Prediction of the elastoplastic in-plane buckling of parabolic steel arch bridges

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00522844" target="_blank" >RIV/68378297:_____/20:00522844 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jcsr.2020.105988" target="_blank" >https://doi.org/10.1016/j.jcsr.2020.105988</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcsr.2020.105988" target="_blank" >10.1016/j.jcsr.2020.105988</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Prediction of the elastoplastic in-plane buckling of parabolic steel arch bridges

Popis výsledku v původním jazyce

In this paper, amodified eigen-buckling algorithmbased on eigenvalue analysis was presented for evaluating the in-plane buckling strength of parabolic steel arch bridges. The buckling strength of parabolic arches under uniformly distributed vertical loads was studied. The slenderness parameter was modified to unify the buckling curves. Parametric analysis was carried out to study the applicability of the new algorithm. Finally, a case study regarding the bearing capacity of a steel arch bridge was performed to verify the proposed method. The results showed that the influences of geometric imperfections, rise-to-span ratio, and material yield strength of parabolic arches were taken into account by modifying the slenderness parameter. The buckling strength results of the arches using the modified dimensionless slenderness agreed very well with the straight column buckling curves in the specifications. The modified eigen-buckling algorithm provided very high accuracy in buckling strength assessment for parabolic steel arch bridges when the span was less than 200 m. The modified eigenbuckling algorithm predicted the load-bearing capacities of the arch bridge very well. Hence, the proposed method can be used for preliminary buckling strength evaluations in the bridge design stage.

Název v anglickém jazyce

Prediction of the elastoplastic in-plane buckling of parabolic steel arch bridges

Popis výsledku anglicky

In this paper, amodified eigen-buckling algorithmbased on eigenvalue analysis was presented for evaluating the in-plane buckling strength of parabolic steel arch bridges. The buckling strength of parabolic arches under uniformly distributed vertical loads was studied. The slenderness parameter was modified to unify the buckling curves. Parametric analysis was carried out to study the applicability of the new algorithm. Finally, a case study regarding the bearing capacity of a steel arch bridge was performed to verify the proposed method. The results showed that the influences of geometric imperfections, rise-to-span ratio, and material yield strength of parabolic arches were taken into account by modifying the slenderness parameter. The buckling strength results of the arches using the modified dimensionless slenderness agreed very well with the straight column buckling curves in the specifications. The modified eigen-buckling algorithm provided very high accuracy in buckling strength assessment for parabolic steel arch bridges when the span was less than 200 m. The modified eigenbuckling algorithm predicted the load-bearing capacities of the arch bridge very well. Hence, the proposed method can be used for preliminary buckling strength evaluations in the bridge design stage.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GC17-26353J" target="_blank" >GC17-26353J: Teoretické prediktivní modely interakce proměnného a pohyblivého zatížení využitelné v monitoringu mostních konstrukcí</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Constructional Steel Research

ISSN

0143-974X

e-ISSN

—

Svazek periodika

168

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

105988

Kód UT WoS článku

000582365300038

EID výsledku v databázi Scopus

2-s2.0-85080061199