Detail publikačního výsledku

Transverse prestressing and reinforced concrete as the key to restoration of masonry arch bridges

KLUSÁČEK, L.; NEČAS, R.; POŽÁR, M.; PĚKNÍK, R.; SVOBODA, A.

Originální název

Transverse prestressing and reinforced concrete as the key to restoration of masonry arch bridges

Anglický název

Transverse prestressing and reinforced concrete as the key to restoration of masonry arch bridges

Druh

Článek WoS

Originální abstrakt

There is still a large number of masonry arch bridges on the road and railway network. More than 80 % of arch bridges are over 100 years old so their service life has been exceeded significantly. The general focus of the paper is to show the method for strengthening and restoration of these bridges, especially if they have been damaged by longitudinal cracks. The restoration is performed using new spandrel walls from reinforced concrete stabilized by transverse prestressed cables. This paper illustrates the strengthening process with four examples of restored road or railway bridges. In addition, it includes examples of basic cable arrangements and a design of the new concrete walls, which are used as anchorage areas for transverse prestressing. The efficiency of this method will be determined using data measured during the prestressing and a load test. The measurements have shown an extremely favourable effect of the addition of horizontal prestressing within the new reinforced concrete walls. After an evaluation of the deformation of the top cross-section reduced up to 40 % of the values before strengthening.

Anglický abstrakt

There is still a large number of masonry arch bridges on the road and railway network. More than 80 % of arch bridges are over 100 years old so their service life has been exceeded significantly. The general focus of the paper is to show the method for strengthening and restoration of these bridges, especially if they have been damaged by longitudinal cracks. The restoration is performed using new spandrel walls from reinforced concrete stabilized by transverse prestressed cables. This paper illustrates the strengthening process with four examples of restored road or railway bridges. In addition, it includes examples of basic cable arrangements and a design of the new concrete walls, which are used as anchorage areas for transverse prestressing. The efficiency of this method will be determined using data measured during the prestressing and a load test. The measurements have shown an extremely favourable effect of the addition of horizontal prestressing within the new reinforced concrete walls. After an evaluation of the deformation of the top cross-section reduced up to 40 % of the values before strengthening.

Klíčová slova

arch bridge; transverse prestressing; spandrel wall; restoration; post-tensioning; masonry

Klíčová slova v angličtině

arch bridge; transverse prestressing; spandrel wall; restoration; post-tensioning; masonry

Autoři

KLUSÁČEK, L.; NEČAS, R.; POŽÁR, M.; PĚKNÍK, R.; SVOBODA, A.

Rok RIV

2022

Vydáno

07.08.2021

Nakladatel

Elsevier

Místo

Oxford

ISSN

0141-0296

Periodikum

ENGINEERING STRUCTURES

Svazek

245

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

20

Strany počet

20

URL

https://www.sciencedirect.com/science/article/pii/S0141029621010464

Plný text v Digitální knihovně

http://hdl.handle.net/11012/200919

BibTex

@article{BUT172172,
  author="Ladislav {Klusáček} and Radim {Nečas} and Michal {Požár} and Robin {Pěkník} and Adam {Svoboda}",
  title="Transverse prestressing and reinforced concrete as the key to restoration of masonry arch bridges",
  journal="ENGINEERING STRUCTURES",
  year="2021",
  volume="245",
  number="1",
  pages="1--20",
  doi="10.1016/j.engstruct.2021.112898",
  issn="0141-0296",
  url="https://www.sciencedirect.com/science/article/pii/S0141029621010464"
}

Dokumenty

1-s2.0-S0141029621010464-main