Mechanics of Cable-Suspended Beams

The cable-suspended bridges differ from the elastic structures because of the inherent nonlinearity of the suspension cables. The primary focus of the available theories is to investigate the effect of nonlinearities associated with the distributed self-weight of the cable and its finite elastic dis...

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Bibliographic Details
Published inLatin American Journal of Solids and Structures Vol. 14; no. 3; pp. 544 - 559
Main Authors Kumar, Pankaj, Ganguli, Abhijit, Benipal, Gurmail S.
Format Journal Article
LanguageEnglish
Published Latin American Journal of Solids and Structures 01.03.2017
Associação Brasileira de Ciências Mecânicas
Marcílio Alves
Subjects
cable-deck interaction
configurational response
ENGINEERING, CIVIL
ENGINEERING, MECHANICAL
Finite element method
flexural-torsional vibrations
Mechanical properties
MECHANICS
Methods
rate-type constitutive equations
Structural analysis (Engineering)
Suspension bridges
Testing
third order differential equation of motion
rate-type constitutive equations
configurational response
Suspension bridges
cable-deck interaction
third order differential equation of motion
flexural-torsional vibrations
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Summary:The cable-suspended bridges differ from the elastic structures because of the inherent nonlinearity of the suspension cables. The primary focus of the available theories is to investigate the effect of nonlinearities associated with the distributed self-weight of the cable and its finite elastic displacements. The main point of departure of this paper is to study the effect of the configurational non-linearity of the weightless linear elastic suspension cables undergoing small elastic displacements. Based upon authors' theory of weightless elasto-flexible planar sagging cables, a new Beam with Elasto-Flexible Support (BEFS) model of the cable-deck interaction is proposed here. Rate-type constitutive equations and third order differential equations of motion are derived for a simple four-node cable-suspended beam structure undergoing small elastic vertical displacements. Static and dynamic analysis of the cable-suspended structures is carried out to reveal their characteristic configurational response. The proposed theory is critically evaluated in the context of existing theories of suspension bridges.
ISSN:1679-7825
1679-7817
1679-7825
DOI:10.1590/1679-78253259