Experimental investigation on nonlinear flexural behavior of post-tensioned concrete bridge girders with different grouting conditions and prestress levels

D Losanno, S Galano, F Parisi, MR Pecce… - Journal of Bridge …, 2024 - ascelibrary.org
In past decades, the occurrence of catastrophic collapses in post-tensioned concrete (PC)
bridges in several countries has raised major concerns about their load-bearing capacity …

Numerical simulation of post‐tensioned concrete girders with defective grouting including local stress–strain tendons response

S Galano, D Losanno, F Parisi - Structural Concrete, 2024 - Wiley Online Library
In internally post‐tensioned (PT) prestressed concrete (PC) structures, the prestressing
system is usually made of high‐strength steel tendons embedded within concrete through …

[HTML][HTML] An index-based multi-hazard risk assessment method for prioritisation of existing bridge portfolios

LA Grieco, N Scattarreggia, R Monteiro… - International Journal of …, 2024 - Elsevier
In recent years, several catastrophic collapses of existing bridges have highlighted the need
for rapid risk analysis methods aimed at supporting infrastructure managers in the …

Finite difference equation of Volterra integral equation for estimating the time-dependent prestress loss of a prestressed concrete beam

HW Park, NI Mukharromah, JH Hwang, SC Lee - Structures, 2024 - Elsevier
A new finite difference equation is proposed to estimate the time-dependent prestress loss of
a prestressed concrete (PSC) beam. The finite difference equation is derived by discretizing …

Flexural Stiffness and Crack Width of Partially Prestressed Beams with Unbonded Tendons

BT Terán-Torres, AA Elías-Chávez, PL Valdez-Tamez… - Buildings, 2023 - mdpi.com
The original concept of “Total Prestress” consists of creating compressions in concrete
without generating tension stresses for service load, while in" Partially Prestressed” …

[HTML][HTML] Experimental and numerical investigation of punching and post-punching shear capacities of post-tensioned flat plate slab-column joints influenced by …

Z Jiao, Y Li, H Guan, M Diao, H Sun, Z Zhao… - Engineering …, 2024 - Elsevier
Post-tensioned slab systems serve as an effective method to enhance the progressive
collapse resistance of concrete flat plate structures by significantly improving the punching …

[HTML][HTML] Safety assessment of an existing bridge deck subject to different damage scenarios through the global safety format ECOV

G Bertagnoli, M Ferrara, E Miceli, P Castaldo… - Engineering …, 2024 - Elsevier
The assessment of existing reinforced concrete structures, especially bridges and viaducts,
nowadays is one of the most relevant aspects for engineers. In fact, due to the old age of a …

Saw‐cut method verification for determining the most important factors influencing its applicability

J Kralovanec, M Moravcik, M Zahuranec… - Structural …, 2024 - Wiley Online Library
The current situation with prestressed structures raises questions about the ways how to
determine residual prestressing which is the crucial factor for the evaluation of the …

Numerical simulation of prestressed concrete girders through different modelling approaches

S Galano, G Miluccio, D Losanno, F Parisi… - Italian Concrete …, 2022 - Springer
The structural safety assessment of existing infrastructures is a central issue in civil
engineering, especially after recent disasters that have hit different Italian bridges. Several …

Probabilistic assessment of the moment-curvature response of PC beams with different corrosion scenarios

B Belletti, S Ravasini, S Sandrini… - Bridge Maintenance …, 2024 - taylorfrancis.com
Corrosion of the reinforcement significantly affects the resistance and ductility of concrete
members. While various approaches have been proposed to study the sectional response of …