Distinguished punching shear behaviour of unbonded post-tensioned concrete slab – CFT column vs reinforced concrete slab – CFT column connections
نویسندگان
چکیده
This article evaluates and compares the punching shear behaviour of unbonded prestressed concrete (UPC) slab - concrete-filled steel tube (CFT) column connections/joints with that reinforced (RC) connection – CFT connections. The experimental program was carried out on five large-sized samples, including three UPC samples two RC samples. Steel plate details were utilised to increase bond between column. results showed prestressing tendons significantly increased pre post-cracking stiffness slab-column connections, thereby, greatly reducing deflection than especially during serviceability phase (by up 58%). However, use resulted in a significant decrease ductility energy absorption index compared 44% 41%, respectively). Using slightly capacity, reduced strain such as vertical ribs horizontal bearing plate. At same time, helped reduce longitudinal rebars slabs.
 Keywords: Unbonded post-tensioned (UPC); connection/joint; column; flat slab; details; shear; experiment.
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ژورنال
عنوان ژورنال: T?p chí Khoa h?c Công ngh? Xây d?ng
سال: 2022
ISSN: ['2734-9489', '2615-9058']
DOI: https://doi.org/10.31814/stce.huce(nuce)2022-16(3)-03