Open AccessA Modified Elastic Plate Model for the Thickness of Reinforced Soil of Shield Tunnel End
Author(s) -
Sun Tingshuai,
Kezhi Song,
Huang Teng,
Luo Junhao,
Zhuang Sukun
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/570/2/022010
Subject(s) - shield , finite element method , materials science , structural engineering , stability (learning theory) , geotechnical engineering , geology , engineering , computer science , petrology , machine learning
The soil body of the shield end could be unstable and should be reinforced, and its thickness affects the stability and economy of engineering. The existing elastic thin plate model was too conservative for design. A modified elastic plate model was proposed for the calculation. Based on elastic finite element analysis data, optimal fitting was conducted for the proposed elastic model, and the coefficients of the model were obtained. A case study showed that the elastic thin plate model is too conservative when used to calculate the thickness of the reinforced soil body. The actual reinforced thickness in practice is between the values of the elastic thin plate model and the modified elastic plate model.