Residual deflection analysis in negative moment regions of steel-concrete composite beams under fatigue loading

Song, Aiming; Wan, Shui; Jiang, Zhengwen; Xu, Jie

doi:10.1016/j.conbuildmat.2017.09.075

Cited by 26 publications

(7 citation statements)

References 20 publications

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“…e reasonable parameters are directly related to the applicability of the GTN model. Tvergaard and Hutchinson [25] suggested three constitutive parameters as constants: q 1 � 1.5, q 2 � 1, and q 3 � q 2 1 . e void nucleation parameters can be analyzed according to the normal distribution of the nucleation mode.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…In steel-concrete composite beams, the stud connectors are key components which ensure shear transfer with the reinforced concrete slab. ey are often structural failure points [1][2][3]. In the daily operation of an engineered bridge, traffic loads and temperature loads readily cause interface cracks among materials or cracks in the concrete slab.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Research and Simulation on the Mechanical Performance Degradation of Corroded Stud Shear Connectors

Wang

Liu

2019

Mathematical Problems in Engineering

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Electrochemical accelerated corrosion and tensile tests were conducted on six series of 30 stud specimens in this study to assess the various mechanical properties in corroded stud connectors. The results indicate that there is a gradual decline in mechanical properties (e.g., yield strength, ultimate strength, and plasticity) as stud corrosion rate increases. Degradation equations for these parameters were established via fitting analysis on the test data. A Gurson–Tvergaard–Needleman (GTN) constitutive model describing the tensile behavior of corroded studs was established based on mesodamage mechanics and finite element analysis. In the GTN model, the corrosion rate equals the original void volume fraction; the trial-and-error method was adopted to determine the relationship between the corrosion rate and material failure parameters. The finite element simulation results are in good agreement with the experimental results. The GTN model accurately simulates the uniaxial tensile behavior of the corroded stud.

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Section: Finite Element Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Research and Simulation on the Mechanical Performance Degradation of Corroded Stud Shear Connectors

Wang

Liu

2019

Mathematical Problems in Engineering

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“…Existing research shows that using bamboo engineering materials as flexural members have some unfavorable aspects, such as low section stiffness and insufficient bearing and spanning capacity. In light of the research on timber-concrete and steel-concrete composite structures [16][17][18][19][20], bamboo-steel composite structures [21][22][23] and bamboo-concrete composite structures [24][25][26][27][28] have been proposed and explored to further improve the overall mechanical performance of engineering bamboo and other engineering materials [29][30][31]. To explore a more effective and reliable combination mode, a new type of bamboo-concrete composite structure using perforated steel plates as connectors was proposed.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of bamboo–concrete composite beams with perforated steel plate connections

Wang

Wei

et al. 2020

J Wood Sci

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A new type of bamboo–concrete composite structure using perforated steel plates as connectors was proposed. To study the composite effect of this new type of composite structure, the slip behavior of bamboo–concrete shear connectors was first studied through push-out tests. Subsequently, four-point bending tests of ten bamboo–concrete composite beams were carried out. The results show that the failure of bamboo–concrete shear connectors occurred between the perforated steel plate and the concrete, and there was no obvious damage between the perforated steel plate and the bamboo. The load carrying capacity of perforated steel plate connectors was relatively stable. The failure mode was moderate failure. Considering the three stages of the load–slip curve, an exponential function is proposed to describe the load–slip curve. The failure modes of composite beams can be summarized as two types. In the first type, the bamboo beam ruptures on the bottom and the concrete dose not suffer significant damage; in the second type, the top surface of the concrete first exhibits longitudinal cracks, and finally, the bamboo beam ruptures. Compared with bamboo beams, the ultimate load of composite beams increased by 1.2–1.5 times, and the sectional stiffness of composite beams increased by 2.9–4.2 times. The equivalent section stiffness was obtained after determining the connection coefficient, and the connection coefficient γb ranged between 0.50 and 0.80 and decreased as the center spacing of the perforated steel plate increased. The equivalent cross-section stiffness obtained by different load stages of the shear slip stiffness was calculated to predict the mid-span displacement. The calculation results show that the effect of slip stiffness on the equivalent stiffness of cross section is not sensitive, and a 35% increase in slip stiffness results in a maximum increase in equivalent section stiffness of only 6%.

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“…Few researchers have studied the theoretical methods of fatigue deformation. Song et al [13] presented a calculation model of residual deformation related to static loading in the hogging moment region of composite beams, according to the analytical method of PPC (partially prestressed concrete) beams. en, a calculation model of the residual deformation connected with fatigue loading in the hogging moment region of composite beams was derived, based on the differential equation of the residual interface slip and the computing method of the residual slip in push-out specimens of studs, but this study did not give the analysis methods for calculating the instantaneous deflection under fatigue loading and the total midspan deflection in the hogging moment region.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Study on Deformation Behavior in Hogging Moment Regions of Composite Beams

Song

Luo

Wan

et al. 2020

Advances in Civil Engineering

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The results of an experimental and analytical study on the static and fatigue behavior in steel-concrete composite beams under the hogging moment were presented in this paper, and the structural deformation was discussed cautiously and emphatically. Firstly, the static and fatigue tests on three inverted simply supported beams were conducted. The development of cracks under static loading, the load-deformation curves, and the values of residual deformation under fatigue load were recorded and analyzed in detail. Several meaningful conclusions were obtained from the analysis of experimental results. To study the development laws of residual deformation under fatigue load, the analytical methods of residual midspan deflection and residual rebar strain were proposed, respectively. The limitation and accuracy of the presented models were studied according to the comparison between the prediction and measured results. The calculation values of the proposed models showed good agreement with the test results. Finally, the design recommendations of fatigue deformation were proposed according to the experimental and analytical study on steel-concrete composite beams subjected to hogging moment.

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Residual deflection analysis in negative moment regions of steel-concrete composite beams under fatigue loading

Cited by 26 publications

References 20 publications

Experimental Research and Simulation on the Mechanical Performance Degradation of Corroded Stud Shear Connectors

Experimental Research and Simulation on the Mechanical Performance Degradation of Corroded Stud Shear Connectors

Flexural behavior of bamboo–concrete composite beams with perforated steel plate connections

Experimental and Analytical Study on Deformation Behavior in Hogging Moment Regions of Composite Beams

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