000011406 001__ 11406
000011406 005__ 20141205155907.0
000011406 04107 $$aeng
000011406 046__ $$k2008-10-12
000011406 100__ $$aRahimzade Rofooei, Fayaz
000011406 24500 $$aA Parametric Study on Seismic Behavior of Continuous Buried Pipelines Due to Wave Propagation

000011406 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011406 260__ $$b
000011406 506__ $$arestricted
000011406 520__ $$2eng$$aA T Due to their efficiency, buried pipe D r elines are be eing widely used to tran nsfer water, crude oil an other nd petrochemica liquid produ in large q p al ucts quantities and far distance Since grou displacem can cause serious d es. und ment e damages to t these facilitie it is neces es, ssary to inve estigate the seismic behav vior of the bu uried pipeline under es severe earthq quakes. In tha regard, attempts have be made for mathematica modeling o the buried p at een al of pipelines to capture the true respon under ear t eir nse rthquake exci itations. Using the concept of beams on elastic foundation, a t n number of 3-D finite elem models ar prepared fo a portion of a continuou pipeline system. In these models, n ment re or o us e the slippage b t between the surrounding so and the pipe is observe by means o nonlinear elastoplastic sp s oil ed of prings in three orthogonal directio t ons. Nonlinea dynamic time history analyses h ar y have been ca arried out using the displacement time history of the stron ground mo t y ng otions in thre normal dir ee rections as an input. An e n extensive parametric study is perf p formed to in nvestigate the seismic be e ehavior of the system, considering different parameters such as pipe's diameter and modulus of elasticity the burial depth, intern pressure, and the p a y, nal surrounding soil type. Al lso, the seism behavior of the buried pipelines w bends is studied, con mic d with s nsidering different bend angles and distance to th bend param d he meter. As the results indicate, the induc axial and bending ced stresses to th straight b he buried pipelin in sever earthquake are much less than pipelines with bends. nes re es p h Furthermore, increasing th bend angle will lead to l F he e larger stress concentration around the bend area. c KEYWORD Pipelines, Ground Disp K DS: placement, sli ippage, Nonli inear Dynami Analysis ic

000011406 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011406 653__ $$a

000011406 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011406 720__ $$aRahimzade Rofooei, Fayaz$$iQorbani, Rahim
000011406 8560_ $$ffischerc@itam.cas.cz
000011406 8564_ $$s1915230$$uhttps://invenio.itam.cas.cz/record/11406/files/06-0071.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 06-0071.
000011406 962__ $$r9324
000011406 980__ $$aPAPER