Numerical evaluation of the long-term behavior of precast continuous bridge decks

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Carlos Sousa (Author) FEUP; Helder Sousa (Author) Other; Afonso Serra Neves (Author) FEUP; Joaquim Figueiras (Author) FEUP

Journal

Title: Journal of Bridge Engineering

Vol. 17 No. 1

Pages: 89-96

ISSN: 1084-0702

Publisher: ASCE

Indexing

ISI Web of Knowledge - 18 Citations

Scopus - 26 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Concrete engineering

Other information

Authenticus ID: P-002-H0P

DOI: 10.1061/(asce)be.1943-5592.0000233

Abstract (EN): Continuous bridge decks constructed with precast girders undergo significant stress changes caused by the concrete delayed deformations because of creep and shrinkage. These effects must be taken into account in the design of new structures. The validation of the analysis procedures should ideally be carried out through the comparison between the calculations and the results observed in real structures. However, experimental results of the construction and long-term behavior of these structures are scarce. The construction of a major bridge in Portugal has provided the opportunity to monitor one such structure. This paper presents the monitoring campaign and the analysis strategy that was developed to assess the long-term variation of strains and stresses in precast continuous bridges. The numerical analysis was validated by comparison with the results observed in the real bridge. The consequences of carrying out simplified analyses based on limited information about the concrete properties and the construction sequence are also evaluated.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8