A new proposal for simplified design of buried steel pipes crossing active faults

Takada, Shiro; Hassani, Nemat; Fukuda, Katsumi

doi:10.1002/eqe.62

Cited by 117 publications

(36 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hence, numerous studies have been focused on the numerical and experimental analysis of this issue (i.e. Karamitros et al 2007, Takada et al 2001, Trifonov and Chemity 2010, Vazouras et al 2012, Xie et al 2013). Fortunately, as shows in Fig.…”

Section: Required Hazard Parametersmentioning

confidence: 99%

Seismic risk assessment of the 3rd Azerbaijan gas pipeline in Iran

2014

View full text Add to dashboard Cite

A comprehensive seismic risk assessment has been performed for the existing route of the 3 rd Azerbaijan natural gas buried pipeline in Iran. The major active seismic sources along the pipeline were identified and the geometrical parameters as well as the seismicity rates were determined.The seismic hazard assessment of the ground vibrations along the pipeline was performed in the framework of the Probabilistic Seismic Hazard Analysis using the CRISIS 2007 software. All of the components of the gas pipeline along the route were identified and the corresponding fragility functions are established through the methodology described in the HAZUS guideline. A detailed cost analyses was taken into consideration based on the expert opinions in the National Iranian Gas Company, in order to provide more practical loss model for the pipeline route. Also, a simple method is suggested in order to account for the vent gas in the total loss estimation. The spatial analysis of the hazard function layer in combination with the loss model layer, in Geographical Information System platform, reveal the financial consequences of different earthquake scenarios.

show abstract

Section: Required Hazard Parametersmentioning

confidence: 99%

Seismic risk assessment of the 3rd Azerbaijan gas pipeline in Iran

2014

View full text Add to dashboard Cite

show abstract

“…It was expressed that the most accurate method of modeling is the soil with the solid element and as the mass of soil with regard to the elastoplastic behavior [13]. Takada and Hassani (2001), with the finite element method and a combination of beam and shell for modeling the pipe, presented an equation for maximum strain at the bending of the pipe. The main difference between his works with former researchers is to consider large deformations in the pipe [14].…”

Section: Introductionmentioning

confidence: 99%

“…Takada and Hassani (2001), with the finite element method and a combination of beam and shell for modeling the pipe, presented an equation for maximum strain at the bending of the pipe. The main difference between his works with former researchers is to consider large deformations in the pipe [14]. Karamitros et al (2006), with the beam on elastic foundation theory, obtained equations for calculating strain and nonlinear stress.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Response of Buried Steel Pipelines Subjected to the Strike-slip Fault Displacement

Oghabi

Khoshvatan

Marto³

2017

cej

View full text Add to dashboard Cite

In this paper, the response of buried steel pipeline subjected to the strike-slip fault displacement is studied. This study aimed to identify the seismic fault under the pipe at the intersection of large displacement (up to 3 meter fault displacement) and identify failure modes in the pipe. Innovation studies the effect of thickness ratio of the diameter of the pipe failure modes of the fault displacement. The nonlinear finite element method analysis was conducted. By using ABAQUS software, nonlinear finite element analysis was carried out on the pipeline under fault displacement. Numerical modelling aimed at obtaining the amount of displacement corresponding to the nonlinear behaviour in the pipeline, as well as identifying failure modes pipes in displacement from 0.2 to 3 meter in diameter to thickness ratio, taking into account the impact of the pipeline. The results showed the nonlinear behaviour of the displacement 57.5 cm pipeline damage starts and the displacement of 1 meter buckling occurs in pipes. The displacement of 1 meter fault, failure mode is local buckling pipe, and displacement and deformation of the pipe is 1 meter looks like the letter S. The displacement of 1.5 meter high (3 meter) failure mode tube is wrinkling. And deformation of the pipe in the fault displacement of 1.5 meter, like the letter Z. With the increase in displacement from 1.5 meter to high wrinkling occurs in pipes and up to 3 meter displacement continues. Plastic strain in the fault displacement of 80 cm in diameter to thickness ratio of 112 and 96 occurs, Plastic strain ratio of diameter to thickness of 86 does not occur. Reduction in the diameter of the thickness has a positive impact on reducing plastic strain in the pipe.

show abstract

“…Takada et al [18] noted that the behavior of buried pipelines resembles to that of a shell. According to this and by utilizing the finite element method, they assessed the effect of fault movements on buried pipelines.…”

Section: Introductionmentioning

confidence: 99%