DOI QR코드

DOI QR Code

Finite element modeling of a deteriorated R.C. slab bridge: lessons learned and recommendations

  • Ho, I-Kang (CICI Corporation) ;
  • Shahrooz, Bahram M. (Department of Civil & Environmental Engineering, University of Cincinnati)
  • 발행 : 1998.04.25

초록

The test results from non-destructive and destructive field testing of a three-span deteriorated reinforced concrete slab bridge are used as a vehicle to examine the reliability of available tools for finite-element analysis of in-situ structures. Issues related to geometric modeling of members and connections, material models, and failure criteria are discussed. The results indicate that current material models and failure criteria are adequate, although lack of inelastic out-of-plane shear response in most nonlinear shell elements is a major shortcoming that needs to be resolved. With proper geometric modeling, it is possible to adequately correlate the measured global, regional, and local responses at all limit states. However, modeling of less understood mechanisms, such as slab-abutment connections, may need to be finalized through a system identification technique. In absence of the experimental data necessary for this purpose, upper and lower bounds of only global responses can be computed reliably. The studies reaffirm that success of finite-element models has to be assessed collectively with reference to all responses and not just a few global measurements.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation

참고문헌

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피인용 문헌

  1. Ultimate Flexural Capacity of a Severely Damaged Reinforced Concrete T-Girder Bridge vol.22, pp.5, 2017, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001027
  2. Finite element failure analysis of reinforced concrete T-girder bridges vol.24, pp.2, 2002, https://doi.org/10.1016/S0141-0296(01)00107-9
  3. Non-linear finite-element analysis of the shear response in prestressed concrete bridges vol.61, pp.8, 2009, https://doi.org/10.1680/macr.2008.61.8.591
  4. Failure Testing of a Full-Scale Reinforced Concrete T-Girder Bridge vol.243-249, pp.1662-8985, 2011, https://doi.org/10.4028/www.scientific.net/AMR.243-249.1767