Seismic vulnerability assessment of extradosed bridges during cantilever construction

Authors

  • José Miguel Benjumea Royero Universidad Industrial de Santander, Bucaramanga. (COLOMBIA)
  • Gustavo Chio Cho Universidad Industrial de Santander, Bucaramanga. (COLOMBIA)

DOI:

https://doi.org/10.4067/S0718-50732013000200002

Keywords:

Extradosed bridges, seismic vulnerability, construction, cantilever, annual exceedance probability

Abstract

This paper presents the study of seismic vulnerability of extradosed bridges during cantilever construction. The seismic response during six construction phases and two in service, before and after creep and shrinkage of concrete takes place, of a 3-span extradosed bridge (60 + 100 + 60 m) were determined by means of finite elements models. Using the approach proposed by Wilson and Holmes (2007), seismic response during construction and in service were compared to determine structural elements with higher vulnerability and to detect critical stages during construction. The results show that the seismic vulnerability of the bridge during construction is higher than in service, this is supported on the fact that during construction annual exceedance probabilities are higher than 0.21%, a commonly adopted value for the seismic design of bridges. Furthermore, it was found that extradosed cables and the towers are the most vulnerable elements and that the stages before the closure of the bridge during construction are the most critical.

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Published

2013-08-30

How to Cite

Benjumea Royero, J. M., & Chio Cho, G. (2013). Seismic vulnerability assessment of extradosed bridges during cantilever construction. Revista Ingeniería De Construcción, 28(2), 125–139. https://doi.org/10.4067/S0718-50732013000200002

Issue

Section

Original Research