Experimental study on assembled monolithic steel-prestressed concrete composite beam in negative moment

Wang, Yu Hang; Yu, Jie; Liu, Jie Peng; Zhou, Bo; Chen, Y. Frank

doi:10.1016/j.jcsr.2019.06.004

Cited by 30 publications

(8 citation statements)

References 19 publications

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“…Steel-concrete composite beams have been widely applied in civil engineering, such as in buildings [1][2][3], floor systems [4] and bridges [5][6][7][8]. Compared with steel or reinforced concrete beams, the composite beam system has increased flexural strength and stiffness with reduced beam weight and depth due to composite action between the two materials [9,10].…”

Section: Introductionmentioning

confidence: 99%

Feasibility and performance of novel tapered iron bolt shear connectors in demountable composite beams

Song¹,

Xu²,

Chen³

et al. 2022

Journal of Building Engineering

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Section: Introductionmentioning

confidence: 99%

Feasibility and performance of novel tapered iron bolt shear connectors in demountable composite beams

Song¹,

Xu²,

Chen³

et al. 2022

Journal of Building Engineering

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“…Fragiacomo et al [22] proposed a formulation for the evaluation of composite beam response under varied monotonic load levels, including both short-and long-term loading. To improve the bending capacity and anti-slip performance of composite beams, Wang et al [23] proposed new assembled monolithic steel-prestressed concrete composite beams and demonstrated their superiority in flexure capacity by experimental investigations. With a growing demand in engineering applications of composite beam systems, researches on performance of composite beams with varied types of configurations-such as high-strength steel concrete composite beams [24], composite beams with different slab materials and shear transfer mechanisms [25], prefabricated composite beams with bolt shear connectors [26], among others-also have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Equivalent Flexural Stiffness of Steel–Concrete Composite Beams in Frame Structures

Tao

Zhou

et al. 2021

Applied Sciences

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Vertical deflection of a frame beam is an important indicator in the limit-state analysis of frame structures, particularly for steel–concrete composite beams, which are usually designed with large spans and heavy loads. In this study, the equivalent flexural stiffness of composite frame beams is analysed to evaluate their vertical deflection. A theoretical beam model with a spring constraint boundary and varied stiffness segments is established to consider the influence of both the rotation restraint stiffness at the beam ends and the cracked section in the negative moment region, such that the inelastic bending deformation of the composite beams can be elaborately described. By an extensive parametric analysis, a fitting formula for evaluating the equivalent flexural stiffness of the composite beams, including the effects of the rotational constraint and the concrete cracking, is obtained. The validity of the proposed formula is demonstrated by comparing its calculation accuracy with those of existing design formulas for analysing the equivalent flexural stiffness of the composite beam members. Moreover, its utility is further verified by conducting non-linear finite element simulations of structural systems to examine the serviceability limit state and the entire process evolution of beam deflections under vertical loading. Finally, to facilitate the practical application of the proposed formula in engineering design, a simplified method to calculate the deflection of composite beams, which utilises the internal force distribution of elastic analysis, is presented based on the concept of equivalent flexural stiffness.

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“…Zhou et al (2007) performed an experimental study on the crack resistance and crack width in the negative bending zone of prestressed steel fiber–reinforced concrete (SFRC) and steel composite beams, and put forward an empirical formula for calculating the maximum crack width considering factors such as the degree of prestressing and the force ratio. Wang et al (2020) studied the mechanical properties of assembled monolithic steel–prestressed concrete composite beams (AMS-PCCB) under negative bending moments. The effects of shear joints, prestress, and other factors on the flexural capacity, interfacial slip, and crack development of composite beams were obtained.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on the flexural behavior of local prestressed steel–concrete composite continuous box beams

Zhang

Cao

et al. 2020

Advances in Structural Engineering

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The flexural bearing capacities of three composite continuous box beams with different prestressing degrees were tested and studied to investigate the influences of local prestressing bundles on the deflection, relative slip of interface, strain, and redistribution of the internal force of the steel–concrete composite continuous box beam. Results show that the arrangement of local prestress can not only improve the bending stiffness at the mid-span of the composite continuous box beam, but also significantly enhance the ductility. In the design process of the local prestressed composite continuous box beam, the influence of the slip at the middle support should be fully considered, and the deflection could not be taken as a control factor. The internal force redistribution of the local prestressed continuous box beam is lower than that of the ordinary continuous box beam, but it still has good plastic internal force redistribution. The number of prestressing bundles in the negative moment region is the main factor that affects the internal force redistribution of the middle support.

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Experimental study on assembled monolithic steel-prestressed concrete composite beam in negative moment

Cited by 30 publications

References 19 publications

Feasibility and performance of novel tapered iron bolt shear connectors in demountable composite beams

Feasibility and performance of novel tapered iron bolt shear connectors in demountable composite beams

Analysis of Equivalent Flexural Stiffness of Steel–Concrete Composite Beams in Frame Structures

An experimental study on the flexural behavior of local prestressed steel–concrete composite continuous box beams

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