Fatigue strength of prestressed composite steel-concrete beams

Pedro Albrecht, Wulin Li, Hamid - Saadatmanesh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Effective prestressing increases the strength of existing composite steel-concrete bridges. Investigators have determined the static strength of prestressed composite girders, but without addressing fatigue strength—an important design factor in highway bridges. In this paper, 11 prestressed composite beams with a cover plate welded to the tension flange were prestressed with two seven-wire strands. In fatigue tests to failure, cracks initiated in the flange at the cover-plate ends. Stress ranges in the strands and at the base of the shear studs were too small to initiate cracks. Prestressing of the steel beam so that the stress in the tension flange alternates between tension and compression under cyclic loading raised the fatigue strength of the welded cover plates by one category, from D to C.

Original languageEnglish (US)
Pages (from-to)1850-1856
Number of pages7
JournalJournal of Structural Engineering (United States)
Volume121
Issue number12
DOIs
StatePublished - 1995

Fingerprint

Steel
Flanges
Prestressing
Concretes
Composite materials
Fatigue of materials
Cracks
Highway bridges
Steel bridges
Concrete bridges
Beams and girders
Wire
Fatigue strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Building and Construction
  • Materials Science(all)

Cite this

Fatigue strength of prestressed composite steel-concrete beams. / Albrecht, Pedro; Li, Wulin; Saadatmanesh, Hamid -.

In: Journal of Structural Engineering (United States), Vol. 121, No. 12, 1995, p. 1850-1856.

Research output: Contribution to journalArticle

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