Assessment and strengthening of post-tensioned concrete box-girder bridges

Author: Riccardo Stroscio, Akram Malik and Frédéric Turlier

Date published

6 September 2023

Price

Standard: £9.95 + VAT
Members/Subscribers: Free

The Institution of Structural Engineers The Institution of Structural Engineers
Back to Previous

Assessment and strengthening of post-tensioned concrete box-girder bridges

Tag
Author
Riccardo Stroscio, Akram Malik and Frédéric Turlier
Date published
6 September 2023
Price

Standard: £9.95 + VAT
Members/Subscribers: Free

The Structural Engineer
Author

Riccardo Stroscio, Akram Malik and Frédéric Turlier

Citation

The Structural Engineer, Volume 101, Issue 9, 2023, Page(s) 8-13

Date published

6 September 2023

Author

Riccardo Stroscio, Akram Malik and Frédéric Turlier

Citation

The Structural Engineer, Volume 101, Issue 9, 2023, Page(s) 8-13

Price

Standard: £9.95 + VAT
Members/Subscribers: Free

This article covers technical and asset management aspects related to the assessment and subsequent strengthening design for post-tensioned concrete box-girder bridges.

Synopsis

Post-tensioned concrete box girders have been widely adopted for the construction of medium- to long-span bridges since the mid-20th century. Since the construction of the first such bridges, there has been rapid growth in the volume and weight of heavy vehicles, as well as an increase in exposure to adverse environmental conditions. At the same time, it is estimated that more than 50% of existing bridges in higher-income countries are over half-way through their design life and thus bridge owners are challenged with the management of aging structures.

When deterioration in prestressed concrete bridges is identified during inspections, it leads to specific assessments and is usually followed by the need for bespoke strengthening design solutions. In many cases, the challenge in implementing the strengthening resides in maintaining structural capacity to minimise traffic disruption before the works are complete.

This article covers the technical and asset management aspects related to the assessment and subsequent strengthening design for post-tensioned concrete box-girder bridges through the lens of case studies on two successful post-tensioned bridge rehabilitations. The strengthening solutions presented have been implemented with minimal disruption to traffic and have had a positive environmental impact by avoiding demolition and full deck reconstruction.

Additional information

Format:
PDF
Pages:
8-13
Publisher:
The Institution of Structural Engineers

Tags

Concrete Concrete - prestressed Bridge Repair & Maintenance Feature Issue 9

Related Resources & Events

The Structural Engineer
Image of a drone inspecting a bridge

Viewpoint: Data and decisions for bridge maintenance

Mungo Stacy discusses the condition of the UK's bridges and the challenges faced by structural engineers in assessing and maintaining bridges in the years ahead.

Date – 6 September 2023
Author – Mungo Stacy
Price – £9.95
Training
<h4>The explicit equations of prestress</h4>

The explicit equations of prestress

Angus Low discusses the explicit equations of prestress for continuous bridge decks.

Date – 26 June 2018
Price – Free
The Structural Engineer
View of Avonmouth Bridge from two angles

Assessment of steel bridges – cracking the code

This article gives a view of the way in which assessment codes can fall short in carrying out a structural assessment of steel bridges.

Date – 6 September 2023
Author – Graham Slade
Price – £9.95