[1] Yuan Wei, Zhu Runtian, Su Yinqiang, Feng Qi, et al. Settlement prediction method for staged preloading on soft clay ground [J]. Journal of Southeast University (English Edition), 2024, 40 (1): 41-48. [doi:10.3969/j.issn.1003-7985.2024.01.005]

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Settlement prediction method for staged preloading on soft clay ground()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

40

Issue:

2024 1

Page:

41-48

Research Field:

Civil Engineering

Publishing date:

2024-03-20

Info

Title:

Settlement prediction method for staged preloading on soft clay ground

Author(s):

Yuan Wei¹;  Zhu Runtian²;  Su Yinqiang²;  Feng Qi³;  Chu Chengfu⁴;  Deng Yongfeng¹

¹ School of Transportation, Southeast University, Nanjing 211189, China
² Hegang Highway Co., Ltd., Zhuhai 519000, China
³ College of Transportation Engineering, Nanjing Tech University, Nanjing 211816, China
⁴ School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China

Keywords:

Asaoka method;  settlement prediction;  staged preloading;  consolidation coefficient

PACS:

TU447

DOI:

10.3969/j.issn.1003-7985.2024.01.005

Abstract:

To accurately predict the settlement of soft soil foundations under graded surcharge preloading, the Asaoka method was improved. Considering the change in the soil consolidation coefficient with load, the slope of the settlement prediction line was modified, and a prediction calculation method for the prediction line intercept was used. The improved Asaoka method considered the influence of consolidation stress on the consolidation coefficients and nonlinearity of soil consolidation. The reliability of the improved method was then verified through indoor consolidation tests and field observation. The results demonstrate that the consolidation coefficient C_v is not a constant, and it satisfies the relationship with the consolidation pressure P: C_v=aln(blnP), which has an error of less than 5%. The settlement prediction lines at various stress levels are not parallel, and the improved method exhibites a lower error rate than the original Asoaka method. The improved Asaoka method offers higher prediction accuracy than the traditional method and can reliably predict the settlement of soft soil foundations during graded surcharge preloading.

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Memo

Memo:

Biographies: Yuan wei(1994—), male, Ph.D candidate;Deng Yongfeng(corresponding author), male, Ph.D, professor, noden@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 42172307, 42072293).
Citation: Yuan Wei, Zhu Runtian, Su Yinqiang, et al. Settlement prediction method for staged preloading on soft clay ground[J].Journal of Southeast University(English Edition), 2024, 40(1):41-48.DOI:10.3969/j.issn.1003-7985.2024.01.005.

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