The Effects of De-Bonding of Longitudinal Rebars and Its Anchoring at Center of Span on Structural Behavior of RC Beam with a Guaranteed Hinge Position under Antisymmetric Bending

2021 ◽  
Vol 21 (5) ◽  
pp. 5_58-5_78
Author(s):  
Yusuke MAIDA ◽  
Kazuki MASUDA ◽  
Hiroyasu SAKATA ◽  
Toshio MAEGAWA ◽  
Tsubasa HATTORI
Keyword(s):  
Structural Behavior ◽  
Rc Beam ◽  
Hinge Position

scholarly journals THE EFFECTS OF DE-BOND OF LONGITUDINAL REBARS ON STRUCTURAL BEHAVIOR OF RC BEAM WITH A GUARANTEED HINGE POSITION

2021 ◽  
Vol 27 (65) ◽  
pp. 231-236
Author(s):  
Yusuke MAIDA ◽  
Kazuki MASUDA ◽  
Yuki SATO ◽  
Hiroyasu SAKATA ◽  
Toshio MAEGAWA ◽  
...  
Keyword(s):  
Structural Behavior ◽  
Rc Beam ◽  
Hinge Position

Structural Behavior of Reinforced Concrete Beams Strengthened with Carbon Fiber Reinforcement Polymer Plate

2013 ◽  
Vol 302 ◽  
pp. 338-342
Author(s):  
Soo Yeon Seo
Keyword(s):  
Carbon Fiber ◽  
Fiber Reinforcement ◽  
Reinforced Concrete Beams ◽  
Structural Behavior ◽  
Rc Beam ◽  
Near Surface ◽  
Cfrp Plate ◽  
Carbon Fiber Reinforcement ◽  
Externally Bonded ◽  
Near Surface Mounted

This paper presents the study to find retrofit effect in case of Near-Surface-Mounted Retrofit (NSMR) using Carbon Fiber Reinforcement Polymer (CFRP) plate targeting reinforcement concrete (RC) beam by comparing the previous Externally Bonded Retrofit (EBR) method through experimental analytical works. Three RC beam specimens were made and two of them were retrofitted with CFRP plate by using EBR and NSMR. Also Finite Element (FE) analysis was performed in order to simulate the structural behavior of the beams by considering the bond properties between concrete and CFRP. From the study, it was found that the beam retrofitted with EBR hada reduction of bond capacity in the joint while the beam retrofitted with NSMR had perfect bond capacity.

FE Analysis on the Structural Behavior of Reinforced Concrete Beam Damaged by Fire

2013 ◽  
Vol 351-352 ◽  
pp. 743-746
Author(s):  
Soo Yeon Seo ◽  
Yu Gun Chung
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Fe Analysis ◽  
Structural Behavior ◽  
Rc Beam ◽  
Support Condition ◽  
Strength Deterioration ◽  
Simple Support ◽  
Analytical Result

This paper presents an analytical result about strength deterioration of reinforced concrete (RC) beams due to damage by fire. For the evaluation of the result, three RC beam specimens were made and two of those were exposed to fire. And then beam test was performed for those including non-heated specimen to evaluate the strength deterioration due to the fire damage under simple support condition. Strength decrease of materials due to the fire was evaluated through material test for concrete and reinforcements, respectively. Nonlinear Finite element (FE) analysis was performed by considering the decrease of materials due to fire. The analysis results showed that the structural behavior of fire-damaged RC beam was able to be simulated by using FE analysis with consideration of the reduction of material capacity due to fire.

scholarly journals Evaluation of Flexural Behavior of Textile-Reinforced Mortar-Strengthened RC Beam Considering Strengthening Limit

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6473
Author(s):  
Jongho Park ◽  
Sun-Kyu Park ◽  
Sungnam Hong
Keyword(s):  
Inorganic Materials ◽  
Flexural Behavior ◽  
Structural Behavior ◽  
Rc Beam ◽  
Premature Failure ◽  
Rc Structures ◽  
Beam Strengthening ◽  
Textile Reinforced Mortar ◽  
Inorganic Matrix ◽  
Limit Coefficient

Textile-reinforced mortar (TRM) is a strengthening material in which textiles are attached to reinforced concrete (RC) structures using an inorganic matrix. Although many studies on structural behavior, various factors that affect TRM behavior could not be determined clearly. Especially, the uncertainty in bonds due to inorganic materials was not considered. In this study, the flexural behavior of TRM-strengthened beams was determined considering intermediate crack debonding occurred. The TRM beam strengthening limit and TRM coefficients were defined considering the possibility of premature failure and experimental results of four other research on 22 specimens. Therefore, it is expected that a conservative design would be possible when the suggested strengthening limit coefficient is applied.

scholarly journals FINITE ELEMENT ANALYSIS OF RC BEAM WITH A GUARANTEED HINGE POSITION HAVING DE-BONDING OF LONGITUDINAL REBARS

2021 ◽  
Vol 27 (67) ◽  
pp. 1267-1272
Author(s):  
Yusuke MAIDA ◽  
Yuki SATO ◽  
Kazuki MASUDA ◽  
Hiroyasu SAKATA ◽  
Toshio MAEGAWA ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Rc Beam ◽  
Element Analysis ◽  
Hinge Position

Effects of loading regimes on the structural behavior of RC beam-column sub-assemblages against disproportionate collapse

2022 ◽  
Vol 251 ◽  
pp. 113470
Author(s):  
Kai Qian ◽  
Song-Yuan Geng ◽  
Shi-Lin Liang ◽  
Feng Fu ◽  
Jun Yu
Keyword(s):  
Structural Behavior ◽  
Rc Beam ◽  
Disproportionate Collapse

A Numerical Evaluation of Insulated CFRP-Strengthened RC Beams Exposed to Fire

2013 ◽  
Vol 742 ◽  
pp. 62-69
Author(s):  
Baris Sayin ◽  
Erdem Damcı
Keyword(s):  
Numerical Evaluation ◽  
Elevated Temperatures ◽  
Fire Behavior ◽  
Element Model ◽  
The Other ◽  
Structural Behavior ◽  
External Loading ◽  
Rc Beam ◽  
Rc Beams ◽  
Fire Performance

There are mainly two approaches to improve the fire resistance of FRP systems. While the most common way is to protect or insulate the FRP systems, the other way is to use fibers and resins with better fire-performance. In this paper a numerical investigation for evaluating the fire behavior of insulated CFRP-strengthened RC beams is presented.The effects of external loading and thermal expansion of materials in both the structural and the thermal behavior of composite elements due to loading and elevated temperatures are taken into consideration in a finite element model. The validity of the numerical model isdemonstrated withthe results from an existing experimental study on insulated CFRP-strengthened RC beam. The conclusions of this investigation have been employed to predict the structural behavior of concrete structures successfully.

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