Efficient Prestressed Concrete-Steel Composite Girder for Medium-Span Bridges. II: Finite-Element Analysis and Experimental Investigation

In this paper, finite-element analysis (FEA) of the prestressed concrete-steel composite (PCSC) girder is performed to investigate strain and stress distributions in the girder sections and determine the influence of stud distribution on stresses in the concrete bottom flange. Approaches of FEA are discussed for the material and element models of steel, concrete, and strands, and element models of the bond between the concrete and strand and the shear studs, loading and boundary conditions, and convergence issues. A PCSC girder specimen is fabricated and instrumented in the structural laboratory to validate the proposed fabrication and design procedures. FEA and service design using the age-adjusted elasticity modulus method (AEMM) are both validated using the strain profiles at different sections and values of concrete surface strains and camber/deflection. Test results indicate that the cracking moment, ultimate moment, and ultimate shear of the PCSC girder can be well predicted using the AEMM and the AASHTO LRFD bridge design specifications.

• Record URL:
  • https://doi.org/10.1061/(ASCE)BE.1943-5592.0000479
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
• Supplemental Notes:
  • © 2013 American Society of Civil Engineers.
• Authors:
  • Deng, Yaohua
  • Morcous, George
• Publication Date: 2013-12

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1358-1372
• Serial:
  • Journal of Bridge Engineering
  • Volume: 18
  • Issue Number: 12
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0702
  • Serial URL: http://ojps.aip.org/beo

Subject/Index Terms

• TRT Terms: Bridge design; Composite materials; Cracking; Creep properties; Deformation curve; Design engineering; Finite element method; Girder bridges; Laboratory tests; Modulus of elasticity; Prestressed concrete; Pretensioning; Shear properties; Steel
• Subject Areas: Bridges and other structures; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete; I34: Steels and Metals;

Filing Info

• Accession Number: 01506058
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Jan 29 2014 2:01PM