[HTML][HTML] Behavioral nonlinear modeling of prestressed concrete flexural members with internally unbonded steel strands

N Oukaili, I Peera - Results in Engineering, 2022 - Elsevier
In this article, a nonlinear analysis was carried out to develop two different models able to
estimate the performance of partially prestressed concrete flexural members with unbonded …

Flexural response of UHPC beams post-tensioned with internal unbonded tendons: Experimental study

M Dogu, F Menkulasi - Engineering Structures, 2023 - Elsevier
This paper presents the results of an experimental study that deals with the characterization
of the complete flexural response of post-tensioned (PT) ultra-high-performance concrete …

A flexural design methodology for UHPC beams posttensioned with unbonded tendons

M Dogu, F Menkulasi - Engineering Structures, 2020 - Elsevier
This paper provides a framework for predicting the flexural behavior of ultra-high
performance concrete (UHPC) beams posttensioned with unbonded tendons. A mechanics …

[HTML][HTML] Predictive model for stress at ultimate in internally unbonded steel tendons based on genetic expression programming

N Oukaili, I Peera - Results in Engineering, 2022 - Elsevier
Predicting the stress increment (Δ fps) and in turn, the total stress (fps) in internally
unbonded steel tendons at ultimate flexural strength of post-tensioned concrete members is …

[HTML][HTML] Behavior of externally prestressed continuous beams with FRP/steel rebars under symmetrical/unsymmetrical loading: Numerical study

T Lou, Z Li, M Pang - Case Studies in Construction Materials, 2022 - Elsevier
This study examines the use of fiber reinforced polymer (FRP) rebars as an alternative to
steel rebars in externally prestressed concrete (EPC) continuous beams to alleviate the …

An improved methodology for the prediction of the stress at ultimate in unbonded internal and external steel tendons

M Alqam, F Alkhairi, A Naaman - Arabian Journal for Science and …, 2020 - Springer
This study involves the analysis of the stress increase beyond effective prestress in beams
prestressed with unbonded internal or external tendons at their ultimate limit state, Δf ps, and …

Numerical assessment on bonded and unbonded prestressed concrete beams

M Pang, X Liu, Y Dong, T Lou - Buildings, 2022 - mdpi.com
The tendon stress in bonded prestressed concrete (BPC) beams is section-dependent while
it is member-dependent in unbonded prestressed concrete (UPC) beams, leading to marked …

Proposals for Flexural Capacity Prediction of Precast Segmental Concrete Beam Prestressed with Internal Un-Bonded CFRP Tendons

W Yan, F Jiang, L Chen, Y Sun - Applied Sciences, 2023 - mdpi.com
The application of CFRP tendons in precast segmental concrete beams (PSCB) as internal
un-bonded prestressing reinforcement is a newly developed scheme to improve structural …

Artificial Neural Network Model for Predicting the Tendon Stress in Unbonded Posttensioned Concrete Members at the Ultimate Limit State

T Selsøyvold, SMK Samarakoon… - Journal of Structural …, 2022 - ascelibrary.org
Existing design guidelines, codes, and literature provide different calculation models for the
estimation of tendon stresses in unbonded posttensioned concrete members at the ultimate …

Modeling Schemes and Performance Comparisons of Unbonded and Partially Bonded Tendon in Post-Tensioned Concrete Beam

S Chen, F Jiang, Y Sun, W Yan - Buildings, 2024 - mdpi.com
The modeling method of unbonded effects is a challenging and hot topic for the structural
performance analysis of unbonded and partially bonded post-tensioned concrete beams …