Numerical Analysis for Shallow Landslides of Expansive Soil Slopes Based on Three Fields Coupling

XIAO Jie; TAN Yuefeng; TONG Chao; YANG Heping; CHANG Jin; ZOU Weilie; CHEN Guanyi

doi:10.13204/j.gyjzg21070206

Volume 52 Issue 7

Oct. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(7): 128-136,118

Tong Genshu, Xu Yuanjie, Zhang Lei. ANALYSIS OF GLOBAL STABILITY OF COLD-FORMED Z PURLINS UNDER WIND SUCTION[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 26-33. doi: 10.13204/j.gyjz201312004

Citation:

XIAO Jie, TAN Yuefeng, TONG Chao, YANG Heping, CHANG Jin, ZOU Weilie, CHEN Guanyi. Numerical Analysis for Shallow Landslides of Expansive Soil Slopes Based on Three Fields Coupling[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(7): 128-136,118. doi: 10.13204/j.gyjzg21070206

Tong Genshu, Xu Yuanjie, Zhang Lei. ANALYSIS OF GLOBAL STABILITY OF COLD-FORMED Z PURLINS UNDER WIND SUCTION[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 26-33. doi: 10.13204/j.gyjz201312004

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Numerical Analysis for Shallow Landslides of Expansive Soil Slopes Based on Three Fields Coupling

doi: 10.13204/j.gyjzg21070206

1. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410004, China;
2. China Railway Research Institute Co. Ltd.,Chengdu 611731, China;
3. School of Civil Engineering, Changsha University, Changsha 410022, China;
4. School of Civil Engineering, Wuhan University, Wuhan 430072, China;
5. Guangdong Honggao Construction Co.Ltd., Dongguan 523507, China

Received Date: 2021-07-02
Available Online: 2022-10-28

Abstract

Abstract

To revealing the reasons for shallow landslides of expansive soil slopes, in reference to the existing calculation ways of multifield-coupling numerical analysis, the seepage processes from unsaturation to saturation in expansive soil slopes and hygroscopic expansion processes were simulated by the two-phase flow module and thermal module of the finite difference software FLAC^2D;based on the transformation relations for saturation degrees, temperatures and thermal expansion coefficients of expansive soil and integrating and extracting the information from both of the modules simultaneously, the hygroscopic expansion effect of expansive soil was simulated in time;the three fields involving the seepage field, displacement field and stress field were coupled under consideration for the changes of groundwater levels and permeability coefficients and intensity attenuation. And then, the numerical model with or without expansive deformation was constructed. The seepage processes from unsaturation to saturation in slopes considered and not considered the hygroscopic expansion during rainfall and the stability of slopes were simulated individually;the difference of seepage fields and slopes stability between considering and not considering the hygroscopic expansion effect in the same rainfall intensities but different rainfall duration was contrasted and analyzed. The important reason caused shallow landslides of expansive soil slopes was revealed, it was hygroscopic expansion of expansive soil. Furthermore, the stability of expansive soil slopes under different rainfall intensities and durations was further studied, the variation and distribution of the seepage field and stress field in slopes were compared and analyzed at the same time, and the effects of different rainfall conditions on shallow landslides were obtained.
- expansive soil slope,
- shallow landslide,
- rainfall,
- three field coupling,
- numerical analysis,
- swelling deformation

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References(19)

References

[1]	包承刚. 非饱和土的性状及膨胀土边坡稳定问题[J]. 岩土工程学报,2004,26(1):1-15.
[2]	童超, 杨和平. 由膨胀土内比表面及孔径分布来评价其膨胀行为[J]. 中外公路, 2017, 37(1):209-215.
[3]	张连杰. 降雨入渗条件下膨胀土边坡稳定性分析[D]. 北京:中国地质大学, 2016.
[4]	肖杰, 杨和平, 李晗峰, 等. 膨胀土边坡浅层破坏稳定性分析[J]. 交通运输工程学报, 2014, 14(2):21-27.
[5]	叶为民, 万敏, 陈宝, 等. 干湿循环条件下高压实膨润土的微观结构特征[J]. 岩土工程学报, 2011, 33(8):1173-1177.
[6]	魏星, 王刚. 干湿循环作用下击实膨胀土胀缩变形模拟[J]. 岩土工程学报, 2014, 36(8):1423-1431.
[7]	方瑾瑾, 杨小林, 冯以鑫, 等. 干湿循环后膨胀土力学特性的真三轴试验研究[J/OL]. 岩石力学与工程学报. https://doi.org/10.13722/j.cnki.jrme. 2020.0902.
[8]	LIU G, TOLL D G, KONG L, et al. Matric suction and volume characteristics of compacted clay soil under drying and wetting cycles[J]. Geotechnical Testing Journal, 2020, 43(2):464-479.
[9]	徐锴, 耿之周, 李雄威. 脱湿速率对膨胀土堑坡稳定性的影响分析[J].岩土工程学报, 2017, 39(增刊1):131-134.
[10]	杨和平, 程斌, 肖杰, 等. 土工格栅反包加筋支护膨胀土堑坡的工作机理[J]. 公路交通科技, 2015, 32(9):1-8.
[11]	程展林, 龚壁卫. 膨胀土边坡[M]. 北京:科学出版社, 2015.
[12]	郑俊杰,郭震山,崔岚,等. 考虑非饱和渗流与增湿膨胀下的膨胀土隧道稳定性分析[J]. 岩土力学, 2017, 38(11):3271-3277.
[13]	丁金华,陈仁朋,童军等. 基于多场耦合数值分析的膨胀土边坡浅层膨胀变形破坏机制研究[J]. 岩土力学,2015(增刊1):159-168.
[14]	张良以, 陈铁林, 张顶立. 降雨诱发膨胀土边坡渐进破坏研究[J]. 岩土工程学报, 2019, 41(1):70-77.
[15]	QI S, VANAPALLI S K. Hydro-mechanical coupling effect on surficial layer stability of unsaturated expansive soil slopes[J]. Computers & Geotechnics, 2015, 70:68-82.
[16]	石振明, 沈丹祎, 彭铭, 等.考虑多层非饱和土降雨入渗的边坡稳定性分析[J].水利学报, 2016, 47(8):977-985.
[17]	肖杰, 杨和平, 林京松, 等. 模拟干湿循环及含低围压条件的膨胀土三轴试验[J].中国公路学报, 2019, 32(1):21-28.
[18]	Itasca Consulting Group Inc. Fast lagrangian analysis of continua in two dimensions, user's manual[M]. Minnesota:Itasca Consulting Group Inc., 2011.
[19]	贺鹏. 降雨条件下膨胀土堑坡浅层滑坍及加筋处治效果数值模拟[D]. 长沙:长沙理工大学, 2014.

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