Experimental investigation of precast concrete based dry mechanical column-column joints for precast concrete frames

Hu, Ju-Yun; Hong, Won‐Kee; Park, Seon-Chee

doi:10.1002/tal.1337

Cited by 41 publications

(22 citation statements)

References 22 publications

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“…The authors obtained test data of Figure 10 in the previous study [24] and found numerical data that matched the test data via finite element analysis based on the tie model established between the two separate surfaces. A numerical investigation of the proposed frames using finite element analysis (FEA) based on concrete plasticity was carried to explore the nonlinear structural behavior of the section.…”

Section: Methodsmentioning

confidence: 99%

Part I: The Analytical Model Predicting Post-Yield Behavior of Concrete-Encased Steel Beams Considering Various Confinement Effects by Transverse Reinforcements and Steels

Nguyen

Hong

2019

Materials

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The purpose of the work was to propose analytical model considering double confinements (provided by both transverse reinforcements and a wide flange steel section), which was verified by the nonlinear finite element analysis considering concrete-damaged plasticity. The scope of the effort and the procedures to achieve the aim of this study included the identification of the concrete confinements provided by both transverse reinforcements and a wide flange steel section based on the elasto-plastic model in tension for both rebar/steel sections and elasto-buckling for rebars in compression. The influence of rebar buckling in the compression zone on flexural moment strength was also investigated with and without considering confining effects offered by steel sections. The analytical approach predicted a post-yield behavior of composite beams based on the confining effect offered by both the shear reinforcement and wide steel flange sections. However, for beams without axial loads, the compressive zones with high and partial confinements for concrete sections at the yield and maximum load limit state were limited when compressive buckling failure was not considered, preventing the confining factors from significantly influencing the flexural load resisting capacity. An accurate flexural capacity of composite beams can be obtained when rebar was modeled with buckling in the compression zone.

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Section: Methodsmentioning

confidence: 99%

Part I: The Analytical Model Predicting Post-Yield Behavior of Concrete-Encased Steel Beams Considering Various Confinement Effects by Transverse Reinforcements and Steels

Nguyen

Hong

2019

Materials

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“…Dry mechanical connections for precast concrete frames were proposed in the previous study of (Hu, Hong, and Park 2017), where mechanical joints for both irregular steel-concrete composite precast frames and reinforced concrete precast frames were developed to replace conventional cast-inplace concretes. An experimental investigation of "L"-shaped precast concrete column joints with laminated mechanical plates was also performed to verify that L-shaped precast columns spliced by laminated metal plates provided fully and partially restrained moment connections (Nzabonimpa and Hong 2019) where brief numerical investigations were presented with limited discussions of microscopic strains to explore damage evolution of structural components of mechanical joints.…”

Section: Significance Of the Studymentioning

confidence: 99%

Strain evolution of L-shaped precast columns spliced by laminated metal plates, part I

Nguyen

Hong

Kim

2021

Journal of Asian Architecture and Building Engineering

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Mechanical joints for both irregular steel-concrete composite precast frames and reinforced concrete precast frames were developed to replace conventional cast-in-place concretes in the previous study of the authors. Novel connections modified from conventional steel joints having fully restrained moment connections offer rapid and facile erections. This study aims to numerically identify microscopic strain evolution and failure modes of the laminated metal plates splicing L-shaped precast composite columns. Numerical parameters including material properties of structural components of mechanical joint were implemented to determine damages and strength degradations with associated fractures. Comprehensive numerical results agreed well with test data, which explored structural behavior and contribution of each structural element of mechanical joint to flexural capacity. Strain evolution showed that degradation of the mechanical joints was retarded by interior bolts to a level similar to monolithic columns, resulting in contribution of mechanical joint to flexural capacity of columns. Influence of axial loads on the behavior of columns with mechanical joints was also evaluated to provide design recommendations.

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“…Thereby proving the sleeve connections as efficient and strong for mainstream connections [29]. A novel mechanism for column to column connections with detachable slabs have been presented by Hu et al [30] and Nzabonimpa and Hong [31] which are able to pair steel plates connected by high-strength bolts for the transfer of axial load and moment. A hybrid frame method that incorporates the steel core at the joint regions was proposed by Park et al [32] which allow vertical reinforcements at the vertical splicing regions.…”

Section: Literature Reviewmentioning

confidence: 99%

An exhaustive research and analysis on seismic performance of prefabricated concrete shear wall structure

Chen¹,

Poongodi²

2020

J. vibroeng.

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In order to accelerate the process of building industrialization, improve the overall stability and construction quality of the building. In this paper, a bolted connection method is designed to study the seismic performance of the composite concrete shear wall specimens with horizontal split joints from the aspects of bearing capacity, ductility, energy dissipation, deformation capacity and failure mode. The test results show that the bolted concrete shear wall is feasible and the connectors can effectively connect the upper and lower precast shear walls to form a whole with certain lateral stiffness. The energy dissipation capacity of the specimens is similar to that of other prefabricated concrete shear wall structures with “self-reduction”. The displacement Angle is greater than 1/120 of the limit value of the displacement Angle between elastic-plastic layers under the action of large earthquakes, and the specimen has good deformation capacity. The energy dissipation capacity of the structure from dynamics perspective reveals that smaller capacity of the specimen by providing energy dissipation factor E= 0.24 and equivalent viscous damping coefficient of 0.038.

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Experimental investigation of precast concrete based dry mechanical column-column joints for precast concrete frames

Cited by 41 publications

References 22 publications

Part I: The Analytical Model Predicting Post-Yield Behavior of Concrete-Encased Steel Beams Considering Various Confinement Effects by Transverse Reinforcements and Steels

Part I: The Analytical Model Predicting Post-Yield Behavior of Concrete-Encased Steel Beams Considering Various Confinement Effects by Transverse Reinforcements and Steels

Strain evolution of L-shaped precast columns spliced by laminated metal plates, part I

An exhaustive research and analysis on seismic performance of prefabricated concrete shear wall structure

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