

Content

EXPERIMENTAL STUDY ON TENSILE STRENGTH OF UNDISTUBED Q₂ LOESS FROM YANAN SHANNXI, CHINA