Publication result detail

Box girder bridge deflections

KŘÍSTEK, V.; ZICH, M.; BAŽANT, Z.; KOHOUTKOVÁ, A.

Original Title

Box girder bridge deflections

English Title

Box girder bridge deflections

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Long-span prestressed concrete box girders typically exhibit deceptively small deflections, possibly even upwards. However, after about 3 to 10 years, deflections may begin to increase rapidly. To predict deflections correctly, a creep and shrinkage model that realistically describes the moisture diffusion process must be used to calculate the delay of shrinkage and drying creep of the thick bottom slab. The effects of this delay are discussed, and comparisons are made to measured deflections of actual structures.

English abstract

Long-span prestressed concrete box girders typically exhibit deceptively small deflections, possibly even upwards. However, after about 3 to 10 years, deflections may begin to increase rapidly. To predict deflections correctly, a creep and shrinkage model that realistically describes the moisture diffusion process must be used to calculate the delay of shrinkage and drying creep of the thick bottom slab. The effects of this delay are discussed, and comparisons are made to measured deflections of actual structures.

Keywords

box girder bridges; creep; drying; humidity effects; long-term deflections; prestressed concrete; serviceability; shrinkage.

Key words in English

box girder bridges; creep; drying; humidity effects; long-term deflections; prestressed concrete; serviceability; shrinkage.

Authors

KŘÍSTEK, V.; ZICH, M.; BAŽANT, Z.; KOHOUTKOVÁ, A.

Released

28.01.2006

Publisher

ACI Concrete Intenatiaonal

Location

US

ISBN

0162-4075

Periodical

Concrete International Jour

Volume

28

Number

01

State

United States of America

Pages from

55

Pages to

63

Pages count

9

BibTex

@article{BUT46718,
  author="Vladimír {Křístek} and Miloš {Zich} and Zdeněk P. {Bažant} and Alena {Kohoutková}",
  title="Box girder bridge deflections",
  journal="Concrete International Jour",
  year="2006",
  volume="28",
  number="01",
  pages="55--63",
  issn="0162-4075"
}