A new finite element model of buried steel pipelines crossing strike-slip faults considering equivalent boundary springs

Zhang, Lisong; Zhao, Xiaomeng; Yan, Xiangzhen; Yang, Xiawei

doi:10.1016/j.engstruct.2016.05.042

Cited by 36 publications

(14 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recent computing and finite element method (FEM) developments can enable numerical treatment approaches that are applicable to the above‐mentioned problem 15 . In existing finite element (FE) models, pipelines are represented using beam, shell, or continuum solid elements, and the soil–pipe interaction is modeled by soil springs, that is, uniaxial nonlinear spring elements, or three‐dimensional inelastic continuum elements 4,16–28 . More recently, Vazouras et al 25 proposed a new hybrid spring‐shell model to decrease the computational cost by substituting the model effect of far distances from the fault plane using equivalent springs with pipe and soil–pipe interaction spring stiffness at both sides of the three‐dimensional FE models.…”

Section: Introductionmentioning

confidence: 99%

A refined nonlinear analytical method for buried pipelines crossing strike‐slip faults

Talebi

Kiyono

2021

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

This paper presents a novel nonlinear governing equation and solution procedure for analyzing a buried pipeline at an active strike‐slip fault crossing. The proposed method includes exact nonlinear axial and nonlinear transverse soil–pipe interaction terms, in addition to geometrical nonlinearity terms in the governing equation. The assumption of partitioning the pipeline into four segments with four governing equations based on the soil yield threshold is removed, and a unified governing equation is introduced. Compared with existing methods, the proposed method has a significantly extended application range with improved accuracy and provides the advantage of including the sliding of buried pipelines within soil, transverse soil spring plasticity, and improved large‐deformation effects including the sliding effect. The solution procedure is improved by removing the optimization steps and external calculations. The proposed method is verified by comparison to a verified finite element‐based model with various fault displacements and angles, and the results are in excellent quantitative and qualitative agreement with the numerical results, even for cases of large fault movement. Finally, criteria for assessing the ovalization damage of buried pipelines are proposed. The proposed method fulfills the missed part of literature, and it is valuable for (1) verification of the nonlinear FEM analysis; (2) fast, economic, and reliable stability analysis and design of buried pipelines; and (3) a strong tool for future developments of buried pipelines seismic design guidelines.

show abstract

Section: Introductionmentioning

confidence: 99%

A refined nonlinear analytical method for buried pipelines crossing strike‐slip faults

Talebi

Kiyono

2021

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…In subsequent publications, Takada et al [4], Karamitros et al [5] and Trifonov et al [6] [7] presented analytical and semi-analytical methodologies for analyzing buried pipelines crossing seismic faults. More recently, together with the development of rigorous finite element models a simplified analytical formulation has been proposed in a series of publications by Vazouras et al [8] [9] [10] and Zhang et al [11] for describing pipeline deformation under strike-slip fault action. In addition to the above research publications, analytical expressions for the response of buried pipelines under permanent ground-induced deformations have been gradually introduced in design provisions of several standards and design recommendations [12], [13] and [14].…”

Section: Introductionmentioning

confidence: 99%

Analytical model for the strain analysis of continuous buried pipelines in geohazard areas

Sarvanis

Karamanos

2017

Engineering Structures

View full text Add to dashboard Cite

In geohazard areas, buried pipelines are subjected to permanent ground-induced deformations, which constitute major threats for their structural safety. Geohazards include seismic fault movement, liquefaction-induced lateral spreading, slope instability or soil subsidence, and are associated with the development of severe strains in the pipeline. Calculation of these strains is necessary for assessing pipeline integrity. In the present paper, an analytical methodology is presented that allows for simple and efficient pipeline strain analysis in geohazard areas. The methodology is compared with existing more elaborate analytical methodologies and finite element predictions. The analytical formulation results in closed form expressions and the model contributes to better understanding of buried pipeline behavior subjected to permanent ground-induced deformations. The proposed methodology is directly applicable to fault actions, but it can be also applicable to a wide range of geohazards. Furthermore, using this methodology, one may predict the strains developed in the pipeline wall due to ground-induced actions in a simple and efficiently manner and is suitable for the preliminary design of pipelines.

show abstract

“…However, the exiting researches shown that the additional stress on the buried pipeline a ected by surface deformation is exactly as a result of the soil-pipeline interaction which may be implemented by the contact modeling [25]. e interaction between the pipeline and its surrounding soil mass is implemented by the contact modeling in this simulation analysis.…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

Additional Stress on a Buried Pipeline under the Influence of Coal Mining Subsidence

Zhang

Lin

et al. 2018

Advances in Civil Engineering

View full text Add to dashboard Cite

Buried pipelines influenced by coal mining subsidence will deform and generate additional stress during surface deformation. On the basis of the coordinating deformation relationship between buried pipeline and its surrounding soils, a stress analysis method of a buried pipeline induced by mining was proposed. e buried pipeline additional stresses were analyzed; meanwhile, a corresponding analysis process of the pipeline stresses was also presented during mining subsidence. Furthermore, based on the ground subsidence along the pipeline predicted in advance by the probability integral method, the additional stresses and Von Mises equivalent stresses and their distributions along the buried pipeline induced by the exploitation of a coal mining working face named 14101 were obtained. Meanwhile, a comparative analysis of additional stresses between simulation and analytical calculation was performed for the deep analysis and reliability of the results presented by the proposed methodology in this paper. e proposed method provides references for analysis of the additional stress and safety of buried pipelines under the influence of mining subsidence.

show abstract

A new finite element model of buried steel pipelines crossing strike-slip faults considering equivalent boundary springs

Cited by 36 publications

References 20 publications

A refined nonlinear analytical method for buried pipelines crossing strike‐slip faults

A refined nonlinear analytical method for buried pipelines crossing strike‐slip faults

Analytical model for the strain analysis of continuous buried pipelines in geohazard areas

Additional Stress on a Buried Pipeline under the Influence of Coal Mining Subsidence

Contact Info

Product

Resources

About