Structural Engineering and Mechanics

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Numerical simulation of the constructive steps of a cable-stayed bridge using ANSYS

  • Lazzari, Paula M. (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Filho, Americo Campos (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Lazzari, Bruna M. (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Pacheco, Alexandre R. (Civil Engineering Graduate Program, Federal University of Rio Grande do Sul) ;
  • Gomes, Renan R.S. (Civil Engineering Graduate Program, Federal University of Rio de Janeiro)
  • Received : 2018.01.23
  • Accepted : 2018.05.21
  • Published : 2019.02.10
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Abstract

This work addresses a three-dimensional nonlinear structural analysis of the constructive phases of a cable-stayed segmental concrete bridge using The Finite Element Method through ANSYS, version 14.5. New subroutines have been added to ANSYS via its UPF customization tool to implement viscoelastoplastic constitutive equations with cracking capability to model concrete's structural behavior. This numerical implementation allowed the use of three-dimensional twenty-node quadratic elements (SOLID186) with the Element-Embedded Rebar model option (REINF264), conducting to a fast and efficient solution. These advantages are of fundamental importance when large structures, such as bridges, are modeled, since an increasing number of finite elements is demanded. After validating the subroutines, the bridge located in Rio de Janeiro, Brazil, and known as "Ponte do Saber" (Bridge of Knowledge, in Portuguese), has been numerically modeled, simulating each of the constructive phases of the bridge. Additionally, the data obtained numerically is compared with the field data collected from monitoring conducted during the construction of the bridge, showing good agreement.

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References

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