Shear fatigue strength of reinforced concrete members without transverse reinforcement according to the compression chord capacity model

Predicción a largo plazo de la resistencia a cortante de vigas de hormigón armado basada en un modelo mecánico considerando la corrosión de la armadura

“…El Compresion Chord Capacity Model (CCCM) [13] es un modelo mecánico de resistencia a cortante orientado a proyecto basado en otro modelo analítico más complejo (el Multi-Action Shear Model (MASM) [14]). Ambos modelos han demostrado ser excepcionalmente versátiles al adaptarse a distintas situaciones ofreciendo resultados satisfactorios para elementos esbeltos de hormigón armado y pretensado con sección rectangular o en T [13], vigas no esbeltas [15], vigas de hormigón reforzadas con fibras de acero sin cercos [16], vigas reforzadas con barras de polímero reforzado con fibras (FRP) [17], vigas reforzadas externamente a cortante utilizando aleaciones con memoria de forma [18,19] y elementos de hormigón armado sometidos a cargas de fatiga [20]. Recientemente, el CCCM ha sido también validado para la predicción de la resistencia a cortante para vigas de hormigón esbeltas, y no esbeltas, con armaduras corroídas [21].…”

Long‐term shear strength of RC beams based on a mechanical model that considers reinforcing steel corrosion

“…14 Both models have proven exceptional versatility to be adapted to significantly diverse situations, and offer satisfactory results for slender reinforced and prestressed concrete members with rectangular or T-cross-sections, 13 nonslender beams, 15 steel fiber RC beams without stirrups, 16 beams reinforced with fiber-reinforced polymer bars, 17 beams externally strengthened upon shear using shape memory alloys 18,19 and RC beams subjected to fatigue loads. 20 Recently, the CCCM was validated for the shear strength prediction of corrosion-damaged RC slender nonslender beams. 21 For this purpose, the model parameters that could be most affected by steel corrosion in RC beams were identified and accordingly modified.…”

“…The Compression Chord Capacity Model (CCCM) 13 is a shear design‐oriented mechanical model based on a more complex analytical model (the multiaction shear model) 14 . Both models have proven exceptional versatility to be adapted to significantly diverse situations, and offer satisfactory results for slender reinforced and prestressed concrete members with rectangular or T‐cross‐sections, 13 nonslender beams, 15 steel fiber RC beams without stirrups, 16 beams reinforced with fiber‐reinforced polymer bars, 17 beams externally strengthened upon shear using shape memory alloys 18,19 and RC beams subjected to fatigue loads 20 . Recently, the CCCM was validated for the shear strength prediction of corrosion‐damaged RC slender nonslender beams 21 .…”

Residual strength of concrete subjected to fatigue based on machine learning technique

“…Satisfactory performance is essentially required under long-term and sustained loading conditions with various intensity and frequency. [1][2][3] However, detrimental effects of fatigue in terms of strength, deformation capacity, and durability performance have not been fully explored yet, especially for safe structural design of fatigue-sensitive bridges and industrial buildings. 4 The internal resistance mechanism in an RC member basically originates from two components: compressive resistance provided by concrete and its counterpart provided by reinforcements in tension.…”

“…Serious consequence of fatigue failure is anticipated, and thus it is considered as one of the critical issues in the built environment made of concrete despite long lasting research efforts. Satisfactory performance is essentially required under long‐term and sustained loading conditions with various intensity and frequency 1–3 . However, detrimental effects of fatigue in terms of strength, deformation capacity, and durability performance have not been fully explored yet, especially for safe structural design of fatigue‐sensitive bridges and industrial buildings 4 …”