Abstract
This paper presents an experimental study on the behaviour of precast beam-column sub-assemblages under middle column removal scenarios. By using Engineered Cementitious Composites (ECC) in the beam-column joint and the cast-in-situ structural topping, the resistance and deformation capacity of the sub-assemblage was investigated. Besides, the compatible deformation between ECC and longitudinal steel reinforcement was observed at the initial stage, until the tensile strain capacity of ECC was exhausted. With increasing vertical displacement, a major crack was formed in the plastic hinge region, and severe localisation of rotation was recorded at large deformations. Top reinforcement in the beam eventually ruptured near the face of the end column stub, leading to collapse of the sub-assemblage. Conclusion was drawn from the experimental results chat application of ECC to the precast bearn-column sub-assemblage limits its deformation capacity as a result of higher bond strength between ECC and reinforcing bars.
| Original language | English |
|---|---|
| Pages (from-to) | 193-194 |
| Number of pages | 2 |
| Journal | fib Symposium |
| Publication status | Published - 2015 |
| Externally published | Yes |
| Event | International fib Symposium on Concrete - Innovation and Design, 2015 - Copenhagen, Denmark Duration: May 18 2015 → May 20 2015 |
Bibliographical note
Publisher Copyright:© fédération internationale du béton (fib).
ASJC Scopus Subject Areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science (miscellaneous)
Keywords
- Beam-Column Sub-Assemblage
- Catenary Action
- Compressive Arch Action
- Engineered Cementitious Composites
- Progressive Collapse