Time History Analysis of Simple Supported Steel Concrete Beam Regarding Creep Phenomena, using Volterra Integral Equations
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Bibliografische Angaben
| Autor(en): |
Konstantin Kazakov
(University of Construction Engineering and Architecture VSU “L.Karavelov Sofia, Bulgaria)
Doncho Partov (University of Construction Engineering and Architecture VSU “L.Karavelov Sofia, Bulgaria) Chavdar Stoyanov (University of Construction Engineering and Architecture VSU “L.Karavelov Sofia, Bulgaria) Lazar Georgiev (University of Civil Engineering, Architecture and Geodezy Sofia, Bulgaria) |
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| Medium: | Tagungsbeitrag | ||||
| Sprache(n): | Englisch | ||||
| Tagung: | IABSE Symposium: Long Span Bridges, Istanbul, Turkey, 26-28 April 2023 | ||||
| Veröffentlicht in: | IABSE Symposium Istanbul 2023 | ||||
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| Seite(n): | 583-590 | ||||
| Anzahl der Seiten (im PDF): | 8 | ||||
| Jahr: | 2023 | ||||
| DOI: | 10.2749/istanbul.2023.0583 | ||||
| Abstrakt: |
The paper presents a precise analysis of the stress-strain behavior due to creep in statically determinate composite steel-concrete beam according to numerical method in comparison with EM method of Dischinger, take into account in EC4. The analysis is based on the results obtained by numerical solution with Volterra integral equations, derived for determining the redistribution of stresses in beam section between concrete plate and steel beam with respect to time “t”. The creep law of concrete, according EC2 provisions is used. On the basis of the theory of the visco-elastic body of Arutyunian–Trost-Bažant it is analyzed the migration of stresses from concrete plate to steel beam using two independent Volterra integral equations of the second kind. The duration of the course of study was adopted 100 years. Developed method will allow soon be confronted methods for calculating the composite beams according to EC4 considering rheology of concrete, based on the reduced elastic modulus of concrete. |
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