Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/107316
Title: Behaviour of precast concrete beam-column sub-assemblages subject to column removal
Authors: Kang, Shao-Bo
Tan, Kang Hai
Keywords: DRNTU::Engineering::Civil engineering::Structures and design
Issue Date: 2015
Source: Kang, S.-B. & Tan, K. H. (2015). Behaviour of precast concrete beam–column sub-assemblages subject to column removal. Engineering structures, 93, 85-96.
Series/Report no.: Engineering structures
Abstract: Under column removal scenarios, initiation of alternate load paths via adjacent bridging beams to redistribute vertical loads requires certain level of ductility and continuity in beam–column joints. Although this approach does not consider the magnitude of the blast event, it is threat-independent and offers a minimum level of robustness against column removal scenarios. This paper studies the behaviour of precast concrete sub-assemblages which comprised two precast beams and a precast column joining together by cast-in-place concrete topping above the two beams and the beam–column joint. The top longitudinal reinforcement in the structural topping of precast beams passed through the beam–column joint continuously. However, the bottom beam longitudinal reinforcement was either lap-spliced or anchored as a 90° bend within the cast-in-place joint. Due to discontinuity of bottom beam longitudinal reinforcement, the ability of such an assemblage to develop compressive arch action (CAA) and subsequent catenary action has to be investigated, in particular, the effect of the top and bottom beam longitudinal reinforcement ratios. Test results show that significant CAA and catenary action developed in the beams under column removal scenarios, with pull-out failure of the bottom beam reinforcement in the joint. The enhancement of CAA and catenary action to structural resistance greatly depends on joint detailing and beam reinforcement ratio. Furthermore, the effectiveness of horizontal shear transfer between concretes cast at different times is examined at large deformation stage. Finally, practical suggestions are given to enhance structural resistance of a similar type of precast concrete sub-assemblages.
URI: https://hdl.handle.net/10356/107316
http://hdl.handle.net/10220/25346
DOI: 10.1016/j.engstruct.2015.03.027
Rights: © 2015 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Engineering Structures, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/ 10.1016/j.engstruct.2015.03.027].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

Files in This Item:
File Description SizeFormat 
Behaviour of precast concrete beam–column sub-assemblages subject to column removal.pdf1.17 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 5

39
Updated on Jul 24, 2020

PublonsTM
Citations 5

44
Updated on Mar 7, 2021

Page view(s) 50

351
Updated on Dec 5, 2021

Download(s) 5

436
Updated on Dec 5, 2021

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.