Effects of Bottom Reinforcement on Hysteretic Behavior of Posttensioned Flat Plate Connections
- Authors
- Han, Sang Whan; Kee, Seong-Hoon; Park, Young-Mi; Ha, Sang-Su; Wallace, John W.
- Issue Date
- Sep-2009
- Publisher
- ASCE-AMER SOC CIVIL ENGINEERS
- Keywords
- Connections; Lateral forces; Plates; Post tensioning; Reinforcement; Slabs
- Citation
- JOURNAL OF STRUCTURAL ENGINEERING-ASCE, v.135, no.9, pp.1019 - 1033
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF STRUCTURAL ENGINEERING-ASCE
- Volume
- 135
- Number
- 9
- Start Page
- 1019
- End Page
- 1033
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/176277
- DOI
- 10.1061/(ASCE)0733-9445(2009)135:9(1019)
- ISSN
- 0733-9445
- Abstract
- Flat plate systems are commonly designed as a gravity-force-resisting system (GFRS) along with stiffer lateral-force-resisting systems (LFRS) such as shear walls, and moment resisting frames; however, deformation compatibility between the GFRS and LFRS results in positive moments (producing tension at the slab bottom) at the slab-column connections in flat plate systems. Continuous slab-bottom reinforcement (integrity reinforcement) passing through the column is required to prevent progressive collapse; however, for posttensioned flat plate (PT-flat plate) systems, there have been arguments among engineers on applying continuous slab-bottom reinforcement since ACI 318 and 352 provisions do not clearly specify the requirement on the slab-bottom reinforcement for PT flat plates. The purpose of this study is to investigate the effects of continuous slab-bottom reinforcement passing through the column core on the hysteretic behavior of the PT slab-column connections. Test results for six, 3/5 scaled specimens for interior PT flat plate connections subjected to constant gravity loads and quasistatic reversed cyclic lateral loads are presented and indicate that the slab-bottom reinforcement conforming to ACI-ASCE 352R.1 is not required to prevent collapse, but does significantly improves the hysteretic energy absorption capacity.
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