Improvement of Anchorage Performance of Carbon Fiber-Reinforced Polymer Cables

Kim, Tae-Kyun; Jung, Woo-Tai

doi:10.3390/polym14061239

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…Clearly, for an efficient system, an optimal tradeoff between normal forces and friction should be adopted, based on the requested performance. Further on, other variables, such as the sleeve manufacturing, surface treatment or finishing contribute to the actual anchorage efficiency [34,35]. For the sake of completeness, it is worth mentioning other analytical models from the literature, useful to define the stress state in the cable: (1) the model of Robitaille (1999) [36],…”

Section: T = T + Tmentioning

confidence: 99%

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A Split-Wedge Anchorage for CFRP Cables: Numerical Model vs. Experimental Results

Damiani

Nisticò

2022

Polymers

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Fiber-reinforced polymers (FRPs) are widely used within civil structural applications either for structural retrofitting or new constructions. This is due to their appreciable mechanical properties such as high stiffness and strength, resistance to environmental effects, as well low density. Through the years, such peculiarities have encouraged researchers to apply FRP cables within the design of prestressing systems, where steel cables are systematically adopted. However, the brittleness intrinsic to FRP materials necessitates additional efforts to design the anchorage devices. In fact, tendons are here subjected to stress peaks, which need to be controlled in order to prevent the premature failure of the cable. Following this goal, authors recently studied an optimized split-wedge anchorage, for 12 mm-diameter pultruded-carbon-fiber-reinforced polymer (PCFRP) tendons, adopting double-angle (DA) wedges, and compared its performance with a single-angle (SA) wedge configuration. Tensile tests were performed on 3 SA and 2 DA prototypes, respectively, through a universal testing machine: the DA configuration exploited the average cable capacity (257 kN) once, denoting a maximum efficiency. The obtained experimental results are utilized, in the framework of the present work, to calibrate contact parameters of nonlinear finite element models. The presented numerical results helped to assess benefits of the proposed configurations and the behavior of the anchorage components: the DA configuration turned out to satisfactorily avoid stress peak superpositions on the cable, with a reduction in pressure in the loading end of the cable with respect to the SA model.

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Section: T = T + Tmentioning

confidence: 99%

Section: The Freyssinet Anchoragesmentioning

confidence: 99%

A Split-Wedge Anchorage for CFRP Cables: Numerical Model vs. Experimental Results

Damiani

Nisticò

2022

Polymers

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“…With a quarter of the weight per unit length of the traditional steel cable, the BFRP cable is more sensitive to external excitation [10]. Under the same load excitation, the amplitude of vibration acceleration will be significantly larger than that of the steel cable [11], which shows the high sensitivity of the FRP cable under external excitation.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Coupled Vibration Behavior of BFRP Cables on Long-Span Cable-Stayed Bridges under Parametric Excitation

Yang,

Zhou,

Guan

et al. 2023

Buildings

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Based on the cable-stayed beam model, this paper studies the nonlinear coupled vibration behavior of basalt fiber-reinforced polymer (BFRP) cables on long-span cable-stayed bridges under parametric excitation. Considering the sag, damping of BFRP cables, and the coupled interactions between stayed cables and the main girder, the nonlinear coupling vibration model of the BFRP cable–beam composite structure has been established. Taking the longest cable of Sutong Bridge as a case study, the nonlinear coupled vibration behavior of BFRP cables under parametric excitation has been numerically analyzed using the finite difference method. The analysis results indicate that (1) under parametric excitation, the large amplitude nonlinear vibration of the BFRP cable will be induced with an evident “beat” phenomenon. (2) Under the same parametric excitation, the nonlinear coupling vibration response and the beta frequency of the BFRP cable were both smaller than that of the traditional steel cable. (3) The nonlinear coupling vibration response of the BFRP cable increased with an increment in excitation amplitude and a decrement in cable force. With the increase in the excitation frequency, weight per unit length, and axial stiffness, the nonlinear vibration response of the BFRP cable increased first and then decreased. Meanwhile, the damping ratio of the BFRP cable had no significant influence on the nonlinear coupling vibration.

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Evaluation of transfer length of CFRP tendon in pretensioned concrete beam using embedded FBG sensors

Hwang

Kim

et al. 2023

Structures

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Improvement of Anchorage Performance of Carbon Fiber-Reinforced Polymer Cables

Cited by 7 publications

References 27 publications

A Split-Wedge Anchorage for CFRP Cables: Numerical Model vs. Experimental Results

A Split-Wedge Anchorage for CFRP Cables: Numerical Model vs. Experimental Results

Nonlinear Coupled Vibration Behavior of BFRP Cables on Long-Span Cable-Stayed Bridges under Parametric Excitation

Evaluation of transfer length of CFRP tendon in pretensioned concrete beam using embedded FBG sensors

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