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作者:

Kong, Fanchao (Kong, Fanchao.) | Zhou, Xin (Zhou, Xin.) | Guo, Caixia (Guo, Caixia.) | Lu, Dechun (Lu, Dechun.) | Du, Xiuli (Du, Xiuli.)

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EI Scopus SCIE

摘要:

Support vector regression (SVR) with sparrow search algorithm (SSA) is developed as the machine learning (ML) model to predict maximum surface settlement smax caused by tunneling. A novel method for calibrating boundary conditions of analytical solution is proposed, where the maximum surface settlement derived by the analytical method is equal to smax predicted by SSA-SVR method. The elastic analytical solution for stratum displacement of a shallow tunnel is presented by the complex variable method, when the calibrated nonuniform displacement function is applied as the tunnel displacement boundary condition. The proposed analytical solution-machine learning (AM) method can predict the stratum displacement field prior to the tunnel excavation. Seventythree tunnel engineering cases are employed to verify the rationality of the proposed SSA-SVR method in predicting smax. The value of R2 in the training and test process is 0.894 and 0.877, respectively. Taking Heathrow Express Trial Tunnel as an example, the potential of the proposed AM method in predicting stratum displacement is presented where the influence of cohesion strength, internal friction angle, Young's elastic modulus of stratum, tunnel radius and depth are considered. The proposed AM method can well predict the stratum surface settlement trough curve, vertical and horizontal displacement at different positions.

关键词:

Complex variable method Support vector regression Sparrow search algorithm Analytical solution of stratum displacement Nonuniform displacement function

作者机构:

  • [ 1 ] [Kong, Fanchao]North China Elect Power Univ, Sch Water Resources & Hydropower Engn, Beijing 102206, Peoples R China
  • [ 2 ] [Zhou, Xin]Beijing Univ Technol, Inst Geotech & Underground Engn, Beijing, Peoples R China
  • [ 3 ] [Guo, Caixia]Beijing Univ Technol, Inst Geotech & Underground Engn, Beijing, Peoples R China
  • [ 4 ] [Lu, Dechun]Beijing Univ Technol, Inst Geotech & Underground Engn, Beijing, Peoples R China
  • [ 5 ] [Du, Xiuli]Beijing Univ Technol, Inst Geotech & Underground Engn, Beijing, Peoples R China

通讯作者信息:

  • [Guo, Caixia]Beijing Univ Technol, Inst Geotech & Underground Engn, Beijing, Peoples R China;;

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来源 :

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

ISSN: 0955-7997

年份: 2023

卷: 159

页码: 201-212

3 . 3 0 0

JCR@2022

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