Fatigue Performance Test of Steel Plate-concrete Hollow Composite Deck

YANG Yong, ZENG Su-sheng, XUE Jian-yang, NIE Jian-guo

China Journal of Highway and Transport ›› 2011, Vol. 24 ›› Issue (3) : 44-50.

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China Journal of Highway and Transport ›› 2011, Vol. 24 ›› Issue (3) : 44-50.
Original Article

Fatigue Performance Test of Steel Plate-concrete Hollow Composite Deck

  • YANG Yong1,2, ZENG Su-sheng1, XUE Jian-yang1, NIE Jian-guo3
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Abstract

Fatigue tests of seven steel plate-light concrete hollow composite decks and two steel plate-common concrete composite decks were conducted. Five main factors, such as layout type of steel tube, fatigue load amplitude, upper and lower limit of fatigue load, fatigue load times and performance of concrete material were chosen, and their influences onfatigue failure mode, fatigue rigidity degeneration, fatigue dynamics response and fatigue strength of composite deck under fatigue load were studied. Results show that failure modes of specimens withlayout types of two steel tubes are all caused by fatigue cracking of the bottom steel plate which results in overall failure of each specimen. The times of fatigue cycles are mainly controlled by loading amplitude, and haven't a direct relationship with upper limit of fatigue load. The fatigue performances of specimens with common concrete are better than those with light concrete. The failure mode of hollow composite deck is fracture of bottom steel plate. The degenerations of composite action and failure of the composite decks are not found in the test. Calculation of fatigue life of composite deck which mainly presents calculation of fatigue strength of bottom steel plate can be calculated by fatigue life theory of steel structure based on method of fatigue load amplitude.

Key words

bridge engineering / steel plate-concrete hollow composite deck / fatigue test / failure mode

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YANG Yong, ZENG Su-sheng, XUE Jian-yang, NIE Jian-guo. Fatigue Performance Test of Steel Plate-concrete Hollow Composite Deck[J]. China Journal of Highway and Transport, 2011, 24(3): 44-50

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