Mechanical performance of prefabricated concrete beam-column joints with double-grouted sleeve connectors: A numerical and theoretical study

Lü, Zhiwei; Wu, Bin; Sakata, Hiroyasu; Huang, Jun; Zhang, Mingzhong

doi:10.1016/j.istruc.2023.07.060

Cited by 5 publications

(1 citation statement)

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“…The application of precast concrete structures originated in Europe in the late 19th century [1]. In contrast to the traditional cast-in-place (CIP), also known as monolithic construction methods, precast concrete structures have gained extensive global usage owing to their superior quality control, heightened construction efficiency, reduced on-site labor requirements, and minimized formwork necessity [2][3][4][5][6][7][8][9][10]. Precast concrete frames offer distinct advantages such as flexible interior space arrangements and excellent compatibility with building facades.…”

Section: Introductionmentioning

confidence: 99%

Hysteretic Behavior of Full-Scale Precast U-Shaped Composite Beam–Column Connections with Large-Diameter Reinforcements under High Axial Compression

Xue,

Lei,

Zhang

et al. 2024

Buildings

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This study introduces precast concrete beam–column connections comprised of composite beams, precast columns, and a monolithic joint core. The composite beams consist of U-shaped beams and floor slabs, leveraging the U-shaped beams for their lightweight nature, acceptable stiffness, and reduced demand for on-site support systems. To mitigate reinforcement congestion in the joint core, the precast connections incorporate large-diameter rebars (greater than 25 mm). This study conducted cyclic loading tests on four full-scale beam–column connections under 0.3 normalized compression, encompassing precast interior and exterior connections, along with two monolithic reference specimens, to investigate their behavior under seismic actions. The results revealed that all specimens exhibited bending failure at the beam ends, with minimal concrete deterioration observed in the joint core areas and columns. The hysteresis curves of the precast specimens and the monolithic connections exhibited a slight pinching effect. The strengths of the interior and exterior precast specimens were 13.3% and 7.8% lower than those of the reference monolithic connections, respectively. The ductility of interior precast connections and monolithic specimens stood at 2.36 and 2.23, respectively, indicating a negligible difference of less than 5%. Meanwhile, the positive and negative ductility of exterior precast connections were 3.06 and 2.34, which was approximately 8% lower than that of the reference connections. Furthermore, the stiffness degradation and energy dissipation capacity of the precast specimens aligned closely with the performance of the reference monolithic ones.

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