Investigation of Lateral Stability of UHPC Beams Supported by Bearing Pads Considering the Nonlinear Lift-Off Effect

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dc.contributor.authorCosta L.O.
dc.contributor.authorKrahl P.A.
dc.contributor.authorDe Lima M.C.V.
dc.date.accessioned2025-04-01T06:55:51Z
dc.date.available2025-04-01T06:55:51Z
dc.date.issued2023
dc.description.abstract© 2022 American Society of Civil Engineers.Ultrahigh-performance concrete (UHPC) is an advanced cement-based material with a compressive strength greater than 150 MPa. The application of UHPC on prestressed girders allows the design of very long spans with thin sections. However, the increased slenderness, low lateral flexural stiffness, flexible supports, and beam imperfections make lateral instability critical. Therefore, this paper presents an analytical prediction of precast beams' behaviors considering the nonlinear contact interaction with the bearing pads. The nonlinear geometric theory for the slender element is coupled with the nonlinear contact mechanism developed between the beam and pad through the energy approach. The proposed solutions are compared with the equations available in the literature that consider the linear stiffness contact interaction. Changes in the limit load of up to 84% were a result of the lift-off effect (contact interaction). From the results, the UHPC is highly sensitive to lateral instability, giving a maximum load/dead weight ratio of up to 1.08 where the common technical recommendation is greater than four.
dc.description.issuenumber3
dc.description.volume149
dc.identifier.doi10.1061/JSENDH.STENG-10896
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/40468
dc.relation.ispartofJournal of Structural Engineering (United States)
dc.rightsAcesso Restrito
dc.subject.otherlanguageElastomeric pads
dc.subject.otherlanguageLateral instability
dc.subject.otherlanguageNonlinear lift-off effect
dc.subject.otherlanguagePrecast beams
dc.subject.otherlanguageUltrahigh-performance concrete (UHPC)
dc.titleInvestigation of Lateral Stability of UHPC Beams Supported by Bearing Pads Considering the Nonlinear Lift-Off Effect
dc.typeArtigo
local.scopus.citations0
local.scopus.eid2-s2.0-85144598689
local.scopus.subjectContact interaction
local.scopus.subjectElastomeric pads
local.scopus.subjectLateral instability
local.scopus.subjectLateral stability
local.scopus.subjectLift-off effect
local.scopus.subjectNonlinear contact
local.scopus.subjectNonlinear lift-off effect
local.scopus.subjectPrecast beams
local.scopus.subjectUltra high performance concretes (UHPC)
local.scopus.subjectUltrahigh-performance concrete
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85144598689&origin=inward
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