Nonlinear Longitudinal Shear Distribution in Steel-Concrete Composite Beams

Grzeszykowski, B.; Szmigiera, Elżbieta

doi:10.2478/ace-2019-0005

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…To make this type of structure widely used and obtain better economic benefits, it is necessary to overcome this stress defect in the negative bending moment zone. Many scholars have carried out much research work on this problem [5][6][7]. Song et al [8] adopted the numerical analysis method to study the improvement in the inelastic mechanical property of steel-concrete composite beams under a negative moment, which was strengthened by carbon-fiber-reinforced polymer laminates.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior improving study of concrete deck of main beam at pylon root of composite beam cable-stayed bridge

Qi,

Wang,

Pan

et al. 2024

Archives of Civil Engineering

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Steel-concrete composite beam has been increasingly applied to large span cable-stayed bridges. It takes full advantage of the material properties of steel and concrete. However, the concrete deck bears tension in the negative moment zone, such as zero block, which is disadvantageous to structures. Aiming at this problem, a finite element model of the zero block in the negative moment zone of a semi-floating cable-stayed bridge is built, and the local mechanical performance of the bridge deck under completed status is studied. Based on the analysis results, three improvement measures have been proposed. The improvement effect of each method and composed of three methods has been studied. The numerical results show that the whole zero block zone is in the compressed state under the combined action of the bending moment and axial force of the stay cable. However, the local negative moment effect in the zero block zone is very prominent under the support of the diaphragm plate. Removing parts of the diaphragm plate at the bearing position can significantly improve local mechanical behavior in the concrete deck, which transfers the local support to the adjacent two diaphragm plates. The composed improvement effect is prominent when the three measures are adopted simultaneously.

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Section: Introductionmentioning

confidence: 99%

Mechanical behavior improving study of concrete deck of main beam at pylon root of composite beam cable-stayed bridge

Qi,

Wang,

Pan

et al. 2024

Archives of Civil Engineering

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“…The parts are made of materials of different properties and they are permanently connected [20]. The components are connected using shear connections, which play a crucial role and transfer the longitudinal shear force in composite beams [21]. Thanks this combination, multiple benefits can be gained, e.g., reduced weight, better material efficiency [22].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Numerical Analyses of Steel-timber Composite Beams with LVL Slabs

Strzelecka,

Polus,

Chybiński

2023

Civil and Environmental Engineering Reports

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Recently conducted studies have shown that significant benefits are to be gained by joining steel beams and timber slabs. Steel-timber composite beams present a sustainable solution for the construction industry because of their high strength and stiffness, and lower carbon footprint and self-weight than steel-concrete composite beams. The behaviour of steel-timber composite beams is still being investigated to reduce knowledge gaps. This paper presents theoretical and numerical analyses of steel-timber composite beams consisting of steel girders and laminated veneer lumber slabs. The elastic and plastic resistance to bending were estimated analytically based on the elastic analysis and the rigid-plastic theory. The impact of the composite action, the LVL slab thickness, the cross-section of a steel girder and the steel grade on resistance to bending was evaluated. The load-deflection curve of the composite beam was obtained using a 2D finite element model, in which timber failure was captured using the Hashin damage model. The results of the numerical simulation were in good agreement with the ones of the theoretical analyses.

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“…During the past decades, steel girder bridges, such as steel box-girder bridges, steel truss-girder bridges, and steel-concrete composite girder bridges, have been widely used in expressway bridge constructions [1][2][3][4][5]. The steel-concrete composite girder bridge, retaining concrete slabs in the compression area and steel beam in the tension area and integrating the two parts via shear connectors, exhibits outstanding efficiency in utilizing the strength of the constitutive materials.…”

Section: Introductionmentioning

confidence: 99%

Cracking control technique for continuous steel-concrete composite girders under negative bending moment

2023

Archives of Civil Engineering

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Continuous steel-concrete composite girder can fully utilize material strength and possess large spanning ability for bridge constructions. However, the weak cracking resistance at the negative bending moment region of the girder seriously harms its durability and serviceability. This paper investigates practical techniques to improve the cracking performance of continuous steel-concrete composite girders subjected to hogging moment. A real continuous girder was selected as the background bridge and introduced for numerical analysis. Modeling results show that under the serviceability limit state, the principle stress of concrete slabs near the middle piers of the bridge was far beyond the allowable material strength, producing a maximum tensile stress of 10.0 MPa. Approaches for strengthening concrete decks at the negative moment region were developed and the effectiveness of each approach was assessed by examing the tensile stress in the slabs. Results indicate that the temporary counterweight approach decreased the maximum tensile stress in concrete slabs by 22%. Due to concrete shrinkage and creep, more than 65% of the prestressed compressive stresses in concrete slabs were finally dispersed to the steel beams. A thin ultra-high performance concrete (UHPC) overlay at the hogging moment region effectively increased the cracking resistance of the slabs, and practical engineering results convicted the applicability of the UHPC technique.

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Nonlinear Longitudinal Shear Distribution in Steel-Concrete Composite Beams

Cited by 7 publications

References 7 publications

Mechanical behavior improving study of concrete deck of main beam at pylon root of composite beam cable-stayed bridge

Mechanical behavior improving study of concrete deck of main beam at pylon root of composite beam cable-stayed bridge

Theoretical and Numerical Analyses of Steel-timber Composite Beams with LVL Slabs

Cracking control technique for continuous steel-concrete composite girders under negative bending moment

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