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    A numerical approach on side resistance of drilled shafts embedded in sandy soils

    , Article International Journal of Geotechnical Engineering ; 2019 ; 19386362 (ISSN) Jazebi, M ; Ahmadi, M. M ; Sharif University of Technology
    Taylor and Francis Ltd  2019
    Abstract
    This study numerically investigates the side resistance of drilled shafts (bored piles) in sand using FLAC2D computer program. The results of the equations available in the literature are compared with the results of the present numerical study. A series of analyses is also conducted to assess the effects of various soil and pile parameters on the magnitude of side resistance of bored piles embedded in sand. Furthermore, the coupling (combined) effect of coefficient of lateral earth pressure with friction angle, and the coefficient of lateral earth pressure with a unit weight of soil on side resistance are investigated. The results show that the maximum effect of K0 on side resistance occurs... 

    A numerical approach on side resistance of drilled shafts embedded in sandy soils

    , Article International Journal of Geotechnical Engineering ; 2019 ; 19386362 (ISSN) Jazebi, M ; Ahmadi, M. M ; Sharif University of Technology
    Taylor and Francis Ltd  2019
    Abstract
    This study numerically investigates the side resistance of drilled shafts (bored piles) in sand using FLAC2D computer program. The results of the equations available in the literature are compared with the results of the present numerical study. A series of analyses is also conducted to assess the effects of various soil and pile parameters on the magnitude of side resistance of bored piles embedded in sand. Furthermore, the coupling (combined) effect of coefficient of lateral earth pressure with friction angle, and the coefficient of lateral earth pressure with a unit weight of soil on side resistance are investigated. The results show that the maximum effect of K0 on side resistance occurs... 

    A numerical approach on side resistance of drilled shafts embedded in sandy soils

    , Article International Journal of Geotechnical Engineering ; Volume 14, Issue 6 , 2020 , Pages 644-652 Jazebi, M ; Ahmadi, M. M ; Sharif University of Technology
    Taylor and Francis Ltd  2020
    Abstract
    This study numerically investigates the side resistance of drilled shafts (bored piles) in sand using FLAC2D computer program. The results of the equations available in the literature are compared with the results of the present numerical study. A series of analyses is also conducted to assess the effects of various soil and pile parameters on the magnitude of side resistance of bored piles embedded in sand. Furthermore, the coupling (combined) effect of coefficient of lateral earth pressure with friction angle, and the coefficient of lateral earth pressure with a unit weight of soil on side resistance are investigated. The results show that the maximum effect of K0 on side resistance occurs... 

    Simultaneous separation of H2S and CO2 from natural gas by hollow fiber membrane contactor using mixture of alkanolamines

    , Article Journal of Membrane Science ; Volume 377, Issue 1-2 , July , 2011 , Pages 191-197 ; 03767388 (ISSN) Hedayat, M ; Soltanieh, M ; Mousavi, S. A ; Sharif University of Technology
    2011
    Abstract
    In the present work we studied the use of a membrane contactor system for simultaneous absorption of H2S and CO2 from a gas mixture similar to natural gas. MDEA solution and mixtures of MDEA/DEA and MDEA/MEA were used as absorbent liquid. PVDF and PSf hollow fiber membranes were used in the membrane contactor modules. Design of experiments were carried out by Taguchi method in a manner that a systematical investigation of the effect of operational parameters (temperature, pressure, gas and liquid flow rates, absorbent concentration and acid gas content of the feed), in addition to the effect of membrane material and absorbent liquid, was implemented on process performance parameters...