earticle

영어

The objective of this research is to provide better knowledge on the behavior of strong axis SRC column - RC beam joint, supported by experimental results, that can be broadly applicable to many structures with similar characteristics. For this purpose, firstly literature reviews and field survey were made to classify the most commonly used for these types of joints.
Then, experimental program was designed and performed including 6 SRC column - RC beam joint specimens designed with various joint details obtained from the literature reviews and field survey; ① RCW-P (passing through type), ② RCW-W (passing through and wing plate type), ③ RCW-F (passing through and field welding on the steel column type), ④ RCT-W (wing plate and passing through within the effective width of slab type), ⑤ HBR-L (long bracket type), and ⑥ HBR-S (short bracket type). Using the experimental results obtained from the quasi-static cyclic testing of 6 test specimens, structural performances of the joints such as hysteretic curve comparisons, maximum strength capacity, strength degradation beyond the maximum strength was reached, ductility comparisons, and energy dissipation capacity were investigated then following conclusions were made. Specimens with wide beam shape (RCW-P, RCW-W, RCW-F) and T beam shape (RCT-W) showed better structural performances than the bracket type specimens (HBR-L, HBR-S). These specimens also revealed to have higher strength capacities than the nominal design strength, consequently these types of joint details are recommended to be used in the field area. However, H beam bracket type specimens (HBR-L, HBR-S) need further study both analytical and experimental to verify the reason for unexpected structural performances.