Improvements to G4(RW) strong-post round-wood, W-beam guardrail system

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dc.authoridAtahan, Ali/0000-0002-4800-4022
dc.contributor.authorAtahan, AO
dc.contributor.authorCansiz, ÖF
dc.date.accessioned2024-09-18T21:05:06Z
dc.date.available2024-09-18T21:05:06Z
dc.date.issued2005
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractStrong-post round-wood W-beam guardrail, G4(RW), is a common longitudinal barrier used in Texas. Recent crash tests on the system demonstrate its effectiveness in containing and redirecting a 2,000-kg pickup truck. Even though the guardrail performed satisfactorily according to National Cooperative Highway Research Program Report 350 requirements, there were concerns about the stability of the vehicle due to excessive wheel snagging on the posts. In this study, a modification to the existing design is evaluated to improve the stability of an impacting vehicle. LS-DYNA, a dynamic, nonlinear, large deformation finite element modeling code is used to analyze and compare the performance of alternate designs. A baseline finite element model of the existing system is developed to replicate the observed crash test behavior of the G4(RW). The fidelity of the baseline model is verified against full-scale crash test results. To improve the vehicle stability, the current design was modified to include guardrail posts with shorter embedment depth. An optimum post embedment depth was determined and used in the second simulation study. Finite element analysis results show that an improved G4(RW) system eliminates wheel snagging on posts, reduces sudden vehicle deceleration and therefore improves the stability of an impacting vehicle significantly.en_US
dc.identifier.doi10.1061/(ASCE)0733-947X(2005)131:1(63)
dc.identifier.endpage73en_US
dc.identifier.issn0733-947X
dc.identifier.issn1943-5436
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-11944270088en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage63en_US
dc.identifier.urihttps://doi.org/10.1061/(ASCE)0733-947X(2005)131:1(63)
dc.identifier.urihttps://hdl.handle.net/20.500.12483/13359
dc.identifier.volume131en_US
dc.identifier.wosWOS:000225804200008en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAsce-Amer Soc Civil Engineersen_US
dc.relation.ispartofJournal of Transportation Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleImprovements to G4(RW) strong-post round-wood, W-beam guardrail systemen_US
dc.typeArticleen_US

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