Dynamic Response of Pile Reinforced Soils and Piled Foundations

Messioud, Salah; Okyay, Umur Salih; Sbartai, Badreddine; Dias, Daniel

doi:10.1007/s10706-016-0003-0

Cited by 20 publications

(11 citation statements)

References 15 publications

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“…Yan Jiang et al (2014) conducted a parametric study of a wellmonitored pile-slab-supported embankment for a high-speed railway to investigate the settlement, the load distribution between the soil and the piles, the structural design parameters, and the excess pore pressure. Messioud et al (2016aMessioud et al ( , 2016b) presented a comparison between rigid piles and pile foundations.…”

Section: Pile-slab Structure-supported Embankmentsmentioning

confidence: 99%

“…They found that the settlements of geogridreinforced embankments over piles were 20-30% smaller than conventional pile-supported embankments. Messioud et al (2016aMessioud et al ( , 2016b presented a 3D finiteelement model for the dynamic analysis of a soil-pile slab for identifying the influence of mattress stiffness and the pile-soil contact conditions on the dynamic response of the foundation system. Kim (2009) utilized SLOPILE software to design a piled bridge abutment reinforced by a piled slab at a real site.…”

Section: Pile-slab Structure-supported Embankmentsmentioning

confidence: 99%

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“Effectiveness Of Cfg Pile-Slab Shape On Smooth Soil For Supporting Excessive-Pace Railway Embankment”

Sharma¹

2021

TURCOMAT

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Reducing the settlements of smooth foundation efficiently is a crucial problem of excessive-pace railway creation in China. The new CFG pile-slab structure composite foundation is a floor remedy method that is carried out on CFG pile basis and pile-slab structure composite basis. Based on the revel in of constructing Beijing-Shanghai excessive-pace railway in China, the settlement-controlling effect, the settlement distribution legal guidelines and 3 key influence elements for structural shape of latest CFG pile-slab structural foundation are studied by the use of physical model exams and numerical simulations. The research results on this look at imply that the piles and soil bearing capacities of the new CFG pile-slab shape can be positioned into complete play due to the “load dispensing” function of slabs. The settlement decreasing effect of the new CFG pile-slab shape is first rate and can meet the requirements of high-pace railway creation. The affected location of engineering load has a depth over 18.Seventy five m and horizontal period of 7.Five m nearing the embankment slope toe. The parametric observe presents the optimalizing structural form for high-quality agreement-controlling effect. The bodily version test results display precise concordance with the numerical simulation effects. The mixture of bodily version assessments and numerical simulations justifies the usage of this version in geotechnical engineering practices.

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Section: Pile-slab Structure-supported Embankmentsmentioning

confidence: 99%

Section: Pile-slab Structure-supported Embankmentsmentioning

confidence: 99%

“Effectiveness Of Cfg Pile-Slab Shape On Smooth Soil For Supporting Excessive-Pace Railway Embankment”

Sharma¹

2021

TURCOMAT

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“…Mesh quality is an important factor to determine the accuracy of dynamic calculation. To minimize the distortion wave effect in dynamic analyses, the size of the mesh must be less than the maximum value, which is one-tenth of the wavelength λ [26], as presented in equation 2:…”

Section: Structure Modelmentioning

confidence: 99%

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Fang

Yang

et al. 2019

Complexity

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Current research was not dedicated to investigate the mechanical behavior of a concrete drainage pipe under multiphysical coupling conditions of overburden pressure, traffic loads, groundwater, and pipe fluids. This study proposes a new numerical solution method for coupled stress, seepage, and flow fields based on a validated finite element model. The model was developed by ABAQUS and FLUENT and then solved simultaneously using the MpCCI (mesh-based parallel-code coupling interface) platform. Results show that the tensile stress at the springline and the radial displacement at the crown (or invert) of the bell under the effect of groundwater alone were reduced by 50.5% and 38.1%, respectively, compared to the effect of traffic load alone. Parametric analyses show that vehicle speed and fluid height have a slight impact on the pipes. The soil cover depth, wheel pressure, and gasket strength are directly proportional to the pipe stress and vertical displacement. Within the scope of their respective changes, the pipe stresses were increased by 34.4%, 36.7%, and 28.5%, and the vertical displacements were increased by 124%, 95.85%, and 87.7%. The bedding and backfill strengths are proportional to the pipe stress and inversely proportional to the vertical displacement. Within the scope of their respective changes, the pipe stresses were increased by 18.2% and 20.0%, and the vertical displacements were decreased by 11.4% and 10.4%. Sensitivity analyses show that soil cover depth has a greatest impact on the pipe, followed by traffic load.

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“…However, simple constitutive models were often applied for soils, which led to under-or overestimations of the results. The embankments and soft soils were often modelled using linear elasticity or linear elastic with perfectly plastic models combined with damping characteristics [4,[12][13][14][15]. As a result, the cumulated settlements and stress degradation on piles were not clearly illustrated.…”

Section: Introductionmentioning

confidence: 99%

3D Numerical Modeling of Rigid Inclusion-Improved Soft Soils Under Monotonic and Cyclic Loading—Case of a Small-Scale Laboratory Experiment

Phạm

Dias

2021

Applied Sciences

Self Cite

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This paper is based on small-scale laboratory tests (1:10) of a rigid inclusion-improved soil under normal gravity. A low area improvement ratio (2.4%) under monotonic and cyclic loading was used. 3D numerical calculations are performed to model these tests. The proposed numerical modeling is performed by the finite element method (FEM) using the ABAQUS software. A representative elementary volume model is suggested for reducing the calculation time. A hypoplastic constitutive model (HYP model) is applied for the load transfer platform (LTP). A total of three geometrical configuration cases of the experimental tests are numerically considered including a rigid slab over a mattress of 100 mm on the reinforced soil, a mattress of 100 mm on the reinforced soil, and a rigid slab over a mattress of 50 mm on the reinforced soil. The proposed numerical results are compared to the experimental data and the previous numerical results of Houda. The cyclic response of the systems is shown in terms of soil arching and settlements. The decrease in pile efficacy and the cumulative settlements are exhibited. The HYP model allows to better simulate the soil arching mechanisms inside the LTP than the CYsoil model used in the Houda’s research work. A good concordance between the proposed numerical results and the experimental data was obtained.

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Dynamic Response of Pile Reinforced Soils and Piled Foundations

Cited by 20 publications

References 15 publications

“Effectiveness Of Cfg Pile-Slab Shape On Smooth Soil For Supporting Excessive-Pace Railway Embankment”

“Effectiveness Of Cfg Pile-Slab Shape On Smooth Soil For Supporting Excessive-Pace Railway Embankment”

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

3D Numerical Modeling of Rigid Inclusion-Improved Soft Soils Under Monotonic and Cyclic Loading—Case of a Small-Scale Laboratory Experiment

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