Lueprasert, Prateep

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Preferred name
Lueprasert, Prateep
Alternative Name
Lueprasert, P.
Main Affiliation
Email
prateep.lu@kmitl.ac.th

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    Item type:Publication,
    Investigation on pile-soil-tunnel interaction due to adjacent loaded pile row by 3D FEM
    (2018-08-14)
    Heama, Narunat
    ;
    Jongpradist, Pornkasem
    ;
    Lueprasert, Prateep
    ;
    Suwansawat, Suchatvee
    The effect of adjacent loaded pile row on the existing tunnel is analysed by 3D finite element method. The MRTA project is used as reference case in this study. The case study is divided into two cases, tunnel and pile tip located in soft clay and stiff clay, respectively. The pile diameter of 1 m and pile tip located at the elevation of tunnel crown with various number of piles within the row were considered. The analysis results are shown in terms of total soil displacement (without tunnel) and maximum tunnel deformations. Both total soil displacements and tunnel deformation increase with the number of piles and approach a maximum value when the number of piles is greater than 13 and 11 for cases tunnel in soft and stiff clay, respectively. This reveals that the tunnel deformation mechanism is primarily due to the soil displacement.
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    Item type:Publication,
    Influence of pile row under loading on existing tunnel
    (2019-01-01)
    Jongpradist, P.
    ;
    Haema, N.
    ;
    Lueprasert, P.
    This paper presents the study of the effect on existing water supply tunnels due to adjacent pile row under loading by 3D finite element method (3D FEM). The study covers the piles with diameter of 0.5 m and 1.5 m, spacing of 3 m and 4.5 m and tunnels having diameter of 2.0 m and 4.45 m. The pile tip elevations and clearances (C) are varied in the analyses. The Metropolitan Waterworks Authority (MWA) tunnel data and properties of Bangkok subsoil are considered in 3D finite element analyse. The analysis results are shown in terms of both safety factor and maximum changes of tunnel diameter. The tunnel influence zone due to nearby pile row under loading is suggested from the findings in this study.