Static and fatigue behaviors of short stud connectors embedded in ultra-high performance concrete

Wei, Chuan; Zhang, Qinghua; Zhou, Yue; Cheng, Zhenyu; Li, Mingzhe; Cui, Chuang

doi:10.1016/j.engstruct.2022.114888

Cited by 20 publications

(8 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the position of headed studs, two spring elements (Combin39) were used to simulate the transverse and longitudinal load slip behavior. Te properties adopted for the headed studs were acquired from literature [33]. In vertical direction, the vertical displacement of the coincident nodes at the location of studs was coupled.…”

Section: Discussionmentioning

confidence: 99%

Fatigue Performance of Steel–UHPC Composite Bridge Deck System with Large Longitudinal Rib

Zhou

Wei

Liang³

et al. 2022

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

A critical problem in the development and application of orthotropic steel bridge decks (OSDs) is fatigue cracking, which is determined by the deck’s structural system, mechanical characteristics, load, and external environmental factors. The development of bridge deck systems with high fatigue resistance is increasingly gaining interest in the field of bridge deck design. An effective method for improving the fatigue life of OSDs is the introduction of an ultra high performance concrete (UHPC) layer to enhance OSD’s stiffness. In this study, two types of experiments were performed to investigate the transverse and longitudinal fatigue behaviors of a steel–UHPC composite bridge deck with large longitudinal ribs. The experiments show that the application of a 70-mm-thick UHPC layer effectively reduces the stress intensity at key fatigue details in OSDs. The influence of the UHPC layer on the OSD fatigue performance was evaluated by experiments and finite element analysis. After the formation of microcracks on the UHPC surface layer, the composite bridge deck system continued to exhibit adequate fatigue performance. Moreover, the effects of damage accumulation on the UHPC layer and studs in transverse specimens were evaluated.

show abstract

Section: Discussionmentioning

confidence: 99%

Fatigue Performance of Steel–UHPC Composite Bridge Deck System with Large Longitudinal Rib

Zhou

Wei

Liang³

et al. 2022

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…Throughout regular usage, failures of shear connections occur comparatively infrequently. Consequently, the impact of shear connections on the load-bearing capacity of composite structures mainly manifests through the load-slip relationship [19,[22][23][24]. Prior research attests to the nonlinear elastoplastic behavior that shear connections display during the loading process [25,26].…”

Section: Introductionmentioning

confidence: 99%

A Constitutive Model for Stud Connection in Composite Structures

Qin,

Zhao

2024

Buildings

View full text Add to dashboard Cite

The complexity of finite element analysis for composite structures can be significantly reduced by representing the connector and adjacent concrete as a macroscopic element. Nevertheless, the prevailing macroscopic models for shear connections predominantly employ nonlinear elastic theory. This approach introduces inaccuracies in estimating structural stiffness and load-bearing capabilities, primarily due to its inability to precisely capture the cumulative effects of plastic damage. In response, this study introduces a novel macroscopic elastoplastic model grounded in plasticity theory, aimed at accurately characterizing the nonlinear behavior of stud connections subjected to concurrent shear and tensile forces. This paper meticulously delineates the implementation of the elastoplastic constitutive model using the backward Euler method for numerical integration. It further articulates the derivation of the consistent tangent stiffness, which aligns with the convergence efficiency of the Newton–Raphson iterative approach. The computation of the element stiffness matrix for a two-node element is executed via the governing equation inherent to the finite element method. An exemplar macroelement test conducted in ABAQUS affirms the implicit backward Euler scheme’s stability and consistency across varying tolerances. Validation of the elastoplastic model against empirical test outcomes corroborates its efficacy, demonstrating the model’s precision in predicting the load–displacement behavior of stud connections under the influence of shear and tensile forces.

show abstract

“…The results showed that the fatigue strength of short studs in UHPC was higher than that of the regular studs in normal concrete. Wei et al [22] carried out seven fatigue push-out tests of short studs in UHPC under different load ranges, with an aspect ratio of 3.12. Based on experimental and literature results, a fatigue strength design S-N curve for short studs in UHPC was provided.…”

Section: Introductionmentioning

confidence: 99%

“…These necessitate a smaller aspect There are limited studies [21][22][23][24] on the fatigue behavior of short stud connectors in UHPC, and all the aspect ratios were larger than 2.0. The fatigue failure mode in the existing studies [21][22][23][24] was shear stud failure, in which fracture surfaces were between stud shank and base steel, and the UHPC remained generally intact. Cao et al [21] conducted four fatigue push-out tests of short studs with an aspect ratio of 2.7 in UHPC.…”

Section: Introductionmentioning

confidence: 99%

Study of Fatigue Performance of Ultra-Short Stud Connectors in Ultra-High Performance Concrete

An,

Wang,

Zhuang

et al. 2024

Buildings

View full text Add to dashboard Cite

Steel–UHPC composite bridge decking made of ultra-high performance concrete (UHPC) has been progressively employed to reinforce historic steel bridges. The coordinated force and deformation between the steel deck and UHPC are therefore greatly influenced by the shear stud connectors at the shear interface. Four fatigue push-out specimens of ultra-short studs with an aspect ratio of 1.84 in UHPC were examined to investigate the fatigue properties of ultra-short studs with an aspect ratio below 2.0 utilized in UHPC reinforcing aged steel bridges. The test results indicated that three failure modes—fracture surface at stud shank, fracture surface at steel flange, and fracture surface at stud cap—were noted for ultra-short studs in UHPC under various load ranges. The fatigue life decreased from 1287.3 × 104 to 24.4 × 104 as the shear stress range of the stud increased from 88.2 MPa to 158.8 MPa. The UHPC can ensure that the failure mode of the specimens was stud shank failure. Based on the test and literature results, a fatigue strength design S–N curve for short studs in UHPC was proposed, and calculation models for stiffness degradation and plastic slip accumulation of short studs in UHPC were established. The employment of ultra-short studs in the field of UHPC reinforcing aging steel bridges can be supported by the research findings.

show abstract

Static and fatigue behaviors of short stud connectors embedded in ultra-high performance concrete

Cited by 20 publications

References 29 publications

Fatigue Performance of Steel–UHPC Composite Bridge Deck System with Large Longitudinal Rib

Fatigue Performance of Steel–UHPC Composite Bridge Deck System with Large Longitudinal Rib

A Constitutive Model for Stud Connection in Composite Structures

Study of Fatigue Performance of Ultra-Short Stud Connectors in Ultra-High Performance Concrete

Contact Info

Product

Resources

About