Beam-column joints in continuous RC frames: Comparison between cast-in-situ and precast solutions

Breccolotti, Marco; Gentile, Santino; Tommasini, Mauro; Bonfigli, Massimo Federico; Pasqualini, Bruno; Colone, Valerio; Gianesini, Marco

doi:10.1016/j.engstruct.2016.08.018

Cited by 92 publications

(29 citation statements)

References 24 publications

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“…Moreover, the connection located at the joint core area also destroys the continuity of the column at the joint core, which may reduce the column performance. Therefore, some scholars have tried to move the connection location away from the joint core to the beam end as shown in Figure b and let the joint core area be precast with the column in the factory . However, there is still a problem for this kind of connection.…”

Section: Introductionmentioning

confidence: 99%

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Feng

Xiong

Chen

et al. 2018

Structural Design Tall Build

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Summary For the precast structure with postcast connections, the location of the connection is usually the midspan of the beam, joint core, and beam end. However, the postcast connections located at the midspan of the beam or the joint core would increase the difficulty of construction because of the large dimension of the precast components or reinforcement congestion at joint core, respectively. A connection located at the beam end could decrease the seismic performance the energy dissipation mechanism being disturbed. To balance the requirements on the transportation, construction, and seismic performance, the connection is proposed to be located at one plastic hinge length from the beam end. A quasi‐static test was conducted on three 6 m × 3 m beam‐column joints, including two precast joints and a monolithic joint. The results show that the joint with connections located outside the plastic hinge zone had good seismic performance. When the connection located at the beam end, the ductility, strength, and energy dissipation reduced 8%, 10%, and 30%, respectively. To optimize the postcast location, finite element analysis was conducted and 2h was suggested for the postcast location according to the analysis results.

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Section: Introductionmentioning

confidence: 99%

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Feng

Xiong

Chen

et al. 2018

Structural Design Tall Build

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“…According to Breccoletti, et al [4], precast use has several advantages over cast-in-site such as lower production and cost times, as well as better quality control. However, precast is usually difficult to behave as SRPM as in the cast in-site system.…”

Section: The Beam-column Joint In Precast Structuresmentioning

confidence: 99%

Comparative study of behaviour of reinforced concrete beam-column joints with reference to monolithic and non-monolithic connection

Yuliati¹,

Murni²,

Wisnumurti³

et al. 2018

MATEC Web Conf.

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The implementation method of reinforced concrete construction has progressed very rapidly. This development aims to speed up time and reduce costs. One of the most widely used methods is the precast method, but the less popular precast method is used for simple storey buildings. Therefore, in this study the semi-precast method, which is easy to implement in a simple storey building, was presented. Parts of columns and beams were cast in place with different casting times. Therefore, the connection become non-monolithic. This study presented a comparison between the deflection and the static load capacity that can be received by the connection of reinforced concrete beam-column which is monolithically connected and non- monolithic. 3 sets of specimens were made to represent monolithic and non-monolithic specimens. The nonmonolithic specimens were made with 2 models, i.e. without and with a notch. The beam-column connections were tested experimentally and compared to the monolithic beam-column connection. The results showed that the notch on non-monolithic test specimens can increase the load capacity and reduce deflection compared to the specimen test without notch. The experimental results also showed that the strength and performance of structural non-monolithic beam-column connections were as good as those of monolithic beam-column joints.

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“…Precast concrete structures are increasingly replacing conventional concrete structures because of their remarkable advantages, such as shorter construction time, lower cost, less energy consumption, better quality of the components, and easier quality control [1,2]. However, the complexity and efficiency of the connection of steel bars between precast concrete structural members may hinder widespread application of precast concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behaviour of grouted sleeve splice under uniaxial tensile loading

Lü

Huang

et al. 2019

Engineering Structures

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This paper presents an experimental and analytical study on mechanical behaviour of two kinds of new low-cost grouted sleeves processed by seamless steel pipe, i.e., grouted sleeve with wedge and grouted sleeve with wedge and thread, under uniaxial tension. In total, twenty-two rebar splice specimens with various embedded lengths, spliced bar diameters and wedge lengths are prepared and tested. The test results indicate that the performance of both grouted splices meets the requirements of ACI318 and JGJ107. The required embedded length of rebar in the splice is found to be around 6-6.4 times the spliced bar diameter due to confinement effect. The tensile capacity of the splice increases with increasing diameter of the anchorage segment of the spliced bar, and length and slope of the wedge at both ends of the sleeve. Because of the good performance of wedges threads do not significantly improve the tensile capacity of the sleeve but improve the bond strength and bearing capacity in non-wedge segment of the sleeve. The tensile capacity of the specimen is slightly lower than that of steel bar and the reduction coefficient of bearing capacity is estimated. An analytical model is proposed to predict the tensile capacity of grouted sleeves considering the effects of confinement and reduction of tensile capacity of the splices, the predictions of which are in good agreement with experimental data.

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Beam-column joints in continuous RC frames: Comparison between cast-in-situ and precast solutions

Cited by 92 publications

References 24 publications

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Comparative study of behaviour of reinforced concrete beam-column joints with reference to monolithic and non-monolithic connection

Mechanical behaviour of grouted sleeve splice under uniaxial tensile loading

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