Experimental study on direct shear performance of prefabricated splicing joints of ultrahigh-performance concrete

Zheng, Hui; Chen, Chao; Xuan, Shuaifei; Ma, Xiaowan; Li, Zhaochao; Li, You

doi:10.1016/j.cscm.2022.e01771

Cited by 3 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, some researchers argue against disregarding the impact of adhesive layer thickness on the shear behavior of joints. In finite element analysis modeling, epoxy joints have been represented as a linear elastic material to simulate the thickness of epoxy joints [22][23][24]. Although there are many numerical simulation methods, it is necessary to conduct further research in order to accurately simulate the mechanical behavior of epoxy joints.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Mechanical Behavior and Joint Shear Capacity Optimization of Glued Keys in Segmental U-Shaped Bridges

Yang,

Zhang,

Liang

et al. 2024

Buildings

View full text Add to dashboard Cite

This paper presents an in-depth analysis of the mechanical behavior and joint shear capacity optimization of segmental U-shaped bridges, with a focus on the application of precast segmental techniques in the construction of U-beam bridges widely used in urban rail transit networks. This study further explores the roles of key position distribution and size in the overall stability and service behavior of such structures. Considering the critical case study of the Colombia Bogotá Metro Line 1 project, finite element modeling was carried out using ABAQUS 6.14 to simulate concrete material behaviors and to evaluate the stress–strain relationship in accordance with the concrete plastic damage model and existing standards. This research identifies the significant contribution of keys in minimizing deformation and enhancing shear capacity, demonstrating the pivotal influence of shear key design on the mechanical behavior of segmental bridges. By calculating the shear capacity under different cases, this study provides recommendations on key distributions and dimensions that optimize joint shear capacities, indicating that augmenting key size within the web plate section decisively reinforces the bridge’s mechanical resilience.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of the Mechanical Behavior and Joint Shear Capacity Optimization of Glued Keys in Segmental U-Shaped Bridges

Yang,

Zhang,

Liang

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

Shear mechanism of UHPC epoxied‐keyed joints in PSUBs: Experimental and numerical investigations

Wu,

Cao,

Zhao

et al. 2024

Structural Concrete

View full text Add to dashboard Cite

Precast segmental ultra‐high‐performance concrete bridge presents broad application prospects. UHPC keyed joints play significant roles in the structural performance of such bridges, which require systematic investigation to comprehend their shear behavior and mechanism thoroughly. This study aimed to explore the shear mechanism of UHPC epoxied‐keyed joints. Experimental and numerical investigations were conducted to investigate the influence of key size, key number, key angle, and reinforcement form on the shear performance. The test results showed that the failure mode was primarily affected by the key number and reinforcement form, which can be divided into three categories: direct shear, segmental shear, and stepwise shear failure. The large‐keyed joints exhibited superior shear performance compared to the three‐keyed joints. The initial shear stiffness, ultimate bearing capacity, and normalized shear stress were 15%, 5.3%, and 5.6% higher, respectively. Furthermore, the mechanism of the two reinforcement forms was clarified. The key rebars mainly improve the ductility of the specimens, while the dowel action of the embedded rebars can enhance the shear efficiency and synergistic force ability of the joints. The numerical simulation results indicated that 2.7% was the best ratio of key rebar, and embedded rebars with larger diameters can strengthen the shear capacity and post‐peak performance of the joints.

show abstract

Experimental study on oblique-shear performance of splicing joint for precast ultrahigh-performance concrete segmental bridges

Zheng

Gong

Chen

et al. 2023

Case Studies in Construction Materials

View full text Add to dashboard Cite

Experimental study on direct shear performance of prefabricated splicing joints of ultrahigh-performance concrete

Cited by 3 publications

References 34 publications

Analysis of the Mechanical Behavior and Joint Shear Capacity Optimization of Glued Keys in Segmental U-Shaped Bridges

Analysis of the Mechanical Behavior and Joint Shear Capacity Optimization of Glued Keys in Segmental U-Shaped Bridges

Shear mechanism of UHPC epoxied‐keyed joints in PSUBs: Experimental and numerical investigations

Experimental study on oblique-shear performance of splicing joint for precast ultrahigh-performance concrete segmental bridges

Contact Info

Product

Resources

About