A new method for predicting consolidation settlements of soft ground based on monitoring results

• Autorzy: Meng Xiong , Zheng Jifa , Yang Biyu

Identyfikatory

DOI

10.24425/ace.2024.149871

• Języki publikacji: EN

Abstrakty

EN

Excessive settlement or differential settlement of subgrade will lead to the deterioration of line operational conditions, the reduction of passenger comfort, and even endanger the safety of traffic. Therefore, it is of great significance to study the settlement prediction of subgrade. In order to predict the settlement of foundation under the next level of loading earlier during the embankment construction process, a new method of predicting settlement of soft soil subgrade is proposed. Firstly, based on monitoring results of soft soil foundation, the consolidation parameters of soil layer are back-calculated according to the three-point method. Then, combined with the theory of the consolidation degree of graded loading, the formula that can predict settlement under different loading conditions are derived. Eventually, the practical application of the method is verified by the prediction and comparative analysis of measured settlements based on engineering examples. The result of research shows that the method can predict the foundation settlement after loading during construction of engineering fill. This method has obvious advantages over the traditional curve fitting method and can guide the actual engineering construction.

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2024
• Tom: Vol. 70, nr 2
• Strony: 403--416
• Opis fizyczny: Bibliogr. 21 poz., il.

Twórcy

autor

Meng Xiong

• The Investment and Development Co., LTD. Zhaotong, China

• https://orcid.org/0009-0001-1918-5426

autor

Zheng Jifa

• Changsha University of Science and Technology, School of Transportation Engineering, Changsha, China

