Anchorage and residual bond characteristics of 7-wire strand

Orr, John; Darby, Antony; Ibell, Tim; Thoday, Nick; Valerio, Pierfrancesco

doi:10.1016/j.engstruct.2017.01.061

Cited by 11 publications

(8 citation statements)

References 14 publications

(9 reference statements)

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“…The finite element model based on the Model Code 2010 relationship overestimates the values of the strains, whereas the models using the relationships of Orr et al [19] for unstressed strands and Khalaf and Huang [20] underestimate them. In the case of the model based on the Model Code 2010 relationship, the difference has been expected, since this relationship is developed for ribbed reinforcing bars, but not for prestressing tendons.…”

Section: Resultsmentioning

confidence: 94%

“…Coefficients of determination between the strains according to ARAMIS and the predicted strains are presented in Tables 3 and 4. On the basis of the strain distributions (Figures 5, 7) and the coefficients of correlation (Tables 3, 4), it is established that the finite element models using the bond stress-slip relationships of Model Code 2010 [2] for ribbed bars, Orr et al [19] for unstressed strands, and Khalaf and Huang [20] give results that are significantly different than those obtained with the help of ARAMIS.…”

Section: Resultsmentioning

confidence: 96%

“…In the case of the model based on the Model Code 2010 relationship, the difference has been expected, since this relationship is developed for ribbed reinforcing bars, but not for prestressing tendons. The inappropriateness of the model using the relationship of Orr et al [19] for unstressed strands indicates that the prestressing of strands in bond tests is crucial for deducing a realistic bond stress-slip relationship. Concerning the model based on the relationship of Khalaf and Huang [20], it Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…Orr et al [19] carried out pull-out tests for both unstressed and stressed 15.2 mm strands. The specified concrete strength at the transfer was f ′ ci = 54.2 MPa.…”

Section: Literature Review Of Bond Models For Strandsmentioning

confidence: 99%

“…The models differ only in a bond stress-slip relationship for prestressing tendons. The relationships for strands deduced by [16,17,19,20] are applied. Additionally, the Model Code 2010 relationship (3)(4)(5)(6) for ribbed bars in the case of a pull-out failure is used to evaluate its appropriateness for 7-wire strands.…”

Section: Finite Element Modellingmentioning

confidence: 99%

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Determination of bond model for 7-wire strands in pretensioned concrete beam

et al. 2021

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A correct choice of a bond model for prestressing tendons is crucial for the right modelling of a structural behaviour of a pretensioned concrete structure. The aim of this paper is the determination of an optimal bond model for 7-wire strands in a prestressed concrete beam produced in a precast concrete plant of Consolis Poland. ATENA 3D is used to develop finite element models of the beam that differ only in a bond stress-slip relationship of tendons. The bond stress-slip relationships for modelling are taken from the results of bond tests carried out by different researchers in previous years. Moreover, for comparison purposes, a simplified 2D model of the beam is created in Autodesk Robot. The strain distribution at the time of the strand release is found for each of the finite element models. The determined strain distributions are compared with the strain distribution in the beam established by an experimental test using a measuring system based on a digital image correlation. On the basis of the comparison results, the most appropriate bond models for 7-wire strands used in the beam are identified.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

“…Orr et al [19] carried out pull-out tests for both unstressed and stressed 15.2 mm strands. The specified concrete strength at the transfer was f ′ ci = 54.2 MPa.…”

Section: Literature Review Of Bond Models For Strandsmentioning

confidence: 99%