Numerical behaviour of buried flexible pipes in geogrid-reinforced soil under cyclic loading

Elshesheny, Ahmed; Mohamed, Mostafa; Nagy, Nabil M.; Sheehan, Therese

doi:10.1016/j.compgeo.2020.103493

Cited by 17 publications

(4 citation statements)

References 28 publications

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“…One of the most important advantages of finite element package ABAQUS is its durability in the numerical approach for resolving soil nonlinearity [9][10][11][12]. So, in this study (ABAQUS/ CAE 2017) was used to investigate SC influence in improving weak soils.…”

Section: Numerical Analysismentioning

confidence: 99%

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Enhancing airport runways performance using composite systems numerically using unit cell concept.

Abdelaziz,

Elshesheny,

Abdelmotaal

et al. 2023

J. Phys.: Conf. Ser.

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One of the problems, which would affect airport runways is the settlement of soil. Such settlement would be controlled by enhancing the performance of the soil underneath the airport runway. The composite system consists of graded stone-reinforced soil and reinforcing layers. This system is defined as stone column, which is widely used to improve weak soils as one of the soil stabilization methods due to its simple construction and economic cost. It is used to reduce settlement and enhance soil-bearing capacity. By using such technique, part of the high-compressibility and low-shear strength soil is replaced with coarse filler materials with high-shear strength and extremely low compressibility. In this study, a 3D numerical model of a unit cell is created to examine the impact of changing the controlling parameters in the model, i.e. spacing between columns (S), weak soil cohesion (c), and angle of internal friction for stone column material (φ). It was established that the use of stone columns improves the soil-bearing capacity and reduces settlement, strengthening the stability of airport runways. The efficiency of the system is improved by increasing the column material’s internal friction angle and the cohesion of the surrounding soil. The ultimate bearing capacity of soil without SC and SC-soil systems were 150 kPa, and 460 kPa, respectively, which illustrates that the bearing capacity was increased by 306.7%.

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Section: Numerical Analysismentioning

confidence: 99%

“…Sensitivity analysis for mesh size was performed until reaching the optimum mesh size. The optimum mesh was selected where the accuracy of the results was almost constant while reducing the element size [12].…”

Section: Meshingmentioning

confidence: 99%

Enhancing airport runways performance using composite systems numerically using unit cell concept.

Abdelaziz,

Elshesheny,

Abdelmotaal

et al. 2023

J. Phys.: Conf. Ser.

Self Cite

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“…Although 3-D 𝜎 𝑛 = 0.5𝛾′𝐻(1 + 𝐾 0 ) 1a 1b 𝐹 = (𝜋𝐷)𝜎 𝑛 𝑡𝑎𝑛 𝛿 continuum modelling can capture advanced SPI, the high computational cost and the need for advanced constitutive models limit its applicability for routine design practice (e.g. Vazouras et al 2010, 2015, Rajeev and Kodikara 2011, Saberi et al 2015, Sarvanis et al 2018, Psyrras et al 2019, Tsinidis et al 2020, Elshesheny et al 2020.…”

Section: Introductionmentioning

confidence: 99%

An efficient numerical approach for simulating soil-pipe interaction behaviour under cyclic loading

Saberi

Annan

Sheil

2022

Computers and Geotechnics

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“…Fei et al 17 studied the time-dependent performance of steel-reinforced HDPE (SRHDPE) pipes and developed an empirical relationship between vertical arching factor and the equivalent stiffness coefficient. Elshesheny et al 18 used three-dimensional finite element models to investigate the numerical behavior of buried flexible HDPE pipes in sand beds under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

Tang

et al. 2021

Energy Science & Engineering

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Numerical behaviour of buried flexible pipes in geogrid-reinforced soil under cyclic loading

Cited by 17 publications

References 28 publications

Enhancing airport runways performance using composite systems numerically using unit cell concept.

Enhancing airport runways performance using composite systems numerically using unit cell concept.

An efficient numerical approach for simulating soil-pipe interaction behaviour under cyclic loading

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

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