Limits...
Frequency spectrum method-based stress analysis for oil pipelines in earthquake disaster areas.

Wu X, Lu H, Huang K, Wu S, Qiao W - PLoS ONE (2015)

Bottom Line: To date, researchers have performed limited safety analyses of oil pipelines in earthquake disaster areas that include stress analysis.Feasible project enhancement suggestions based on the analysis results are proposed.The designer is able to utilize this stress analysis method to perform an ultimate design for an oil pipeline in earthquake disaster areas; therefore, improving the safe operation of the pipeline.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, China; School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, Sichuan, China.

ABSTRACT
When a long distance oil pipeline crosses an earthquake disaster area, inertial force and strong ground motion can cause the pipeline stress to exceed the failure limit, resulting in bending and deformation failure. To date, researchers have performed limited safety analyses of oil pipelines in earthquake disaster areas that include stress analysis. Therefore, using the spectrum method and theory of one-dimensional beam units, CAESAR II is used to perform a dynamic earthquake analysis for an oil pipeline in the XX earthquake disaster area. This software is used to determine if the displacement and stress of the pipeline meet the standards when subjected to a strong earthquake. After performing the numerical analysis, the primary seismic action axial, longitudinal and horizontal displacement directions and the critical section of the pipeline can be located. Feasible project enhancement suggestions based on the analysis results are proposed. The designer is able to utilize this stress analysis method to perform an ultimate design for an oil pipeline in earthquake disaster areas; therefore, improving the safe operation of the pipeline.

Show MeSH
Design response spectrums.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4334484&req=5

pone.0115299.g002: Design response spectrums.

Mentions: When a design response spectrum is required by this standard and site-specific ground motion procedures are not used, the design response spectrum curve shall be developed as indicated in Fig. 2.


Frequency spectrum method-based stress analysis for oil pipelines in earthquake disaster areas.

Wu X, Lu H, Huang K, Wu S, Qiao W - PLoS ONE (2015)

Design response spectrums.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4334484&req=5

pone.0115299.g002: Design response spectrums.
Mentions: When a design response spectrum is required by this standard and site-specific ground motion procedures are not used, the design response spectrum curve shall be developed as indicated in Fig. 2.

Bottom Line: To date, researchers have performed limited safety analyses of oil pipelines in earthquake disaster areas that include stress analysis.Feasible project enhancement suggestions based on the analysis results are proposed.The designer is able to utilize this stress analysis method to perform an ultimate design for an oil pipeline in earthquake disaster areas; therefore, improving the safe operation of the pipeline.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, China; School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, Sichuan, China.

ABSTRACT
When a long distance oil pipeline crosses an earthquake disaster area, inertial force and strong ground motion can cause the pipeline stress to exceed the failure limit, resulting in bending and deformation failure. To date, researchers have performed limited safety analyses of oil pipelines in earthquake disaster areas that include stress analysis. Therefore, using the spectrum method and theory of one-dimensional beam units, CAESAR II is used to perform a dynamic earthquake analysis for an oil pipeline in the XX earthquake disaster area. This software is used to determine if the displacement and stress of the pipeline meet the standards when subjected to a strong earthquake. After performing the numerical analysis, the primary seismic action axial, longitudinal and horizontal displacement directions and the critical section of the pipeline can be located. Feasible project enhancement suggestions based on the analysis results are proposed. The designer is able to utilize this stress analysis method to perform an ultimate design for an oil pipeline in earthquake disaster areas; therefore, improving the safe operation of the pipeline.

Show MeSH