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Theoretical Probabilistic Nonlinear Analysis of Post-Tensioned Bridge Cross-Sections with the Application of Random Fields Cover

Theoretical Probabilistic Nonlinear Analysis of Post-Tensioned Bridge Cross-Sections with the Application of Random Fields

Architecture, Civil Engineering, Environment
Volume 16 (2023): Issue 2 (June 2023)
By:
Open Access
|Jul 2023

Figures & Tables

Figure 1.

Theoretical PT cross sections under consideration
Theoretical PT cross sections under consideration

Figure 2.

The IFC models of a) Incrementally launched PT bridge, b) a typical double PT girder bridge (both models have their real twins)
The IFC models of a) Incrementally launched PT bridge, b) a typical double PT girder bridge (both models have their real twins)

Figure 3.

Approximate sketch of the correlation functions under consideration, (II) – exponential function, (III) – squared exponential, (IV) – squared exponential with a threshold value (JCSS)
Approximate sketch of the correlation functions under consideration, (II) – exponential function, (III) – squared exponential, (IV) – squared exponential with a threshold value (JCSS)

Figure 4.

Exemplary realizations of 1d random fields due to applied cor. functions
Exemplary realizations of 1d random fields due to applied cor. functions

Figure 5.

Exemplary stress results in ILB cross-section
Exemplary stress results in ILB cross-section

Figure 6.

Exemplary cumulative histograms of maximum stresses in T3 cross-section
Exemplary cumulative histograms of maximum stresses in T3 cross-section

Figure 7.

Key results of comparative, probabilistic analyses – in regard to: a) probable ranges of maximum stresses, b) simulation-based reliability index
Key results of comparative, probabilistic analyses – in regard to: a) probable ranges of maximum stresses, b) simulation-based reliability index

Assumed parameters of analyzed members

Cross sectionT1T2T3ILB
Concrete classC35/45C35/45C35/45C35/45
Reinf. steel classB500SPB500SPB500SPB500SP
Diameter of rebars [mm]32323216
Concrete cover [mm]35353535
Characteristic tensile strength of post-tension. tendons [MPa]1860186018601860
Number of tendons and strands in each tendon × number of strands3×225×228×2216×19
Area of single strand [mm2]150150150150

Assumed MEd and NEd (positive sign in bending moment denotes compression in the upper fibres of the given cross-section)

Cross sectionNEd [MN]MEd [MNm]
T19.611.3
T218.919.0
T330.239.7
ILB100.0−102.0
DOI: https://doi.org/10.2478/acee-2023-0022 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142
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Language: English
Page range: 127 - 136
Submitted on: Dec 16, 2022
Accepted on: Mar 8, 2023
Published on: Jul 20, 2023
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
Post-tensioned members,
Random fields,
Nonlinear analysis procedure,
Reliability,
Bending and compression,
Simulated reliability index
Related subjects:
Architecture and design,
Architecture,
Architects, buildings

© 2023 Piotr Owerko, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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