Bridge vulnerabilities and collapses: the Italian experience

PG Malerba - Structure and Infrastructure Engineering, 2024 - Taylor & Francis
Many recent collapses concerned old bridges, but also modern ones, often having the same
age, the same types of materials, and the same technologies. Therefore, it is crucial to …

Reference-free corrosion damage diagnosis in steel strands using guided ultrasonic waves

A Farhidzadeh, S Salamone - Ultrasonics, 2015 - Elsevier
This study presents a nondestructive evaluation method based on guided ultrasonic waves
(GUW) to quantify corrosion damage of prestressing steel strands. Specifically, a reference …

Monitoring of prestress and bond stress of self-sensing FBG steel strand

W Zhu, Q Shen, H Qin - Measurement, 2021 - Elsevier
In order to investigate the stress distribution in a prestressed steel strand and the
development of bond stress between the steel strand and concrete, a new technology of …

An Impact‐Echo Experimental Approach for Detecting Concrete Structural Faults

Y Yang, W Chai, D Liu, W Zhang, J Lu… - Advances in Civil …, 2021 - Wiley Online Library
For the current problem of detection of grouting defects in posttensioned prestressed
concrete members, the paper takes a single‐layer arrangement of prestressed pipes as the …

Finite-Element Performance Degradation Behavior of a Suspension Prestressed Concrete Arch Bridge with Grouting Defects

S Gong, F Sun, K Chen, X Feng - Buildings, 2024 - mdpi.com
In response to the difficulty in effectively dealing with grouting defects in corrugated pipes
within a suspension prestressed concrete arch bridge, a method for assessing the …

Finite element-based parametric and probabilistic analysis of structural deterioration in corroded Pre-stressed concrete girders

L Huang - 2020 - era.library.ualberta.ca
Deterioration of concrete structures caused by corrosion have caused worldwide concerns
especially for pre-stressed concrete (PC) structures because of their extensive use in …

Application of the Phase Spectrum of Impact Echo in the Detection of Grouting Defects in the Tendon Ducts

W Chai, Y Yang - Journal of Testing and Evaluation, 2024 - asmedigitalcollection.asme.org
The impact-echo method is widely used to detect grouting defects within prestressed
concrete tendon ducts. However, when the distance from the rebar to the test surface was …

About recent bridge failures

PG Malerba - Bridge Safety, Maintenance, Management, Life …, 2022 - taylorfrancis.com
Many recent collapses concerned old bridges, but also modern ones often having the same
age, the same types of materials, and the same technologies. Therefore, it is important to …

Corrosion induced failures of post-tensioned bridges

A Menga, T Kanstad, D Cantero - 2022 - vegvesen.brage.unit.no
The present report includes the results obtained from a literature survey about corrosion-
induced failures of post-tensioned bridges and a few other cases of prestressed structures …

Modeling the re-anchoring of a ruptured tendon in bonded post-tensioned concrete

AO Abdelatif, JS Owen, MFM Hussein - 2012 - nottingham-repository.worktribe.com
: In this study, a theoretical model is deve loped to simulate the re-anchorage of a ruptured
bonded post-tensioning tendon. This includes estimating the re-anchorage length and stress …