The long-term service safety of CFRP cables is a key factor limiting the widespread application of CFRP cable roof structures. This study focuses on the fatigue performance of an integrated wedge anchorage system for CFRP cables. Based on simulation methods, the wind-induced vibration response of CFRP cables and the fatigue performance of the integrated wedge anchorage system were studied. Simulation results showed that, under fluctuating wind loads, the average stress of CFRP cables ranges from 696.13 MPa to 1473.65 MPa, the maximum stress amplitude is 71.11 MPa, and the minimum stress ratio is 0.91. Furthermore, a combined ABAQUS and FE-SAFE simulation method was employed to clarify the effects of fatigue loading and anchorage design parameters on the fatigue performance of the integrated wedge anchorage system. Fatigue life prediction formulas at maximum stress levels ranging from 600 MPa to 1800 MPa were proposed to evaluate the fatigue performance of the anchorage system. Finally, using simultaneous satisfaction of static and fatigue performance requirements as the optimization criterion, some design values were suggested to improve the fatigue performance of the integrated wedge anchorage system for CFRP rods.
Liang et al. (Fri,) studied this question.
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