Experimental behavior of the shear strength of full-scale precast prestressed double tees

Wei, Zhou; Li, Hao; Zhang, Wenlong

doi:10.1016/j.jobe.2021.102455

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…where M rd is the resisting bending moment, and M ed is the bending moment induced by the external loads. However, the prestress force enhances the performance of the beam in operational conditions by reducing its deformability [1] and preventing the cross-section cracking [2][3][4]. A loss in the prestress force makes the concrete attain tensile stresses with lower load levels.…”

Section: Introduction: the Role Of Prestressing In Structural Reliabilitymentioning

confidence: 99%

Aspects of Vibration-Based Methods for the Prestressing Estimate in Concrete Beams with Internal Bonded or Unbonded Tendons

Aloisio

2021

Infrastructures

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The estimate of internal prestressing in concrete beams is essential for the assessment of their structural reliability. Many scholars have tackled multiple and diverse methods to estimate the measurable effects of prestressing. Among them, many experimented with dynamics-based techniques; however, these clash with the theoretical independence of the natural frequencies of the forces of internally prestressed beams. This paper examines the feasibility of a hybrid approach based on dynamic identification and the knowledge of the elastic modulus. Specifically, the author considered the effect of the axial deformation on the beam length and the weight per unit of volume. It is questioned whether the uncertainties related to the estimate of the elastic modulus and the first natural frequency yield reasonable estimates of the internal prestressing. The experimental testing of a set of full-scale concrete girders with known design prestressing supports a discussion about its practicability. The author found that the uncertainty in estimating the natural frequencies and elastic modulus significantly undermines a reliable estimate of the prestressing state.

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Section: Introduction: the Role Of Prestressing In Structural Reliabilitymentioning

confidence: 99%

Aspects of Vibration-Based Methods for the Prestressing Estimate in Concrete Beams with Internal Bonded or Unbonded Tendons

Aloisio

2021

Infrastructures

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Analysis of full-scale precast post-tension (FPP) girder for straddle monorail – Experimental and FEA study

Suparp

Joyklad

Sirisonthi³

et al. 2022

Structures

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Experimental behavior of the shear strength of full-scale precast prestressed double tees

Cited by 2 publications

References 14 publications

Aspects of Vibration-Based Methods for the Prestressing Estimate in Concrete Beams with Internal Bonded or Unbonded Tendons

Aspects of Vibration-Based Methods for the Prestressing Estimate in Concrete Beams with Internal Bonded or Unbonded Tendons

Analysis of full-scale precast post-tension (FPP) girder for straddle monorail – Experimental and FEA study

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