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Effects of bottom reinforcement on hysteretic behavior of posttensioned flat plate connections
- Source :
- Journal of Structural Engineering. Sept, 2009, Vol. 135 Issue 9, p1019, 15 p.
- Publication Year :
- 2009
-
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. DOI: 10.1061/(ASCE)0733-9445 (2009) 135:9(1019) CE Database subject headings: Post tensioning; Slabs; Connections; Lateral forces; Plates; Reinforcement.
Details
- Language :
- English
- ISSN :
- 07339445
- Volume :
- 135
- Issue :
- 9
- Database :
- Gale General OneFile
- Journal :
- Journal of Structural Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.207461520