Seismic behavior of precast concrete <scp>beam‐column</scp> connections with bolt connectors in columns

Xue, Wei; Bai, H. Sharada; Dai, Lingjie; Hu, Xiang; Dubec, Miroslav

doi:10.1002/suco.202000007

Cited by 16 publications

(8 citation statements)

References 18 publications

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“…In general, the tri-linear model has been able to reflect the nonlinearity of members approximately, and is extensively used [17]. In this paper, the four-linear model was adopted [18]. By adding an elastic limit control point (point A in Figure 1) before the yielding of the member, the elastic stiffness information can be expressed more accurately.…”

Section: Proposed Methodsmentioning

confidence: 99%

Quantification of Moment–Rotation Relationship of Monolithic Precast Beam–Column Connections

Song

et al. 2021

Buildings

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The accurate prediction of nonlinear structural behaviors under different seismic intensities is an important basis for seismic resilience assessments of building structures. The moment–rotation relationship is often used to characterize the seismic performance of connections, and is widely used in high-efficiency nonlinear structural analysis. In this paper, a method of calculating the curve using a four-linear equivalent model is presented, aiming to quantify the characteristic point parameters of the moment–rotation curves of monolithic precast beam–column (MPBC) connections for engineering design purposes. The method considered the contribution of the elastic flexure of beams and columns, the relative slip of beam longitudinal bars in the core zone, and the formation of plastic hinges at beam ends to the total deflection. Due to the presence of local complex configurations in MPBC connections, the fine fiber section method was used for moment–curvature analysis of critical beam sections. The determination of the sectional analysis processes was controlled by the strain of steel bars or concrete or their coupling effect. In addition, a two-step method was proposed to construct the moment–rotation relationship of cruciform beam–column connections for solving the deformation compatibility of beams on both sides of the column caused by asymmetric reinforcement and the strength difference between new and old concrete. To reflect the current manufacturing level of MPBC connections, 58 representative specimens reported in recent years were analyzed and classified as type 1–5. All types of MPBC connections and their 18 cast-in situ counterparts were calculated using the proposed method for both verification and quantification. The verification showed that the proposed method had good applicability to both cast-in situ and precast beam–column connections. The quantification showed that the characteristic point parameters were slightly different between these two connections. Accordingly, modification coefficients were suggested for MPBC connections to facilitate design.

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Section: Proposed Methodsmentioning

confidence: 99%

Quantification of Moment–Rotation Relationship of Monolithic Precast Beam–Column Connections

Song

et al. 2021

Buildings

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“…For example, Xue at al. 16) conducted experimental work on seismic behavior of precast concrete beam-column connections. Meanwhile, Lu and Wu 17) studied on seismic performance of prestressed precast concrete walls through cyclic lateral loading test.…”

Section: Experimental Work On Precast Concrete Systemmentioning

confidence: 99%

Development of Numerical Model of a High Performance Precast Concrete System Equipped with Base Isolation

Nurjaman¹,

Suwito²,

Dinariana³

et al. 2022

Evergreen

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This study focuses on combining precast concrete system and base isolation technique that could lead to a high-performance seismic resistance structural system. Some previous experimental results on precast concrete modules are presented and discussed. Principles and numerical implementation of base isolation technique are described and presented in details. Analysis of life cycle cost that compares the conventional system and a system that combines precast concrete system and base isolation technique shows promising results. The result from this study is a structural system that has high seismic performance and cost efficiency for certain class of structures and site conditions.

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“…As an important connection method for prefabricated concrete (PC) building components, the grouted sleeve connection has many merits in high safety, strong reliability, simple installation and low cost over other connection modes (e.g. slurry anchor lap connection, bolt connection, and welding) [1][2][3]. For the PC building, the quality of the connection usually has a significant impact on the safety of the entire building.…”

Section: Introductionmentioning

confidence: 99%

The measurement of internal defect in the half-grouted sleeves by low frequency ultrasonics

Zhang

Tang

Zeng

et al. 2023

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII

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Half grouted sleeve connection has been widely used in the rebars connection of prefabricated concrete (PC) structure. Mostly, the implementation of grouted should be finished on site. Meanwhile, the internal defects are inevitable due to the concrete nature. Currently, there is few methods available, which can effectively and rapidly evaluate the quality of the connection. Therefore, in this paper, we propose a combination of low-frequency linear ultrasound (LUT) and nonlinear ultrasound (NLUT) to quantitatively characterize defect. The internal artificial defects are concentrated defects, and the defect content is 10%, 20%, 30% and 40% respectively. Through transmission mode was adapted for both LUT and NLUT. The UT wave propagation was distorted by different defects, which was the results of LUT. For NLUT with higher resolution, the complex distribution and different level of defect together will introduce nonlinearity. The experimental results show that the grouted defects reduce the ultrasonic energy of LUT, and increase the nonlinearity from NLUT with the increase of the defect size and randomness. The defect has a significant impact on the ultrasonic features. Therefore, Low-frequency LUT and NLUT methods are potential to realize the visualization the defects of half grouted sleeve connection.

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Seismic behavior of precast concrete beam‐column connections with bolt connectors in columns

Cited by 16 publications

References 18 publications

Quantification of Moment–Rotation Relationship of Monolithic Precast Beam–Column Connections

Quantification of Moment–Rotation Relationship of Monolithic Precast Beam–Column Connections

Development of Numerical Model of a High Performance Precast Concrete System Equipped with Base Isolation

The measurement of internal defect in the half-grouted sleeves by low frequency ultrasonics

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