Comparison of 3D Solid and Beam–Spring FE Modeling Approaches in the Evaluation of Buried Pipeline Behavior at a Strike-Slip Fault Crossing

Talebi, Farzad; Kiyono, Junji

doi:10.3390/en14154539

Cited by 6 publications

(4 citation statements)

References 26 publications

(42 reference statements)

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“…Considering Equation (7), the soil resistance ratio per unit length can be rewritten in the form below: . Figure 5 shows the relationship between γ 1 and γ 2 in Equation (11).…”

Section: Determination Of the Bend Length Ratiomentioning

confidence: 99%

“…[5][6][7][8] Moreover, Paolucci et al 9 derived a simple analytical solution of pipeline strain under fault based on the minimum total dissipated energy during fracture. Recently, Talebi and Kiyono 10,11 revised the governing equations and improved the strain calculation accuracy by considering nonlinear problems and axial pipe-soil interactions. Hu et al 12 studied the moment-strain correlation by dividing large deformations into infinitesimal displacements and proposed an improved method to calculate strain.…”

Section: Introductionmentioning

confidence: 99%

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A new analytical method for calculating the strain of oil and gas pipeline under a normal fault dislocation

et al. 2022

Energy Science & Engineering

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Oil and gas pipelines that go through an active normal fault often deform largely and cause serious disasters. On the basis of the beam theory of the elastic foundation and assuming a shape function for the deformed pipeline, a new analytical method is proposed to calculate the pipeline strain under a normal fault. The length of the deformed pipeline is calculated by using a simplified structural mechanical model. Moreover, a three-dimensional solid finite element model (3D FEM) is developed to calculate the pipeline strain under different working conditions. The developed analytical solution and the numerical results of 3D FEM are compared with the results of the two traditional methods (the dissipated energy method and the Karamitros method). The strain development law predicted by the proposed method and the 3D FEM is in good agreement with that of the dissipated energy method and the Karamitros method. Compared with the existing models, the new analytical method is simpler and more efficient.

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“…Considering Equation (7), the soil resistance ratio per unit length can be rewritten in the form below: . Figure 5 shows the relationship between γ 1 and γ 2 in Equation (11).…”

Section: Determination Of the Bend Length Ratiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new analytical method for calculating the strain of oil and gas pipeline under a normal fault dislocation

et al. 2022

Energy Science & Engineering

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“…Owing to their own weight, the middle section of the pipeline was the most dangerous part under the influence of the landslide load. Farzad Talebi and Junji Kiyono [ 10 ] used validated 3D solid finite element (FE) models to acquire an accurate sense of the performance of buried pipelines at earthquake faults. The authors improved the modeling techniques in the beam–spring FE modeling approach for the reproduction of the realistic performance of buried pipelines, and determined an appropriate damage criterion for buried pipelines in beam–spring FE models.…”

Section: Introductionmentioning

confidence: 99%

Study on Mechanical Failure Behavior of Steel-Wire Wound Reinforced Thermoplastic Pipe under Combined Internal Pressure and Soil Landslide Conditions

Shi

Zeng

et al. 2023

Materials

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A steel-wire wound reinforced thermoplastic pipe (SWW-RTP) has been widely utilized in many industrial areas, and a soil landslide is an inevitable hazardous extreme condition for the SWW-RTP as it is usually buried underground. It is imperative to study the mechanical failure behavior and the failure criterion of the SWW-RTP under the combination of internal pressure and soil landslide conditions, and this paper is the first study to investigate the topic. In this paper, groups of stress–strain curves of high-density polyethylene (HDPE) and steel wires were obtained by uniaxial tensile tests at different strain rates, with the help of a Digital Image Correlation device (DIC). A rate-dependent constitutive model was employed to represent the mechanical behavior of the HDPE and to help deduce the stress–strain curve of the HDPE under the required strain rate, estimated from the static simplification of the dynamic soil landslide. Afterwards, a finite element model of the SWW-RTP, embedded in a cubic of soil, was established with the software ABAQUS. The SWW-RTP model was composed of HDPE solid elements, embedded with steel-wire truss elements, and the soil was characterized with the extended Drucker–Prager model. A quartic polynomial displacement distribution was applied to the soil model to represent the soil landslide. Then, the mechanical response of the SWW-RTP was analyzed. It was found that the failure criterion of the HDPE yield was more suitable for the pipe subjected to internal pressure and soil landslide conditions, instead of the steel-wire strength failure criterion always used in traditional research on the SWW-RTP. Further, the influence of landslide width, internal pressure and steel-wire number were discussed. The larger the width of the landslide area, the gentler the deformation of the pipeline ; this resulted in an increase in the maximum landslide and a decrease in the maximum curvature with the width of the landslide area. The relatively high internal pressure was beneficial to the safety of the SWW-RTP under landslide, because the internal pressure could increase the stiffness of the pipeline. The number of steel wires had a limited influence on the maximum landslide required for the SWW-RTP’s failure. This work can be useful for the design and safe assessment of the SWW-RTP under internal pressure and soil landslide conditions.

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“…At the same time, a model was also established to analyze the stress of the NGTP, and the stress distributions of the NGTP were acquired in different conditions ( 12 , 14 ). In addition, in the Talebi and Kiyono’s ( 15 ) work, after the verification of FEMs by pull-out and lateral sliding tests, NGTP performance was evaluated with nonlinear beam–spring FEMs and nonlinear three-dimensional (3D) solid FEMs. Trifonov and Cherniy ( 16 ) presented an analytical model for the stress–strain analysis of a NGTP, accounting for internal pressure and temperature variation.…”

mentioning

confidence: 99%

Numerical Investigation of the Strain Characteristics of a Natural Gas Transportation Pipeline Crossing Tunnel

Ding

et al. 2022

Transportation Research Record: Journal of the Transportation R

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To ensure the safe operation of a natural gas transportation pipeline (NGTP) crossing tunnel, a model is established to analyze the strain characteristics. Some factors affecting the strain are considered in this paper. The results show that the strain failure of a NGTP crossing tunnel may occur in the two elbows of the NGTP located at the tunnel entrance and the position in contact with the fixed pipe clamp near the tunnel entrance. At the same time, the strain of the NGTP crossing tunnel is obviously affected by the temperature change of natural gas. So, the temperature change should be controlled within 8 K in the actual operation process. The wall thickness, the length of the NGTP, and the slope angle of the crossing tunnel are also main factors to affect the strain of the NGTP crossing tunnel, while the operation pressure and mountain slope angle have little effect when the operation pressure is 6–11 MPa. The maximum value of Mises equivalent strain is also obviously affected by the pipe diameter when it is more than 273 mm. Meanwhile, a prediction model for the maximum value of Mises equivalent strain is also established by the nonlinear fitting method and the deviation is within ±15% between the calculations and simulation results. The above conclusions will provide a theoretical basis and data support for the safe operation and design of NGTP crossing tunnels.

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Comparison of 3D Solid and Beam–Spring FE Modeling Approaches in the Evaluation of Buried Pipeline Behavior at a Strike-Slip Fault Crossing

Cited by 6 publications

References 26 publications

A new analytical method for calculating the strain of oil and gas pipeline under a normal fault dislocation

A new analytical method for calculating the strain of oil and gas pipeline under a normal fault dislocation

Study on Mechanical Failure Behavior of Steel-Wire Wound Reinforced Thermoplastic Pipe under Combined Internal Pressure and Soil Landslide Conditions

Numerical Investigation of the Strain Characteristics of a Natural Gas Transportation Pipeline Crossing Tunnel

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