The Behaviour of a Prefabricated Composite Bridge with Dry Deck Joints

Hällmark, Robert; Collin, Peter; Möller, Mikael

doi:10.2749/101686613x13439149157632

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…Префабрикована коловозна плоча са сувим спојевима [21] Армиранобетонске коловозне плоче са сувим спојевима су погодније за мостове малих распона и статичког система просте греде. Код таквих мостова цјелокупно оптерећење се узима у обзир на спрегнутом пресјеку.…”

Section: попречни суви спојевиunclassified

Спрегнути Друмски Мостови Са Префабрикованим Коловозним Плочама

Ковачевић¹

2013

AGG+

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Section: попречни суви спојевиunclassified

Спрегнути Друмски Мостови Са Префабрикованим Коловозним Плочама

Ковачевић¹

2013

AGG+

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“…Therefore, the most critical issue in the design of steel-concrete composite continuous bridges is to effectively inhibit the occurrence and development of cracking of the concrete deck within the hogging moment region. Many researchers have studied different ways to improve the anti-cracking capacity of the concrete deck, including pre-tension of the concrete deck and pre-jacking of the interior supports to induce shanginitial compressive stress in the concrete deck [1][2][3][4][5][6]. However, for these methods, due to the creep and shrinkage of concrete, the initial compressive stress in the concrete deck transfers to the steel girders, and concrete cracking problems occur.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on UHPC–RC Decks within Hogging Moment Region

Long

Zhou²,

et al. 2022

Applied Sciences

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Steel–concrete composite continuous bridges can take full advantage of concrete and steel, but in regions with hogging moments, cracking of the concrete deck is a big issue affecting the durability of bridges. In order to solve cracking problems within the hogging moment region, this study proposes a composite deck method using ultra-high-performance concrete (UHPC) and regular concrete (RC). In this way, the layers of UHPC and RC are composited to take advantage of the high tensile strength of UHPC materials to improve the anti-crack performance of the concrete deck within the hogging moment region. Four different specimens were designed to account for different layer thickness of UHPC. Bending experiments of the UHPC–RC composite deck were undertaken and a corresponding finite element model was established to study the behavior of the UHPC–RC composite deck. The regularity of crack development in different UHPC layer thicknesses was revealed, and the load-displacement results were compared to investigate the ultimate capacity of a steel–concrete composite bridge structure using a UHPC–RC composite deck. Finally, with consideration of material cost, a reasonable UHPC layer thickness suitable for the composite deck was obtained to provide a reference for the design of a UHPC–RC composite deck.

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“…However, for the preconnected composite girder systems, the prestressed forces are applied to the whole composite section and mostly are applied to the steel section. Kwon et al and Hällmark et al studied the behaviour of steel-concrete composite girders with prestressing tendons before concrete deck connected to steel girders [14,15]. Su et al studied the behaviour of a continuous composite box girder with prefabricated prestressed concrete slab in the hogging region [16].…”

Section: Introductionmentioning

confidence: 99%

Long-Term Behaviour of Precast Concrete Deck Using Longitudinal Prestressed Tendons in Composite I-Girder Bridges

Shi

Yin

2018

Applied Sciences

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Twin-I girder bridge systems composite with precast concrete deck have advantages including construction simplification and improved concrete strength compared with traditional multi-I girder bridge systems with cast-in-place concrete deck. But the cracking is still a big issue at interior support for continuous span bridges using twin-I girders. To reduce cracks occurrence in the hogging regions subject to negative moments and to guarantee the durability of bridges, the most essential way is to reduce the tensile stress of concrete deck within the hogging regions. In this paper, the prestressed tendons are arranged to prestress the precast concrete deck before it is connected with the steel girders. In this way, the initial compressive stress induced by the prestressed tendons in the concrete deck within the hogging region is much higher than that in regular concrete deck without prestressed tendons. A finite element analysis is developed to study the long-term behaviour of prestressed concrete deck for a twin-I girder bridge. The results show that the prestressed tendons induce large compressive stresses in the concrete deck but the compressive stresses are reduced due to concrete creep. The final compressive stresses in the concrete deck are about half of the initial compressive stresses. Additionally, parametric study is conducted to find the effect to the long-term behaviour of concrete deck including girder depth, deck size, prestressing stress and additional imposed load. The results show that the prestressing compressive stress in precast concrete deck is transferred to steel girders due to concrete creep. The prestressed forces transfer between the concrete deck and steel girder cause the loss of compressive stresses in precast concrete deck. The prestressed tendons can introduce some compressive stress in the concrete deck to overcome the tensile stress induced by the live load but the force transfer due to concrete creep needs be considered. The concrete creep makes the compressive stress loss and the force redistribution in the hogging regions, which should be considered in the design the twin-I girder bridge composite with prestressed precast concrete deck.

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The Behaviour of a Prefabricated Composite Bridge with Dry Deck Joints

Cited by 7 publications

References 1 publication

Спрегнути Друмски Мостови Са Префабрикованим Коловозним Плочама

Спрегнути Друмски Мостови Са Префабрикованим Коловозним Плочама

Experimental and Numerical Study on UHPC–RC Decks within Hogging Moment Region

Long-Term Behaviour of Precast Concrete Deck Using Longitudinal Prestressed Tendons in Composite I-Girder Bridges

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