Application of the 3D chemo-hygro-thermo mechanical model on existing bridges exposed to chlorides and mechanical damages (CROSBI ID 686557)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kušter Marić, Marija ; Ožbolt, Joško ; Balabanić, Gojko
engleski
Application of the 3D chemo-hygro-thermo mechanical model on existing bridges exposed to chlorides and mechanical damages
Bridge engineering world practice has showed that implicit method of service life prediction, relying on sufficient quality and depth of concrete cover, do not guarantee a 100-year structure lifetime without major, complex and expensive repair works. Bridges exposed to harsh combination of mechanical (static, dynamic, cyclic loading) and environmental (sea salts, de-icing agencies, freeze - thawing cycles, etc.) actions are particularly vulnerable. Two such case studies: Krk Bridge and Maslenica Bridge located in aggressive maritime environment will be analysed in the paper including in-service performance and comparison between measured values on bridges and numerical results obtained by two numerical models for service life prediction: the 3D chemo-hygro-thermo mechanical (3D CHTM) model implemented into the finite element code MASA and the Life-365 model. Both models are capable to realistically predict chloride content in concrete after long-term exposure to seawater. However, the 3D CHTM model, which considers cracks and damage in concrete, anticipates the beginning of steel reinforcement depassivation much more precisely than the other model which doesn’t take concrete damage and cracks into account.
Numerical simulation, Masa, Life365, chloride ingress, bridge
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Podaci o prilogu
012097
2019.
objavljeno
10.1088/1757-899X/615/1/012097
Podaci o matičnoj publikaciji
7th International Conference on Euro Asia Civil Engineering Forum
Lie, Han Ay ; Garrecht, Harald ; Sharma, Akanshu ; Hardjasaputra, Harianto
Stuttgart: IOP Conference Series: Materials Science and Engineering
1757-8981
1757-899X
Podaci o skupu
7th International Conference of Euro Asia Civil Engineering Forum
predavanje
30.09.2019-02.10.2019
Stuttgart, Njemačka