- Tytuł:
- A study on the deflection and crack layout in a hollow slab bridge
- Autorzy:
-
Wang, Songtao
Wang, Dawei - Powiązania:
- https://bibliotekanauki.pl/articles/27312170.pdf
- Data publikacji:
- 2023
- Wydawca:
- Polska Akademia Nauk. Czasopisma i Monografie PAN
- Tematy:
-
inżynieria mostowa
belka mostowa
belka pusta
poślizg wiązania
rozstaw pęknięć
naprężenie zbrojenia
ugięcie
bridge engineering
hollow beam
slab beam
bond-slip
crack spacing
reinforcement stress
deflection - Opis:
- This paper conducts research based on the hollow slab members in the reconstruction and expansion project of expressways, two types of numerical finite element models with and without considering bond-slip relationship of reinforcement and concrete are established, and verified by tests. The distribution characteristics of crack spacing in reinforced concrete beams are studied. The results show that the bond-slip characteristics of reinforced concrete have little effect on the load-deflection characteristics of 8m hollow slab beam. Due to the influence of the bond-slip relationship of reinforced concrete, the load-deflection curve is partially serrated, while without considering the bond-slip relationship of reinforced concrete, the load-deflection curve is smooth. In the numerical model without considering the bond-slip characteristics, almost all damage occurs in the longitudinal direction, and the distribution characteristics of cracks can’t be accurately determined. Regardless of whether the bond-slip is considered or not, the macroscopic characteristics of the stress distribution is: smaller near the support and larger at the mid-span. As secondary flexural cracks expand, models with and without consideration of bond-slip characteristics can’t calculate crack spacing based on the stress distribution characteristics of the reinforcement.
- Źródło:
-
Archives of Civil Engineering; 2023, 69, 3; 541--555
1230-2945 - Pojawia się w:
- Archives of Civil Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł