| Title |
Flexural Behavior Characteristics of Two-story Reinforced Concrete Structural Walls Retrofitted with Vertical Reinforcing Bar After Wall End Crushing |
| Authors |
손동희(Son, Dong-Hee) ; 유무영(Yoo, Mooyoung) ; 배백일(Bae, Baek-Il) ; 최창식(Choi, Chang-Sik) |
| DOI |
https://doi.org/10.5659/JAIK.2022.38.10.283 |
| Keywords |
Vertical extension; shear wall; flexural retrofit; slab |
| Abstract |
The purpose of this study is to evaluate the flexural behavior of flexural retrofitted shear walls connected to slabs retrofitted with vertical
rebar after wall end crushing. The main variable was the application of the flexural retrofit method. The evaluation of the effect of the shear
studs when the retrofit method was applied was intentionally constructed with 60% of the actual required number. As a result of this
experiment, it was possible to confirm the strength increase of about 56% with the flexural retrofit. As suggested in the previous study, the
retrofitted wall and the existing wall exhibited partial composite behavior, which resulted in the deformation of the slab and the phenomenon
of the concrete covering falling off. Double curvature appeared as a strain on the upper part of the wall when it was reversed. The part
where the moment was reversed appeared to be the upper part of the wall and not the center. It was confirmed that the damage to the slab
was greater when the joint section of the existing wall and the new wall were subjected to tension. Additionally, it was judged that this
should be considered when designing the retrofit of the slab and the shear wall. |