Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Time effect of vertically loaded piled rafts in layered cross-anisotropic viscoelastic saturated soils
Abstract A boundary element/finite element coupling model is employed to investigate the pile-raft-soil interaction, with considerations of the viscoelasticity and cross-anisotropy of soils. The consolidation solution of layered cross-anisotropic viscoelastic saturated soils is used to establish the boundary integral equations for the soil-raft and soil-pile interfaces. The force-deformation equation of the piles is obtained through the compression theory for a bar, and a flexible plate model is established by using the finite element method (FEM). The displacement variables of the soil-pile interface are eliminated through a matrix operation, and the raft-soil coupling equation is conducted based on the interpolation function in FEM and the displacement continuity condition. Verifications are made to prove the reliability of the presented method. Numerical analysis shows that the time effect of pile-soil-raft interaction is more significant in viscoelastic saturated soils than that in elastic saturated soils. Sensitivity analysis is performed to investigate the impact of soil, pile, and raft parameters on the settlement and load sharing ratio of the piled raft foundation in the time domain.
Time effect of vertically loaded piled rafts in layered cross-anisotropic viscoelastic saturated soils
Abstract A boundary element/finite element coupling model is employed to investigate the pile-raft-soil interaction, with considerations of the viscoelasticity and cross-anisotropy of soils. The consolidation solution of layered cross-anisotropic viscoelastic saturated soils is used to establish the boundary integral equations for the soil-raft and soil-pile interfaces. The force-deformation equation of the piles is obtained through the compression theory for a bar, and a flexible plate model is established by using the finite element method (FEM). The displacement variables of the soil-pile interface are eliminated through a matrix operation, and the raft-soil coupling equation is conducted based on the interpolation function in FEM and the displacement continuity condition. Verifications are made to prove the reliability of the presented method. Numerical analysis shows that the time effect of pile-soil-raft interaction is more significant in viscoelastic saturated soils than that in elastic saturated soils. Sensitivity analysis is performed to investigate the impact of soil, pile, and raft parameters on the settlement and load sharing ratio of the piled raft foundation in the time domain.
Time effect of vertically loaded piled rafts in layered cross-anisotropic viscoelastic saturated soils
Ai, Zhi Yong (Autor:in) / Chu, Zhong Hao (Autor:in) / Cheng, Yi Chong (Autor:in)
03.12.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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Non-linear analysis of vertically loaded piled rafts
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Piled Rafts in Swelling or Consolidating Soils.
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Piled Rafts in Swelling or Consolidating Soils
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