The influence of stress history on the dynamic parameters of expansive soils

Li Jing-jing1,2, Kong Ling-wei1,2

Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 181-188.

PDF(1349 KB)
PDF(1349 KB)
Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 181-188.

The influence of stress history on the dynamic parameters of expansive soils

  • Li Jing-jing1,2, Kong Ling-wei1,2
Author information +
History +

Abstract

Dynamic shear modulus and damping ratio are the most important parameters for nonlinearity characteristics of the soil dynamic property. To consider the influence of stress history on the dynamics characteristics of the expansive soil, resonant column tests were carried out with compression paths of loading, unloading and reloading. Hyperbola models and empirical relationship were used to analyze the dynamic shear modulus and damping ratio, respectively. The recommended values of dynamic shear modulus ratio and damping ratio with shear strain of 5×10-6~10-2 were proposed, and their uncertainty affected by stress history was analyzed. Results show that stress history has a pronounced influence on the maximum of dynamic shear modulus and its decay rule. The dynamic shear modulus is greater in unloading and reloading path than that of loading path, the greatest amplification of which is 66.59%, but it seems no obvious connection between stress history and damping ratio. After experiencing higher load, the more unloading extent is, the greater uncertainty of dynamic shear modulus ratio is, and the maximum variation coefficients of dynamic shear modulus ratio and damping ratio are up to 46.30% and 48.99%, respectively. Conclusion can be drawn that the influence of stress history on dynamic shear modulus ratio and damping ratio should be taken into account in engineering design and construction. Dynamic parameters should be selected on the basis of corresponding stress history of the soil.

Key words

expansive soil / resonant column test / dynamic shear modulus / damping ratio / stress history

Cite this article

Download Citations
Li Jing-jing1,2, Kong Ling-wei1,2. The influence of stress history on the dynamic parameters of expansive soils[J]. Journal of Vibration and Shock, 2017, 36(12): 181-188

References

[1] Fahey M, Lehane B M, Stewart D. Soil stiffness for shallow foundation design in the Perth CBD[J]. Australian Geomechanics Journal, 2003, 38(3): 61-90.
[2] 孙田, 陈国兴, 王炳辉, 等. 砾石颗粒形状对砂砾土动剪切模量和阻尼比影响的试验研究[J]. 岩石力学与工程学报, 2014, 33(增2): 4211-4217.
SUN Tian, CHEN Guo-xing, WANG Bing-hui, et al. Experimental research of effect of granule shape on shear modulus and damping ratio of gravel[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(Supp.2): 4211-4217.
[3] 蔡辉腾, 李英民, 欧秉松. 福州地区典型土动剪切模量与阻尼比的试验研究[J]. 岩土力学, 2010, 31(2): 361-365.
CAI Hui-teng, LI Ying-min, OU Bing-song. Testing study of dynamic shear modulus and damping ratio of typical soils in Fuzhou area[J]. Rock and Soil Mechanics, 2010, 31(2): 361-365.
[4] 袁晓铭, 孙锐, 孙静, 等. 常规土类动剪切模量与阻尼比的试验研究[J]. 地震工程与工程振动, 2000, 20(4): 133-139.
YUAN Xiao-ming, SUN Rui, SUN Jing, et al. Laboratory experimental study on dynamic shear modulus ratio and damping ratio of soils[J]. Earthquake Engineering and Engineering Vibration, 2000, 20(4): 133-139
[5] 陈国兴, 刘雪珠, 朱定华, 等. 南京新近沉积土动剪切模量比与阻尼比的试验研究[J]. 岩土工程学报, 2006, 28(8): 1023-1027.
CHEN Guo-xing, LIU Xue-zhu, ZHU Ding-hua, et al. Experimental studies on dynamic shear modulus ratio and damping ratio of recently deposited soils in Nanjing[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(8): 1023-1027.
[6] 王志杰, 骆亚生, 王瑞瑞, 等. 不同地区原状黄土动剪切模量与阻尼比试验研究[J]. 岩土工程学报, 2010, 32(9): 1464-1469.
WANG Zhi-jie, LUO Ya-sheng, WANG Rui-rui, et al. Experimental study on dynamic shear modulus and damping ratio of undisturbed loess in different regions[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(9): 1464-1469.
[7] 杨果林, 邱明明, 何旭, 等. 膨胀土路堑基床新型防水层振动荷载下服役性能试验研究[J]. 振动与冲击, 2016, 35(5): 2-7.
[8] 尹松, 张先伟, 孔令伟, 等. 海洋沉积土动剪切模量与阻尼比的试验研究[J]. 岩土力学, 2015, 36(增1): 459-464.
YIN Song, ZHANG Xian-wei, KONG Ling-wei, et al. Testing study of dynamic shear modulus and damping ratio of seabed sediment[J]. Rock and Soil Mechanics, 2015, 36(Supp.1): 459-464.
[9] 张宇, 余飞, 陈善雄, 等. CAS-1模拟月壤动剪切模量与阻尼比的试验研究[J]. 岩土力学, 2014, 35(1): 74-82.
ZHANG Yu, YU Fei, CHEN Shan-xiong, et al. Experimental study of dynamic shear modulus and damping ratio of CAS-1 lunar soil simulant[J]. Rock and Soil Mechanics, 2014, 35(1): 74-82.
[10] 谢定义, 姚仰平, 党发宁. 高等土力学[M]. 北京: 科学出版社, 2008.
[11] 孙锐, 陈红娟, 袁晓铭. 土的非线性动剪切模量比与阻尼比不确定性分析[J]. 岩土工程学报, 2010, 32(8): 1228-1235.
SUN Rui, CHEN Hong-juan, YUAN Xiao-ming. Uncertainty of non-linear dynamic shear modular ratio and damping ratio of soils[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(8): 1228-1235.
[12] 谭罗荣, 孔令伟. 特殊岩土工程土质学[M]. 北京: 科学出版社, 2006.
[13] 谢定义, 陈存礼, 胡再强. 试验土工学[M]. 北京: 高等教育出版社, 2011.
PDF(1349 KB)

310

Accesses

0

Citation

Detail

Sections
Recommended

/