Fatigue performance of stud connectors in joints between top slabs and steel girders with corrugated webs subjected to transverse bending moments

Yang, Tao; Chen, Mingyu; Liu, Yuqing; Zhang, Yun; Chen, Xiaobin; Xu, Xiaoqing

doi:10.1016/j.engstruct.2024.118132

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…The bending moment M y when the tensile steel reinforcement in the bottom plate is yielding can be calculated using Formula (7).…”

Section: Breaking Bending Moment Mumentioning

confidence: 99%

“…Due to the large longitudinal stiffness of steel plate webs, the use of steel plate webs instead of concrete webs is not conducive to the application of the prestress of a box girder [4]. Although the 'accordion' effect of corrugated steel webs is beneficial to prestressing [5][6][7], when the span of box girder bridges is large, the stability problem of corrugated steel webs is prominent, and additional stiffening is required [8]. Replacing concrete webs with steel truss webs not only leads to a lighter dead weight but also mainly subjects bridges to axial force, with a clearer force transmission path and better stability than corrugated steel webs.…”

Section: Introductionmentioning

confidence: 99%

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Bending Performance of a Prestressed Concrete Composite Girder Bridge with Steel Truss Webs

Wang,

Liu,

Chen

2024

Applied Sciences

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An experiment was conducted on a prestressed concrete (PC) composite girder bridge with steel truss webs to investigate its flexural performance. The mechanical characteristics and failure modes of a PC composite girder bridge with steel truss webs was clarified. Finite element (FE) analysis was carried out, and the influence of the girder height-to-span ratio and eccentric loading effect on the flexural performance of a composite beam bridge with a steel truss web was discussed. The method for calculating the cracking bending moment, the bending moment at the rebar yield stage, and the ultimate bending moment of a PC composite girder with steel truss webs was proposed. Key findings include that, in both the elastic and cracking elastic stages, the strain of the bottom and top conforms to the plane-section assumption. Throughout the loading process, there was no occurrence of joint failure or local buckling failure in the steel truss webs; the composite girder ultimately fails due to excessive deformation, indicating that the overall mechanical performance of the composite beam is good. The deflection and stress in the mid-span section decrease with an increasing height-to-span ratio, and there are significant impacts of eccentric loading on deflection and stress. Compared with the results of the FE analysis and test, the calculation methods of the cracking moment, reinforcement yield moment, and ultimate moment of PC composite girders with steel truss webs presented in this paper have a high accuracy.

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“…The bending moment M y when the tensile steel reinforcement in the bottom plate is yielding can be calculated using Formula (7).…”

Section: Breaking Bending Moment Mumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bending Performance of a Prestressed Concrete Composite Girder Bridge with Steel Truss Webs

Wang,

Liu,

Chen

2024

Applied Sciences

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Modified Easley formula for elastic critical global shear buckling stress of corrugated steel webs considering real boundary conditions

Tong,

Shen,

et al. 2024

Sci Rep

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The real juncture between corrugated steel webs (CSWs) and flanges follows a multi-segmented line, distinct from that of flat steel webs. Classic methods may yield significant deviations in predicting the elastic global shear buckling capacity of CSWs of various scales due to their failure to consider real boundary constraints. Therefore, a universally applicable formula for calculating the elastic critical global shear buckling stress of CSWs, which accounts for real boundary conditions, is proposed. This formula is pertinent to both large-scale engineering CSWs and small-scale testing CSWs. This study commenced with a comprehensive reassessment of the elastic global shear buckling calculation method. Subsequently, the influence of geometric parameter ratios on the elastic critical global buckling stress was examined. The primary parameter was identified and employed to improve the global buckling coefficient. The proposed calculation method was validated using different corrugation configurations, including 1000-type, 1200-type, 1600-type, 1800-type, and 2000-type CSWs, as well as other CSWs used in experimental settings. These results were compared with those obtained from other reference methods. Findings indicate that the accuracy of the classic theoretical method is affected by variations in both boundary conditions and geometric dimensions due to the constraint effect of real boundary conditions. Under the real boundary conditions, the elastic critical global shear buckling stress of CSWs with simply supported boundary conditions is close to that of CSWs with consolidated boundary conditions. The ratio of web height to corrugation depth primarily affects the elastic global shear buckling capacity, which decreases as the ratio increases. The Easley formula can be modified based on the web height to corrugation depth ratio. Comparisons of numerous numerical and theoretical results reveal that the proposed calculation method exhibits commendable computational precision. In comparison to alternative formulas, the proposed method demonstrates enhanced consistency for calculating CSWs with varying geometric dimensions and boundary conditions, thereby demonstrating its favorable applicability. These conclusions provide valuable reference for the shear design of CSWs.

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Experimental investigation on the fatigue properties of studs under the coupling of load and corrosion environment

Kuang,

Peng,

Wang

et al. 2024

Mater Struct

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Fatigue performance of stud connectors in joints between top slabs and steel girders with corrugated webs subjected to transverse bending moments

Cited by 3 publications

References 27 publications

Bending Performance of a Prestressed Concrete Composite Girder Bridge with Steel Truss Webs

Bending Performance of a Prestressed Concrete Composite Girder Bridge with Steel Truss Webs

Modified Easley formula for elastic critical global shear buckling stress of corrugated steel webs considering real boundary conditions

Experimental investigation on the fatigue properties of studs under the coupling of load and corrosion environment

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