Publication result detail

Effect of external prestressing on the stability of a flat arch

VELEŠÍK, M.; STRÁSKÝ, J.; NEČAS, R.; KOLÁČEK, J.; POŽÁR, M.

Original Title

Effect of external prestressing on the stability of a flat arch

English Title

Effect of external prestressing on the stability of a flat arch

Type

Paper in proceedings (conference paper)

Original Abstract

For bridges with a slender bridge deck, ensuring sufficient stability under external loads is one of the technical problems that must be addressed. This paper studies the stability of a flat arch under asymmetric loads. Flat arch structures can form a directly walkable bridge deck. These structures can be realized without external prestressing only up to certain spans due to the necessity of capturing significant horizontal forces. The paper includes a static study that analyses the possible arrangements of the prestressing cables. The study evaluates the stabilizing effect of external prestressing and the possibility of creating a self-anchored system. Based on the results of the static study, a suitable variant was chosen for the design of a physical experiment. The experimental measurements compare the increase of stability for an arch discretely connected to a prestressing cable and an arch structure with a tie without mutual connection.

English abstract

For bridges with a slender bridge deck, ensuring sufficient stability under external loads is one of the technical problems that must be addressed. This paper studies the stability of a flat arch under asymmetric loads. Flat arch structures can form a directly walkable bridge deck. These structures can be realized without external prestressing only up to certain spans due to the necessity of capturing significant horizontal forces. The paper includes a static study that analyses the possible arrangements of the prestressing cables. The study evaluates the stabilizing effect of external prestressing and the possibility of creating a self-anchored system. Based on the results of the static study, a suitable variant was chosen for the design of a physical experiment. The experimental measurements compare the increase of stability for an arch discretely connected to a prestressing cable and an arch structure with a tie without mutual connection.

Keywords

Flat arch, External prestressing, Stability, Static physical model

Key words in English

Flat arch, External prestressing, Stability, Static physical model

Authors

VELEŠÍK, M.; STRÁSKÝ, J.; NEČAS, R.; KOLÁČEK, J.; POŽÁR, M.

RIV year

2025

Released

01.04.2024

Publisher

Trans Tech Publications Ltd

Location

Switzerland

Book

29th Concrete Days Innovative Approaches in Bridge Engineering

ISBN

1662-0356

Periodical

Advances in Science and Technology

Volume

147

State

Swiss Confederation

Pages from

11

Pages to

19

Pages count

9

URL

https://doi.org/10.4028/p-s8IkEO

BibTex

@inproceedings{BUT185254,
  author="Marek {Velešík} and Jiří {Stráský} and Radim {Nečas} and Jan {Koláček} and Michal {Požár}",
  title="Effect of external prestressing on the stability of a flat arch",
  booktitle="29th Concrete Days Innovative Approaches in Bridge Engineering",
  year="2024",
  journal="Advances in Science and Technology",
  volume="147",
  pages="11--19",
  publisher="Trans Tech Publications Ltd",
  address="Switzerland",
  doi="10.4028/p-s8IkEO",
  issn="1662-0356",
  url="https://doi.org/10.4028/p-s8IkEO"
}