• https://orcid.org/0009-0008-0721-1026

autor

Yang Biyu

• The Investment and Development Co., LTD., Zhaotong, China

• https://orcid.org/0009-0000-8326-8544

Bibliografia

• [1] L. Zheng, F. Ran, C. Lihao, S. Jianbo, and X. Shaohua, “Long-term deformation of highway subgrade under coupling effect of traffic load and drying-wetting cycles”, International Journal of Geomechanics, vol. 20, no. 2, 2020, doi: 10.1061/(ASCE)GM.1943-5622.0001568.
• [2] M. Nadeem, M. Akbar, P. Huali, L. Xiaoqing, O. Guoqiang, and A. Amin, “Investigation of the settlement prediction in soft soil by Richards Model: based on a linear least squares-iteration method”, Archives of Civil Engineering, vol. 67, no. 2, pp. 491-506, 2021, doi: 10.24425/ace.2021.137181.
• [3] W. Tingyu, J. Hongxu, G. Lin, S. Honglei, T. Junhao, J. Yaochen, and W. Pengfei, “Predicting method on settlement of soft subgrade soil caused by traffic loading involving principal stress rotation and loading frequency”, Soil Dynamics and Earthquake Engineering, vol. 152, art. no. 107023, 2022, doi: 10.1016/j.soildyn.2021.107023.
• [4] X. Junhua, S. Jie, W. Nan, L. Mengbo, W. Hongyu, S. Siqi, and L. Xuyou, “Long-term settlement of metro viaduct piers: a case study in Shanghai soft soil”, Transportation Geotechnics, vol. 42, art. no. 101075, 2023, doi: 10.1016/j.trgeo.2023.101075.
• [5] F. Shuangxi and L. Huayang, “A settlement prediction model considering tidal loading and traffic loading of soft soil subgrade”, Computers and Geotechnics, vol. 144, art. no. 104639, 2022, doi: 10.1016/j.compgeo.2022.104639.
• [6] M. Esmaeili and H. Khajehei, “Mechanical behavior of embankments overlying on loose subgrade stabilized by deep mixed columns”, Journal of Rock Mechanics and Geotechnical Engineering, vol. 8, no. 5, pp. 651-659, 2016, doi: 10.1016/j.jrmge.2016.02.006.
• [7] S. S. Roy and K. Deb, “Bearing capacity of rectangular footings on multilayer geosynthetic-reinforced granular fill over soft soil”, International Journal of Geomechanics, vol. 17, no. 9, 2017, doi: 10.1061/(ASCE)GM.1943-5622.0000959.
• [8] N. Jing, I. Buddhima, G. Xueyu, at al., “Model of soft soils under cyclic loading”, International Journal of Geomechanics, vol. 15, no. 4, art. no. 04014067, 2015, doi: 10.1061/(ASCE)GM.1943-5622.0000411.
• [9] Z. D. Cui and S. X. Ren, “Prediction of long-term settlements of subway tunnel in the soft soil area”, Natural Hazards, vol. 74, no. 2, pp. 1007-1020, 2014, doi: 10.1007/s11069-014-1228-y.
• [10] P. Popielski, B. Bednarz, T. Majewski, and M. Niedostatkiewicz, “Settlement of a historic building due to seepage-induced soil deformation”, Archives of Civil Engineering, vol. 69, no. 2, pp. 65-82, 2023, doi: 10.24425/ace.2023.145253.
• [11] X. Geng and H. S. Yu, “A large-strain radial consolidation theory for soft clays improved by vertical drains”, Geotechnique, vol. 67, no. 11, pp. 1020-1028, 2017, doi: 10.1680/jgeot.15.T.013.
• [12] L. Chunlin, “A simplified method for prediction of embankment settlement in clays”, Journal of Rock Mechanics and Geotechnical Engineering, vol. 6, no. 1, pp. 61-66, 2014, doi: 10.1016/j.jrmge.2013.12.002.
• [13] S.-A. Tan and S.-H. Chew, “Comparison of the hyperbolic and ASAOKA observational method of monitoring consolidation with vertical drains”, Soils and Foundations, vol. 36, no. 3, pp. 31-42, 1996, doi: 10.3208/sandf.36.3_31.
• [14] S. G. Chung and H. J. Kweon, “Prediction of radial consolidation settlement with consideration of sampling range effect: Updated observational methods”, Journal of Geotechnical and Geoenvironmental Engineering, vol. 147, no. 12, 2021, doi: 10.1061/(ASCE)GT.1943-5606.0002704.
• [15] M. A. Al-Shamrani, “Applying the hyperbolic method and Ca/Cc concept for settlement prediction of complex organic-rich soil formations”, Engineering Geology, vol. 77, no. 1-2, pp. 17-34, 2005, doi: 10.1016/j.enggeo.2004.07.004.
• [16] Z. Caihui and L. Ning, “Ranking of influence factors and control technologies for the post-construction settlement of loess high-filling embankments”, Computers and Geotechnics, vol. 118, art. no. 103320, 2020, doi: 10.1016/j.compgeo.2019.103320.
• [17] D. G. Fredlund and J. U. Hasan, “One-dimensional consolidation theory: unsaturated soils”, Canadian Geotechnical Journal, vol. 16, no. 3, pp. 521-531, 1979, doi: 10.1139/t79-058.
• [18] L. Julie, R. Wayne, and S. Nagaratnam, “Consolidation behavior of soils subjected to asymmetric initial excess pore pressure distributions”, International Journal of Geomechanics, vol. 10, no. 5, pp. 181-189, 2010, doi: 10.1061/(ASCE)GM.1943-5622.0000061.
• [19] K. C. Foye, P. Basu, and M. Prezzi, “Immediate settlement of shallow foundations bearing on clay”, International Journal of Geomechanics, vol. 8, no. 5, pp. 300-310, 2008, doi: 10.1061/(ASCE)1532-3641(2008)8:5(300).
• [20] Z. Changsheng, G. Mingxian, and Z. Xiaojun, “Variation laws of consolidation coefficent of marine clay in Houhai Bay of Shenzhen”, Chinese Journal of Geotechnical Engineering, vol. 35, no. A1, pp. 247-252, 2013.
• [21] G. Qinghua, “The Study of Settlement Calculation and Consolidation Characteristic for Vacuum Combined with Surcharge Preloading”, M.Eng. thesis, Hohai University, China, 2007.