2020
DOI: 10.1061/(asce)st.1943-541x.0002503
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Analytical Nonlinear Rollover Behavior of Cambered Precast Concrete Beams on Flexible Supports

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Cited by 3 publications
(8 citation statements)
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“…Noteworthy is that there exist trials that configure the transitory phase for which the formulation was developed. However, to validate the formula, Krahl et al [13] linearized Equation 10 and compared it to solutions from Mast [1] and Burgoyne and Stratford [6]. The proposed equation presented results very close to those obtained by equations in the literature.…”
Section: Equation For Lateral Instability Due To Rollovermentioning
confidence: 65%
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“…Noteworthy is that there exist trials that configure the transitory phase for which the formulation was developed. However, to validate the formula, Krahl et al [13] linearized Equation 10 and compared it to solutions from Mast [1] and Burgoyne and Stratford [6]. The proposed equation presented results very close to those obtained by equations in the literature.…”
Section: Equation For Lateral Instability Due To Rollovermentioning
confidence: 65%
“…BT-54; BT-63; BT-72 * For each of the three cross-sections of the beam, three cases are analyzed, modifying the dimension of the top flange, with 100% of the standard value; 50% of the standard value; and with length equal to the thickness of the web. Brazilian standards indicate the shear modulus of elasticity or the minimum transverse deformation modulus of 0.80 MPa [19] and 0.85 MPa [20], as such the value of 0.67 MPa was adopted following the studies [10]- [13]. Figure 7 presents the nonlinear curve obtained by Equation 10 for the force values due to the rigid body rotation of the beam.…”
Section: Parametric Analysis Resultsmentioning
confidence: 99%
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“…Este trabalho apresenta soluções analíticas de vigas pré-moldadas apoiadas em elastômeros, considerando a não linearidade de contato entre viga e apoio, desenvolvidas por meio da metodologia de Rayleigh-Ritz. Isto foi feito considerando as situações analisados por Oliveira (2019) e Krahl et al (2019), empregando a mesma metodologia, alterando a consideração do comportamento das almofadas, uma vez que Oliveira (2019) e Krahl et al (2019) consideram a rigidez a rotação do elastômero linear, conforme a formulação de Yazdani et al (2000). Neste trabalho serão aplicadas as considerações de Krahl, Lima e Siqueira (2020) para a relação momento-rotação da almofada não linear, considerando a perda de contato entre viga e apoio, a fim de avaliar a interferência de tal comportamento nas equações de equilíbrio e, consequentemente, na instabilidade de vigas pré-moldadas apoiadas em elastômeros.…”
Section: Método De Rayleigh Ritz Aplicado à Instabilidade Lateral De Vigas Pré-moldadas Apoiadas Em Elastômerosunclassified
“…Importante ressaltar que, como a não linearidade de contato irá interferir apenas na parcela da energia interna referente às molas nos apoios (Equação 3.4), as considerações para o trabalho realizado pelo peso próprio seguem como feito por Krahl et al (2019).…”
Section: Desenvolvimento Das Equações De Equilíbrio Com a Consideração Do Lift-offunclassified