Behavior of Precast Concrete Beam-to-Column Connection with U- and L-bent Bar Anchorages Placed Outside the Column Panel–experimental Study

Wahjudi, Dicky Imam; Suprobo, Priyo; Sugihardjo, Hidajat; Tavio,

doi:10.1016/j.proeng.2014.12.171

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…The precast concrete method currently we know also has disadvantages [8,9]. Some obstacles include the joint casting and the grouting of the reinforcement connection [10].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, there is still a potential issue i.e. the use of highstrength steel bars as longitudinal reinforcement (> fy 550 MPa) in beams or columns might also lead to a significant influence on the structural strength and ductility, thus additional construction costs [7].The precast concrete method currently we know also has disadvantages [8,9]. Some obstacles include the joint casting and the grouting of the reinforcement connection [10].…”

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confidence: 99%

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Innovative bolted-steel box for seismic-resistant dry-precast concrete beam-column connection

Prasetya

Tavio²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Currently, many buildings are constructed with precast concrete methods. However, they still use the cast in-situ method, especially for the beam and column connection system where there are some obstacles in the casting process and the possibility of installing the reinforcement bars on site not following the design. Hence, there is potential for structural failure in that part of the connection. To reduce the connection constraints, it is proposed that the method of connecting precast concrete with an innovative connection system that is simple, lightweight, fast in the manufacturing process, can be constructed quickly and effectively on-site, and easily meets the specifications of connection quality. This proposed type of connection is a dry joint type that only uses bolts for the connection system with steel box components. This study will prove that the dry joint system can receive the moment and shear load due to earthquakes still in the elastic phase, not experiencing plasticity. The concept of connection planning does not change the concept of the Special Moment Frame System which applies the concept of Strong Column Weak Beam and Plastic Hinges. The connection is ensured in strong conditions, there is no yielding and damage at the time of a large earthquake, so the failure is not in the connection but occurs in the precast concrete block element that is at the end of the beam outside the planned connection in flexural failure with ductile behavior, not shear failure.

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“…The precast concrete method currently we know also has disadvantages [8,9]. Some obstacles include the joint casting and the grouting of the reinforcement connection [10].…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Innovative bolted-steel box for seismic-resistant dry-precast concrete beam-column connection

Prasetya

Tavio²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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show abstract

“…Concrete building structures located in earthquake-prone regions have higher risk than others [1,2]. Earthquakes often claim many lives due to the collapse of the buildings.…”

Section: Introductionmentioning

confidence: 99%

Experimental Load-Drift Relations of Concrete Beam Reinforced and Confined With High-Strength Steel Bars Under Reversed Cyclic Loading

Anggraini

Tavio

Raka

et al. 2021

AEJ

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High-strength steel bars have different characteristics from normal-strength steel bars. Thus, the use of high-strength steel bars still needs to be investigated further before it can be used confidently in concrete structures. In the design, a reinforced concrete beam should also have enough ductility besides its loading capacity. One of the indicators identifies that a structure has sufficient ductility is its ability to maintain the load steadily due to progressive deformation. This paper presents the test results of three reinforced concrete beams designed with concrete strength (fc) of 30 MPa. Two different yield strengths (fy) of longitudinal and transverse reinforcements were used, namely, 420 and 550 MPa. The cross-sectional dimensions of the beams were 200  300 mm with a total span of 2000 mm and a rigid stub at the midspan. The beams were simply supported by double rollers at their tops and bottoms. These special supports were located at both ends of the beams. The load applied at the midspan of the beam through the rigid stub with the displacement control. The loading pattern protocol by the drift was set from 0 to 5.5 percent. Based on the test results, it can be seen that the beams with high-strength steel bars could achieve a higher load capacity than the beams with normal-strength steel bars. On the other hand, the beams with high-strength steel bars produced lower deflection than the beams with normal-strength steel bars. Furthermore, it can be concluded that all the beams could withstand the minimum required of 3.5 percent. None of the beams indicated brittle failures. All of the beams could survived until the end of the cycles at a drift of 5.5 percent. This condition indicates that the reinforced concrete beams with higher-strength reinforcement (fy of 550 MPa) could also maintain their load capacities under large deformation beyond the first yielding of the longitudinal steel bars.

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Experimental study on effect of length of service hole on seismic behavior of exterior precast beam–column connections

Liu

Cai

Deng

et al. 2018

Structural Concrete

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Experimental study is reported on the seismic behavior of a type of exterior beamcolumn connections, which feature service holes in the connecting ends of the beams. Specimens with three typical lengths of the holes (450, 500, and 400 mm) are tested under quasi-static reversed cyclic loading with constant axial compression on columns. Failure modes, hysteretic and skeleton curves, energy dissipation capacity and ductility are investigated and effect of the length of the hole on the seismic behavior of the connection is studied. The results reveal satisfactory seismic performance of the connections with plastic hinges developed at the connecting ends of the beams and no damage to the joint regions. Comparisons between the specimens demonstrate that the connection with 500-mm long hole performs the greatest energy dissipation capacity and the greatest ductility with comparable load-carrying capacity to the connection with 400-mm long hole. Finally, it is feasible and reliable to follow the Chinese code to predict the load-carrying capacity of the connection, when the longitudinal reinforcement is symmetrically arranged. K E Y W O R D Sbeam-column connection, cyclic load, precast concrete, seismic behavior, test, U-shape

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Behavior of Precast Concrete Beam-to-Column Connection with U- and L-bent Bar Anchorages Placed Outside the Column Panel–experimental Study

Cited by 10 publications

References 2 publications

Innovative bolted-steel box for seismic-resistant dry-precast concrete beam-column connection

Innovative bolted-steel box for seismic-resistant dry-precast concrete beam-column connection

Experimental Load-Drift Relations of Concrete Beam Reinforced and Confined With High-Strength Steel Bars Under Reversed Cyclic Loading

Experimental study on effect of length of service hole on seismic behavior of exterior precast beam–column connections

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