What question did this study set out to answer?

Investigate the mechanisms driving excessive long-term deflections in ageing prestressed segmental cantilever bridges and develop targeted structural retrofit strategies.

August 14, 2026Structure and Infrastructure Engineering

Time-dependent deflection assessment and retrofit strategies for ageing prestressed cantilever segmental bridges

View Full Paper

Ask AI

Bookmark

Authors

MGMichele Fabio GranataUniversity of Palermo LMLidia La MendolaUniversity of Palermo

Discussion

Member takes

Implication

Structural modeling study demonstrates effective retrofitting protocols for excessive creep deflection in ageing prestressed bridges, highlighting external prestressing and structural modifications.

Key Points

Investigate the mechanisms driving excessive long-term deflections in ageing prestressed segmental cantilever bridges and develop targeted structural retrofit strategies.
Conducted staged-construction numerical analyses incorporating various concrete creep models to simulate time-dependent deformations and prestressing losses.
Evaluated retrofit solutions—including external prestressing, partial drop-in span unloading, and static scheme alterations toward arch-frame behavior—on a historic Italian bridge and supplementary case studies.
Identified concrete creep and prestressing losses as primary factors pushing deflections beyond Serviceability Limit State thresholds and impairing Ultimate Limit State capacity.
Demonstrated that combining external prestressing with static scheme modifications successfully improves stress distributions and mitigates long-term structural degradation.

Cite This Study

Granata et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec6eab70b84ec8b912f0b https://doi.org/10.1080/15732479.2026.2715470

View Full Paper

Ask AI

Bookmark

Implication

Structural modeling study demonstrates effective retrofitting protocols for excessive creep deflection in ageing prestressed bridges, highlighting external prestressing and structural modifications.

Time-dependent deflection assessment and retrofit strategies for ageing prestressed cantilever segmental bridges

Discussion

Member takes

Implication

Key Points

Cite This Study

Time-dependent deflection assessment and retrofit strategies for ageing prestressed cantilever segmental bridges

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider