Evaluation of RC Bridge Piers Retrofitted using Fiber-Reinforced Polymer (FRP)

2008 ◽  
Author(s):  
M. A. Shayanfar ◽  
M. S. Zarrabian ◽  
Adolfo Santini ◽  
Nicola Moraci
Keyword(s):  
Fiber Reinforced Polymer ◽  
Bridge Piers ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Rc Bridge Piers

scholarly journals Study on Repaired Earthquake-Damaged Bridge Piers under Seismic Load

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jun Deng ◽  
Tonghua Liu ◽  
Weizhi Xie ◽  
Wei Lu
Keyword(s):  
Peak Load ◽  
Steel Tube ◽  
Fiber Reinforced Polymer ◽  
Bridge Piers ◽  
Seismic Load ◽  
Concrete Bridge ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Repair Materials ◽  
Rc Bridge Piers

The concrete bridge pier damaged during earthquakes need be repaired to meet the design standards. Steel tube as a traditional material or FRP as a novel material has become popular to repair the damaged reinforced concrete (RC) bridge piers. In this paper, experimental and finite element (FE) studies are employed to analyze the confinement effectiveness of the different repair materials. The FE method was used to calculate the hysteretic behavior of three predamaged circle RC bridge piers repaired with steel tube, basalt fiber reinforced polymer (BFRP), and carbon fiber reinforced polymer (CFRP), respectively. Meanwhile, the repaired predamaged circle concrete bridge piers were tested by pseudo-static cyclic loading to study the seismic behavior and evaluate the confinement effectiveness of the different repair materials and techniques. The FE analysis and experimental results showed that the repaired piers had similar hysteretic curves with the original specimens and all the three repair techniques can restore the seismic performance of the earthquake-damaged piers. Steel tube jacketing can significantly improve the lateral stiffness and peak load of the damaged pier, while the BFRP and CFRP sheets cannot improve these properties due to their thin thickness.

Seismic Behavior of Severe Damaged GFRP Tubed RC Bridge Piers Repaired with CFRP

2012 ◽  
Vol 256-259 ◽  
pp. 2168-2173
Author(s):  
Xuan Wang ◽  
Ce Wang
Keyword(s):  
Seismic Behavior ◽  
Lateral Displacement ◽  
Fiber Reinforced Polymer ◽  
Bridge Piers ◽  
Fiber Reinforced ◽  
Cfrp Sheets ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Seismic Force ◽  
Rc Bridge Piers

In order to investigate the seismic behavior of earthquake-damaged glass fiber reinforced polymer (GFRP) tubed reinforced concrete(RC) bridge piers repaired with wrapped carbon fiber reinforced polymer (CFRP) sheets. An experimental study, in which four GFRP tubed RC bridge piers repaired with wrapped CFRP sheets were tested under constant axial load and cyclic lateral displacement excursions that simulated seismic force,are presented in this study. Researches show that repaired with CFRP not only increase bridge piers’ultimate strength but also improve the performance such as ductility.

Restoring Initially Cracked Reinforced Concrete Beams utilizing Carbon Fiber Reinforced Polymer Strips

2019 ◽  
Vol 7 (1) ◽  
pp. 30-34
Author(s):  
A. Ajwad ◽  
U. Ilyas ◽  
N. Khadim ◽  
Abdullah ◽  
M.U. Rashid ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Loading Test ◽  
Control Beam ◽  
Reinforced Polymer ◽  
Cfrp Sheet ◽  
Carbon Fiber Reinforced

Carbon fiber reinforced polymer (CFRP) strips are widely used all over the globe as a repair and strengthening material for concrete elements. This paper looks at comparison of numerous methods to rehabilitate concrete beams with the use of CFRP sheet strips. This research work consists of 4 under-reinforced, properly cured RCC beams under two point loading test. One beam was loaded till failure, which was considered the control beam for comparison. Other 3 beams were load till the appearance of initial crack, which normally occurred at third-quarters of failure load and then repaired with different ratios and design of CFRP sheet strips. Afterwards, the repaired beams were loaded again till failure and the results were compared with control beam. Deflections and ultimate load were noted for all concrete beams. It was found out the use of CFRP sheet strips did increase the maximum load bearing capacity of cracked beams, although their behavior was more brittle as compared with control beam.

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