Experimental Study on Anchoring Performance of Short-Lapped-Rebar Splices with Pre-Set Holes and Spiral Hoops

The precast concrete structure has the advantage of a short construction period, less labor consumption, and pollution. lapped-rebar splice is type connection for assembled reinforced shear walls in structure. In this study, anchoring performance short-lapped-rebar with corrugated metal duct spiral hoops investigated. A total 30 specimens were designed considering influences rebar diameter lapped length, tension testing was carried out. results show that 0.15 times suggested length GB 50010-2010 fail by fracture rebar, while 0.1 0.05 pull-out failure rebar. ultimate bond strength higher than conventional specimens. stress anchored splices distributed symmetrically along longitudinal direction. maximum reaches 35 MPa, which approximately 1.4 semi-empirical model predicting proposed, it shows good agreement tested values; average error estimated from proposed only 4.49%.