Open AccessExperimental and analytical study of novel full-scale square steel tubular-UHPFRC grouted connection
Author(s) -
Shenggang Fan,
Zhenyu Huang,
Lili Sui
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/474/7/072038
Subject(s) - precast concrete , structural engineering , connection (principal bundle) , punching , stiffness , welding , column (typography) , full scale , square (algebra) , ultimate tensile strength , shear (geology) , engineering , materials science , composite material , mathematics , geometry
This paper proposes a novel full-scale square tubular-UHPFRC grouted connection for precast column-column connections. This study examines the mechanical properties of four full-scale square tubular columns fully-grouted or partially-grouted with UHPFRC via experimental and theoretical studies. The experimental program explores the ultimate resistance and failure modes of the grouted connection under axial compressive and tensile loads. The test results show that new column-column connections perform well in its resistance and stiffness while three main failure patterns include punching shear failure of end plate, welding fracture and local buckling of steel tube are observed. The theoretical model on resistance prediction explains the failure mechanisms of new connection well and it is instructive for the detail design of such novel grouted connection.