Serviceability of Reinforced Concrete Beams Under High-Cycle Fatigue Loading

2010 ◽  
Author(s):  
Carlos Zanuy ◽  
Luis Albajar ◽  
Pablo De La Fuente
Keyword(s):  
Reinforced Concrete ◽  
High Cycle Fatigue ◽  
Concrete Beams ◽  
Fatigue Loading ◽  
Reinforced Concrete Beams ◽  
Cycle Fatigue

Fatigue Life Prediction of Corroded Reinforced Concrete Beams under Repeated Loads

2011 ◽  
Vol 255-260 ◽  
pp. 504-508
Author(s):  
Li Song ◽  
Zhi Wu Yu
Keyword(s):  
Reinforced Concrete ◽  
Fatigue Life ◽  
Life Prediction ◽  
High Cycle Fatigue ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Repeated Loading ◽  
Test Results ◽  
Cycle Fatigue ◽  
Repeated Loads

The behavior of materials under repeated loading has been examined, but extended studies are more and more needed especially for damaged reinforced structures such as bridges, where high-cycle fatigue phenomena and corrosion can be significant. In the present paper, a theoretical model based on fatigue performance of materials and stress analysis for cross-section is proposed in order to analyze the fatigue damage of corroded reinforced concrete beams under repeated loads. Further, fatigue life is predicted by applying this method, and the method is evaluated by test results.

scholarly journals Fatigue Crack Inspection and Acoustic Emission Characteristics of Precast RC Beam under Repetition Loading

2015 ◽  
Vol 773-774 ◽  
pp. 1022-1026 ◽  
Author(s):  
Md Noor Noorsuhada ◽  
Ibrahim Azmi ◽  
Muhamad Bunnori Norazura ◽  
Mohd Saman Hamidah ◽  
Mat Saliah Soffian Noor ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fatigue Crack ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Signal Strength ◽  
Fatigue Loading ◽  
Reinforced Concrete Beam ◽  
Crack Pattern ◽  
Reinforced Concrete Beams

Fatigue crack of the precast reinforced concrete beam under repetition loading is vital to be examined. Reinforced concrete structures exposed to excessive repetition loading could lead to the failure of the structures. In order to examine the active fatigue crack, the reinforced concrete beams were subjected to three-point repetition maximum loading. Eight phases of maximum fatigue loading with sinusoidal wave, frequency of 1 Hz and 5000 cycles for each phase were performed on the reinforced concrete beams. The inspection was carried out with visual observation of the crack pattern and acoustic emission technique for each load phase. The signal strength of acoustic emission was investigated. It is found that the signal strength of acoustic emission and crack pattern of the reinforced concrete beam subjected to repetition loadings showed promising results for structural health monitoring.

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