scholarly journals Post-earthquake repair and strengthening of reinforced concrete beam-column connections

2003 ◽  
Vol 36 (2) ◽  
pp. 73-93 ◽  
Author(s):  
Alexander G. Tsonos ◽  
Konstantinos V. Papanikolaou
Keyword(s):  
Reinforced Concrete ◽  
Industrial Development ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Injection Technique ◽  
Eurocode 8 ◽  
Strong Earthquakes ◽  
Development Organization ◽  
Replacement Technique ◽  
Column Joint

In this study the effectiveness of all the repair and strengthening techniques proposed by the United Nations Industrial Development Organization (UNIDO) Manual and by Eurocode 8: part 1-4 for reinforced concrete beam-column joints damaged by strong earthquakes is investigated experimentally and analytically. Five one-half-scale exterior beam-column joint specimens were submitted to reverse cyclic pseudo-static displacements. Three of these specimens were then repaired by the epoxy pressure injection technique or by the removal and replacement technique. The other two specimens were strengthened by partial three-sided jacketing. All the repaired and strengthened specimens were then subjected to the same displacement history as that imposed on the original specimens. It can be concluded that all the repair and strengthening techniques proved to be satisfactory.

Deformation Characteristics of Reinforced Concrete Beam-Column Joint Cores under Earthquake Loading

2003 ◽  
Vol 6 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Sayed A. Attaalla ◽  
Mehran Agbabian
Keyword(s):  
Reinforced Concrete ◽  
Shear Deformation ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Reinforced Concrete Frame ◽  
Bond Failure ◽  
Strain Compatibility ◽  
Concrete Frame ◽  
Column Joint ◽  
Reinforced Concrete Frame Structures

The characteristics of the shear deformation inside the beam-column joint core of reinforced concrete frame structures subjected to seismic loading are discussed in this paper. The paper presents the formulation of an analytical model based on experimental observations. The model is intended to predict the expansions of beam-column joint core in the horizontal and vertical directions. The model describes the strain compatibility inside the joint in an average sense. Its predictions are verified utilizing experimental measurements obtained from tests conducted on beam-column connections. The model is found to adequately predict the components of shear deformation in the joint core and satisfactorily estimates the average strains in the joint hoops up to bond failure. The model may be considered as a simple, yet, important step towards analytical understanding of the sophisticated shear mechanism inside the joint and may be implemented in a controlled-deformation design technique of the joint.

Seismic performance of reinforced concrete beam–column joint strengthening by frp sheets

Structures ◽  
2019 ◽  
Vol 20 ◽  
pp. 353-364 ◽  
Author(s):  
Nassereddine Attari ◽  
Youcef Si Youcef ◽  
Sofiane Amziane
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Column Joint

scholarly journals Cyclic behavior of ultra-high performance fiber reinforced concrete beam-column joint

2018 ◽  
Vol 20 (1) ◽  
pp. 348-360 ◽  
Author(s):  
Patricia A. Sarmiento ◽  
Benjamín Torres ◽  
Daniel M. Ruiz ◽  
Yezid A. Alvarado ◽  
Isabel Gasch ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Fiber Reinforced Concrete ◽  
Cyclic Behavior ◽  
Fiber Reinforced ◽  
High Performance Fiber ◽  
Column Joint

Modeling bond-slip deformations in reinforced concrete beam-column joints

2000 ◽  
Vol 27 (3) ◽  
pp. 490-505 ◽  
Author(s):  
Mostafa Elmorsi ◽  
M Reza Kianoush ◽  
W K Tso
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
Element Model ◽  
Reinforced Concrete Beam ◽  
Experimental Results ◽  
Reinforcing Bars ◽  
Bond Slip ◽  
Joint Element ◽  
Column Joint

A new finite element model for reinforced concrete beam-column joints is proposed. The model considers the effects of bond-slip and shear deformations in the joint panel region. The problems associated with modeling bond-slip of anchored reinforcing bars are discussed. The proposed bond-slip model is examined at the element level by comparing its predictions with other analytical and experimental results. The ability of the model to simulate bond deterioration and eventual pullout of anchored reinforcing bars under severe cyclic excitation is demonstrated. This model is incorporated into the global beam-column joint element. Further comparisons are made between the predictions of the proposed beam-column joint model and other analytical and experimental results under reversed cyclic loading to show the validity of the model to describe the bond-slip behavior of the joints.Key words: bond, bond-slip, finite element, beam-column, reinforced concrete, cyclic.

Experimental study of a novel precast prestressed reinforced concrete beam-to-column joint

2018 ◽  
Vol 156 ◽  
pp. 68-81 ◽  
Author(s):  
Haishen Wang ◽  
Edoardo M. Marino ◽  
Peng Pan ◽  
Hang Liu ◽  
Xin Nie
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Column Joint
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