Publication result detail

LONG-TERM DEFLECTIONS OF CANTILEVER SEGMENTAL BRIDGES

NAVRÁTIL, J.; ZICH, M.

Original Title

LONG-TERM DEFLECTIONS OF CANTILEVER SEGMENTAL BRIDGES

English Title

LONG-TERM DEFLECTIONS OF CANTILEVER SEGMENTAL BRIDGES

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The long-term deflections of cast-in-place segmental bridges constructed using the cantilever method are often larger than the deflections expected in the design. A detailed structural analysis and monitoring of these types of bridges has therefore become a matter of interest. The paper gives a comprehensive analysis of phenomena that can conspire to cause long-span prestressed concrete bridges to deflect more than predicted. The analysis is based on a parametric study and long-term monitoring of the behaviour of a Motorway Bridge across the Vltava River in the Czech Republic. To reveal and quantify possible reasons for excessive bridge deflections, a detailed time-dependent analysis was carried out. The results of the study were compared with in-situ measurements that have been regularly carried out since the very early stage of construction. Theoretical values of the increments of deflections, prestressing forces and concrete strains were compared with the measurements.

English abstract

The long-term deflections of cast-in-place segmental bridges constructed using the cantilever method are often larger than the deflections expected in the design. A detailed structural analysis and monitoring of these types of bridges has therefore become a matter of interest. The paper gives a comprehensive analysis of phenomena that can conspire to cause long-span prestressed concrete bridges to deflect more than predicted. The analysis is based on a parametric study and long-term monitoring of the behaviour of a Motorway Bridge across the Vltava River in the Czech Republic. To reveal and quantify possible reasons for excessive bridge deflections, a detailed time-dependent analysis was carried out. The results of the study were compared with in-situ measurements that have been regularly carried out since the very early stage of construction. Theoretical values of the increments of deflections, prestressing forces and concrete strains were compared with the measurements.

Keywords

prestressed bridges, concrete bridges, long-term deflections, long – term behaviour, time-dependent analysis, creep, shrinkage

Key words in English

prestressed bridges, concrete bridges, long-term deflections, long – term behaviour, time-dependent analysis, creep, shrinkage

Authors

NAVRÁTIL, J.; ZICH, M.

Released

13.09.2013

Publisher

TU Tallinn

Location

Vilnius Litevská republika

ISBN

1822-427X

Periodical

Baltic Journal of Road and Bridge Engineering

Volume

8

Number

3

State

Republic of Latvia

Pages from

190

Pages to

195

Pages count

6

BibTex

@article{BUT75446,
  author="Jaroslav {Navrátil} and Miloš {Zich}",
  title="LONG-TERM DEFLECTIONS OF CANTILEVER SEGMENTAL BRIDGES",
  journal="Baltic Journal of Road and Bridge Engineering",
  year="2013",
  volume="8",
  number="3",
  pages="190--195",
  issn="1822-427X"
}