Duncan-Chang Model Parameters and Normalized Behavior of the Swelling Soft Rock of Xinyan Landslide

XIANG Liang-jun; WANG Qing; WANG Chao-yang; WANG Rui-ying; ZHANG Jing; MA Yu-fei; YANG Jun-hui

doi:10.3969/j.issn.1001-5485.2013.07.013

PDF(1460 KB)

Journal of Changjiang River Scientific Research Institute ›› 2013, Vol. 30 ›› Issue (7) : 64-68. DOI: 10.3969/j.issn.1001-5485.2013.07.013

ＲＯＣＫＳＯＩＬＥＮＧＩＮＥＥＲＩＮＧ

Duncan-Chang Model Parameters and Normalized Behavior of the Swelling Soft Rock of Xinyan Landslide

XIANG Liang-jun¹, WANG Qing¹, WANG Chao-yang²,WANG Rui-ying¹,ZHANG Jing¹, MA Yu-fei¹, YANG Jun-hui¹

Author information +

History +

Abstract

Soft rock with expansion properties is distributed widely along the highway in Yanbian area which gave rise to instability of slopes and brought about great damage in this area. In order to describe the strength and stress-strain characteristics of the geotechnical dielectric material in this area, the stability of Xinyan landslide on the Wangqing-Yanji highway in Jilin Province was analyzed and parameters of the support work were provided. Indoor consolidation-undrained shear test was carried out on the soil samples taken from the construct site. Results revealed that the stress-strain curves of the samples were typical hyperbola under low confining pressure, the soil exhibited weak strain hardening; while under high confining pressure, the soil displayed obvious strain hardening behavior. In association with Duncan-Chang model, the test results were analyzed to obtain parameters of the model. On the basis of this, the normalized behavior of expansive soil in this area was studied, and the results showed that the normalized degree was highest when the normalization factor was (σ₁-σ₃)_ult. Furthermore, the normalized equation of strain-stress curves was established, which would well predict the variation trend of stress-strain relation.

Key words

swelling soft rock / consolidation-undrained shear test / Duncan-Chang model / normalized behavior

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

XIANG Liang-jun, WANG Qing, WANG Chao-yang,WANG Rui-ying, ZHANG Jing, MA Yu-fei, YANG Jun-hui. Duncan-Chang Model Parameters and Normalized Behavior of the Swelling Soft Rock of Xinyan Landslide[J]. Journal of Changjiang River Scientific Research Institute. 2013, 30(7): 64-68 https://doi.org/10.3969/j.issn.1001-5485.2013.07.013

References

[1] 何满潮, 刘成禹, 武雄. 延吉盆地强膨胀性软岩边坡加固对策研究[J].吉林大学学报:地球科学版, 2005,35(4):496-500.(HE Man-chao, LIU Cheng-yu, WU Xiong. A Case Study on the Reinforcement Countermeasures for Strongly Swelling Soft Rock Slope in Yanji Basin[J]. Journal of Jilin University Earth Science Edition, 2005, 35(4): 496-500.(in Chinese)
[2] 何满潮, 冷曦晨, 衡朝阳,等. 延边地区公路沿线膨胀性软岩的发现与试验研究[J]. 岩石力学与工程学报,2003, 22(7): 1151-1155.(HE Man-chao, LENG Xi-chen, HENG Chao-yang, et al. Research on Expansive Soft Rock in Yanbian Region[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(7): 1151-1155.(in Chinese)
[3] 谷宪明,王清,冯志仁,等.延边地区公路沿线边坡失稳试验分析[J].自然灾害学报,2005,14(6):152-157.(GU Xian-ming, WANG Qing, FENG Zhi-ren, et al. Test Analysis on Instability of Slope along Highway in Yanji Area[J]. Journal of Natural Disasters, 2005, 14(6): 152-157.(in Chinese)
[4] 王晓蕾. 延吉盘地强膨胀软岩强度特性及本构关系研究[D].北京:中国地质大学(北京),2011.(WANG Xiao-lei. Research on Strength Characteristics and Constitutive Relationship of Strongly Expansive Soft Rock in Yanji Basin[D]. Beijing: China University of Geosciences, 2011.(in Chinese)
[5] 徐舜华,徐光黎,程瑶.黏性土的应力一应变关系归一化性状探讨[J].地质科技情报,2005,7(24),170-174.(XU Shun-hua, XU Guang-li, CHENG Yao. Normalization Character of Stress Strain Relations for Clays[J]. Geological Science and Technology Information. 2005,7(24),170-174.(in Chinese)
[6] LADD C C, FOOTT R, JSHIHARA K, et al. Stress Deformation and Strength Characteristics[C]∥Proceedings of the 9th International Conference on Soil Mechanics and Foundation Engineering, Tokyo, July 10-15, 1977: 421-440.
[7] 曾国熙.正常固结黏土不排水剪切的归一化性状[C]∥软土地基处理学术讨论会论文选集.北京:水利出版社,1980:13-26.(ZENG Guo-xi. Normalized Property of Normal Consolidation Clay under Undrained Shear Condition[C]//Proceedings of Academic Convocation about Soft Ground Treatment. Beijing: China Water Conservancy Press, 1980: 13-26.(in Chinese)
[8] 李作勤.黏土归一化性状的分析[J].岩土工程学报,1987,9(5):67-75.(LI Zhuo-qin. Analysis of the Normalized Property of Cohensive Clay[J]. Chinese Journal of Geotechnical Engineering, 1987, 9(5):67-75.(in Chinese)
[9] 张勇,孔令伟,等.武汉软土固结不排水应力- 应变归一化特性分析[J] .岩土力学,2006,27(9):1509-1513.(ZHANG Yong, KONG Ling-wei, et al. Normalized Stress-Strain Behavior of Wuhan Soft Clay[J]. Rock and Soil Mechanics, 2006,27(9): 1509-1513.(in Chinese)
[10]杨爱武等,天津吹填软土应力应变归一化特性研究[J]. 工程地质学报, 2010, 18(S1): 17-21.(YANG Ai-wu, et al. Normalized Stress-strain Behavior of Tianjin Soft Dredger Soil[J] Journal of Engineering Geology, 2010, 18(Sup.1): 17-21.(in Chinese)