Behavior of Flexible Buried Pipes Under Geocell Reinforced Subbase Subjected to Repeated Loading

IF 0.5 Q4 ENGINEERING, GEOLOGICAL

International Journal of Geotechnical Earthquake Engineering Pub Date : 2018-01-01 DOI:10.4018/IJGEE.2018010102

M. Fattah, W. Hassan, Sajjad E. Rasheed

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引用次数: 23

Abstract

ThepresentarticleconstitutesanexperimentalinvestigationofthebehaviorofburiedPVCpipes.A numberoflaboratoryexperimentswereconductedusingPVCpipeswhichwereburiedinamedium sandlayer,belowasubbaselayer,reinforcedwithgeocells.Theyweresubjecttorepeateddynamic loadamplitudesof0.5and1tonandloadingfrequenciesof0.5,1and2Hz,tostudytheeffectsof thegeocellreinforcementlayer,intermsoftheamountofstressreachingthepipecrownandthe vibrationofthepipe.A3Dnumericalmodelwasalsodevelopedtoinvestigatetheperformanceofthe geocellabovetheburiedpipe.Thepredictedcharacteristicsoftheburiedpipeswerevalidatedusing theexperimentaldata.Theresultsshowedthatgeocellreinforcementdecreasesbothcrownvibration by35%,andtheverticalpressurereachingthepipeby41%.Thenumericalmodelshaveagoodfit withtheexperimentalworkresults,bothconfirmingthatgeocellreinforcementhasasignificantrole toplayregardingincreasingthesafetyofpipes. KEywoRdS Dynamic Loading, Finite Element, Geocell-Reinforcement, PLAXIS 3D, PVC Pipe, Subbase Layer

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土工格室加筋底下挠性埋管在重复荷载作用下的性能

ThepresentarticleconstitutesanexperimentalinvestigationofthebehaviorofburiedPVCpipes。A numberoflaboratoryexperimentswereconductedusingPVCpipeswhichwereburiedinamedium sandlayer，belowasubbaselayer，reinforcedwithgeocells。Theyweresubjecttorepeateddynamic loadamplitudesof0.5and1tonandloadingfrequenciesof0.5，1and2Hz，tostudytheeffectsof thegeocellreinforcementlayer，intermsoftheamountofstressreachingthepipecrownandthe vibrationofthepipe。A3Dnumericalmodelwasalsodevelopedtoinvestigatetheperformanceofthe geocellabovetheburiedpipe。Thepredictedcharacteristicsoftheburiedpipeswerevalidatedusing theexperimentaldata。Theresultsshowedthatgeocellreinforcementdecreasesbothcrownvibration by35%，andtheverticalpressurereachingthepipeby41%。Thenumericalmodelshaveagoodfit withtheexperimentalworkresults，bothconfirmingthatgeocellreinforcementhasasignificantrole toplayregardingincreasingthesafetyofpipes。关键词:动力载荷，有限元，土工格室加固，PLAXIS 3D, PVC管，亚基层

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来源期刊

International Journal of Geotechnical Earthquake Engineering ENGINEERING, GEOLOGICAL-

CiteScore

1.90

自引率

25.00%

发文量