Random Seismic Analysis of Multi-Supported Pipelines Subjected to Spatially Varying Ground Motions

LI Yu-yin; ZHANG Ya-hui

doi:10.3879/j.issn.1000-0887.2015.06.002

Volume 36 Issue 6

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LI Yu-yin, ZHANG Ya-hui. Random Seismic Analysis of Multi-Supported Pipelines Subjected to Spatially Varying Ground Motions[J]. Applied Mathematics and Mechanics, 2015, 36(6): 582-592. doi: 10.3879/j.issn.1000-0887.2015.06.002

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Random Seismic Analysis of Multi-Supported Pipelines Subjected to Spatially Varying Ground Motions

doi: 10.3879/j.issn.1000-0887.2015.06.002

State Key Laboratory of Structural Analysis for Industrial Equipment(Dalian University of Technology), Dalian, Liaoning 116024, P.R.China

Funds: The National Science Foundation of China (11172056); The National Basic Research Program of China(973 Program)(2014CB046803)

Received Date: 2015-03-16
Rev Recd Date: 2015-03-17
Publish Date: 2015-06-15

Abstract

Abstract

An analytical method was formulated for the random seismic analysis of multi-supported pipelines subjected to spatially varying ground motions. With the pseudo-excitation method, the stationary random seismic responses were proven to be represented in terms of deterministic responses of pipelines under multi-support harmonic excitations. The harmonic responses were expressed as a series of harmonic functions with undetermined coefficients, which could be solved with the appropriate boundary and compatibility conditions. In comparison with the quasi-static decomposition method, the present method is derived analytically without computation of the structural normal modes and quasi-static components. The high accuracy and efficiency of the present method is verified through its application to an exemplary 6-span pipeline and the comparison of results made with those from the quasi-static decomposition method.
- spatially varying ground motion,
- multi-supported pipeline,
- analytical method,
- quasi-static decomposition

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References(20)

References

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