Influence of the constraint condition of column ends on seismic performance of a novel prefabricated concrete frame beam – An experimental and numerical investigation

Lv, Xiaoyong; Yu, Zhenkun; Shan, Zhi

doi:10.1016/j.engstruct.2020.111173

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…The area E of hysteretic loops and the equivalent viscous damping coefficient h e are commonly used to evaluate the energy dissipation capacity of structures [ 6 , 26 ]. Figure 15 a and Figure 15 b, respectively, depict the relationship curves of the accumulated energy dissipation and displacement load for PW1–PW6, and the equivalent viscous damping coefficient of all specimens in the ultimate stage.…”

Section: Resultsmentioning

confidence: 99%

“…[ 24 ]. In addition, different vertical connections for PC walls were also investigated, included loop connection, spiral-confined lap connection [ 25 , 26 ]. and unbonded post-tensioned connection [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

“…As mentioned previously, the reinforcement connection can be classified as three types of connection: full connection (double-row), partial connection (single row or staggered layout), and no connection (seat slurry), based on the connection type between the upper and lower layers. For this purpose, some novel connection joint methods were adopted by [ 24 , 25 , 26 , 27 , 31 ]. Liao et al [ 24 ] proposed a new type of monolithic assembled concrete shear wall structure with non-connected vertical distributed reinforcement, based on the load capacity of equal strength with the cast-in-place structure, and found that the proposed shear walls exhibit a similar bearing capacity, ductility, and energy dissipation to the cast-in-place shear wall.…”

Section: Introductionmentioning

confidence: 99%

“…To sum up, although there are numerous investigations on the connection properties of vertical joints [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ] and seismic performances [ 24 , 25 , 26 , 27 , 28 , 29 ] for precast concrete wall panel structural systems [ 8 , 37 , 38 , 39 ], they mainly focus on the high-rise building residential structure. However, there are few reports on precast concrete wall panel structures connected by the steel grouted sleeve connector and applied to low-rise or multi-story residential buildings [ 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Seismic Behavior of PC Walls with Alveolar-Type Horizontal Joint under Pseudo-Static Loading

Cheng

Luo

Cheng³

et al. 2022

Materials

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There are many horizontal joints on precast concrete (PC) wall panel structures, which certainly has a significant impact on the seismic behavior of structures. This paper proposes a novel alveolar-type horizontal joint, which has advantages of convenient and rapid assembly. Six precast concrete wall specimens with alveolar-type joints were designed and constructed, and they were weakly connected by spliced rebars anchored into grouted sleeves to meet the requirements of structural performance. The pseudo-static loading tests on these specimens were conducted to investigate the effects of influencing factors, such as the axial compression ratio, the thickness of wall (interface contact area), and the addition of a vertical grouted sleeve connection at the horizontal joint, on the seismic performance of PC walls. Analyses and comparisons were conducted in terms of the cracking propagation pattern, failure modes, force–displacement hysteretic curves, skeleton curves, bearing capacity, ductility factors, and energy dissipation of PC walls. It was concluded that the axial compression ratio and adding grouted sleeve connection had a significant influence on the cracking mode of PC walls, whereas the impact of the wall thickness was slight. The shear capacity and energy dissipation capacity of specimen dramatically enhanced by increasing the axial compression ratio or adding grouted sleeve connection. The PC wall exhibits good ductility after adding the vertical grouted sleeve connection at a horizontal joint. However, the ductility factor increases firstly and then decreases in the enhancement of the axial compression ratio. The reduction in wall thickness has remarkable impacts on the shear strength and energy dissipation capacity of specimens, but the influences on ductility were not significant. The prediction method for calculating the shear capacity of PC walls with alveolar-type horizontal joints was proposed based on the experimental data, and these calculated results are in good agreement with the experimental results.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Study on Seismic Behavior of PC Walls with Alveolar-Type Horizontal Joint under Pseudo-Static Loading

Cheng

Luo

Cheng³

et al. 2022

Materials

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“…At present, the software ABAQUS is adopted by many scholars to simulate the mechanical properties of beam–column joints under cyclic loading. However, no descending segment existed in the obtained hysteretic curves [ 31 , 32 ]. As a result, it is impossible to reflect whether the beam–column joint is invalid through the hysteretic curves.…”

Section: Finite Element Modelmentioning

confidence: 99%

Dynamic Behavior of a Precast and Partial Steel Joint under Various Shear Span-to-Depth Ratios

et al. 2021

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The dynamic behavior of a PPSRC beam–column joint is related to constraint effect, strength deterioration and strain rate effect. Then, it can be assessed by bearing capacity, stiffness degradation, displacement ductility and energy consumption. The results show that the increased strain rate causes growth in ring stiffness, bearing capacity and energy consumption of PPSRC beam–column joints. However, the influence of shear span-to-depth ratio on dynamic mechanical properties of PPSRC beam–column joints is more obvious than that of strain rate. Regardless of strain rate, the bearing capacity, initial stiffness, ring stiffness and energy consumption of PPSRC beam–column joints decrease as the shear span-to-depth ratio increases. Moreover, the ring stiffness under reverse direction is smaller than that the under forward direction at each displacement level. However, the stiffness degradation under a lower shear span-to-depth ratio is more obvious than that under a higher shear span-to-depth ratio. Moreover, the displacement ductility with a higher shear span-to-depth ratio is better than that with a lower shear span-to-depth ratio. Finally, the mechanical properties of PPSRC beam–column joints are affected by the extension length of partial steel plate, and the reasonable extension length of the partial steel plate in the column is affected by the shear span-to-depth ratio.

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Finite element analysis of precast concrete beam‐column joint based on bolt connection

Xu,

Li,

Zhang

2024

Structural Design Tall Build

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SummaryA novel proposal for an assembled bolted joint between a precast reinforced concrete beam and column is presented in this paper. In order to evaluate the behavior of the joint, a comprehensive experiment was carried out on a full‐scale precast concrete beam‐column joint based on bolted connection subjected to pseudo‐static loading. The experiment aims to investigate the failure mode, load carrying capacity, and energy dissipation characteristics of the joint. To further understand the performance of the joint, a finite element model was developed using ABAQUS. The difference in failure mode and ultimate bearing capacity between the bolted joints and cast‐in‐situ joints were analyzed in conjunction with the experimental results. Moreover, the impact of various parameters on the performance of the bolted joints was quantified. The characteristics of the bolted joints, such as the span‐depth ratio, reinforcement ratio of the beam, the stirrup ratio at the beam‐column junction, T‐end length, and the bolt strength grade, were meticulously analyzed through an examination of bearing capacity curve, stiffness degradation patterns, and energy dissipation capability. The results show that, in comparison with the traditional cast‐in‐situ joints, the damage failure extent exhibited by the bolted joints is notably smaller, thereby rendering it more advantageous for seismic restoration and replacement. Furthermore, the span‐depth ratio, reinforcement ratio of the beam, and the stirrup ratio have a greater influence on the seismic performance of bolted joints than the T‐end length and bolt strength grade.

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Influence of the constraint condition of column ends on seismic performance of a novel prefabricated concrete frame beam – An experimental and numerical investigation

Cited by 11 publications

References 34 publications

Experimental Study on Seismic Behavior of PC Walls with Alveolar-Type Horizontal Joint under Pseudo-Static Loading

Experimental Study on Seismic Behavior of PC Walls with Alveolar-Type Horizontal Joint under Pseudo-Static Loading

Dynamic Behavior of a Precast and Partial Steel Joint under Various Shear Span-to-Depth Ratios

Finite element analysis of precast concrete beam‐column joint based on bolt connection

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