Title:
Gravity Load Effect on Seismic Response of Glass Fiber-Reinforced Polymer-Reinforced Concrete Slab-Column Edge Connections
Author(s):
Mohammed G. El-Gendy and Ehab F. El-Salakawy
Publication:
Structural Journal
Volume:
117
Issue:
5
Appears on pages(s):
41-52
Keywords:
cyclic loading; drift capacity; edge connection; flat plate; glass fiber-reinforced polymer (GFRP); gravity shear ratio; punching shear; seismic loading; slab-column connection
DOI:
10.14359/51724665
Date:
9/1/2020
Abstract:
When reinforced concrete (RC) flat-plate systems are used as gravity force-resisting systems in regions of high seismic activities, they are required to accommodate at least 1.50% drift ratio without jeopardizing their gravity load capacity. The current codes and standards in North America limit the allowable gravity shear ratio in steel-RC flat-plate systems without shear reinforcement to 0.4 for the system to be able to sustain the 1.50% drift capacity. This paper reports the results of an inaugural experimental study investigating the effect of gravity shear ratio on the drift capacity of slab-column edge connections reinforced with glass fiber-reinforced polymers (GFRP) reinforcement. Three full-scale GFRP-RC edge connections were tested under a combination of gravity and uniaxial reversed-cyclic lateral loads. It was concluded that the 0.4 limit on the gravity shear ratio can be relaxed in the case of GFRP-RC connections.
Related References:
ACI Committee 318, 2019, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19),” American Concrete Institute, Farmington Hills, MI, 624 pp.
ACI Committee 374, 2014, “Acceptance Criteria for Moment Frames Based on Structural Testing and Commentary (ACI 374.1-05),” American Concrete Institute, Farmington Hills, MI, 9 pp.
ACI Committee 440, 2015, “Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer (FRP) Bars (ACI 440.1R-15),” American Concrete Institute, Farmington Hills, MI, 88 pp.
Anggadjaja, E., and Teng, S., 2008, “Edge-Column Slab Connections under Gravity and Lateral Loading,” ACI Structural Journal, V. 105, No. 5, Sept.-Oct., pp. 541-551.
Arafa, A.; Farghaly, A.; and Benmokrane, B., 2018, “Experimental Behavior of GFRP-Reinforced Concrete Squat Walls Subjected to Simulated Earthquake Load,” Journal of Composites for Construction, ASCE, V. 22, No. 2, p. 0000836. doi: 10.1061/(ASCE)CC.1943-5614.0000836
ASTM D7914/D7914M-14, 2014, “Standard Test Method for Strength of Fiber Reinforced Polymer (FRP) Bent Bars in Bend Locations,” ASTM International, West Conshohocken, PA, 13 pp.
ASTM D7205/D7205M-06(2016), 2016, “Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars,” ASTM International, West Conshohocken, PA, 13 pp.
Canadian Consulting Engineer, 2008, “Fatal Parking Garage Roof Collapse in Montreal,” https://www.canadianconsultingengineer.com/engineering/fatal-parking-garage-roof-collapse-in-montreal/1000087799/. (last accessed Aug. 19, 2020)
CSA A23.3-19, 2019a, “Design of Concrete Structures,” Canadian Standards Association, Toronto, ON, Canada.
CSA A23.1-19/A23.2-19, 2019c, “Concrete Materials and Methods of Concrete Construction/Test Methods and Standard Practices for Concrete,” Canadian Standards Association, Toronto, ON, Canada.
CSA S413-14 (R2019), 2019b, “Parking Structures,” Canadian Standards Association, Toronto, ON, Canada.
CSA S806-12 (R2017), 2017, “Design and Construction of Building structures with Fibre-Reinforced Polymer,” Canadian Standards Association, Toronto, ON, Canada.
CSA S807-19, 2019d, “Specification for Fibre-Reinforced Polymers,” Canadian Standards Association, Toronto, ON, Canada.
Dulude, C.; Hassan, M.; Ahmed, E.; and Benmokrane, B., 2013, “Punching Shear Behavior of Flat Slabs Reinforced with Glass Fiber-Reinforced Polymer Bars,” ACI Structural Journal, V. 110, No. 5, Sept.-Oct., pp. 723-734.
Durrani, A.; Du, Y.; and Luo, Y., 1995, “Seismic Resistance of Nonductile Slab-Column Connections in Existing Flat-Slab Buildings,” ACI Structural Journal, V. 92, No. 4, July-Aug., pp. 479-487.
El-Gendy, M., and El-Salakawy, E., 2016, “Effect of Shear Studs and High Moments on Punching Behavior of GFRP-RC Slab–Column Edge Connections,” Journal of Composites for Construction, ASCE, V. 20, No. 4, p. 0000668. doi: 10.1061/(ASCE)CC.1943-5614.0000668
El-Gendy, M., and El-Salakawy, E., 2018a, “Lateral Displacement Deformability of GFRP-RC Slab-Column Edge Connections,” A Symposium Honoring Khaled Soudki: Towards Sustainable Infrastructure with Fiber Reinforced Polymer Composites, SP-322, American Concrete Institute, Farmington Hills, MI, pp. 5.1-5.20.
El-Gendy, M., and El-Salakawy, E., 2018b, “Punching Shear Behavior of GFRP-RC Slab-Column Edge Connections,” The 13th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures, SP-327, American Concrete Institute, Farmington HIlls, MI, pp. 5.1-5.20.
Gouda, A., and El-Salakawy, E., 2015, “Finite Element Modeling of GFRP-Reinforced Concrete Interior Slab-Column Connections Subjected to Moment Transfer,” Fibers (Basel, Switzerland), V. 3, No. 4, pp. 411-431. doi: 10.3390/fib3040411
Gouda, A., and El-Salakawy, E., 2016a, “Behavior of GFRP-RC Interior Slab-Column Connections with Shear Studs and High-Moment Transfer,” Journal of Composites for Construction, ASCE, V. 20, No. 4, p. 0000663 doi: 10.1061/(ASCE)CC.1943-5614.0000663
Gouda, A., and El-Salakawy, E., 2016b, “Punching Shear Strength of GFRP-RC Interior Slab-Column Connections Subjected to Moment Transfer,” Journal of Composites for Construction, ASCE, V. 20, No. 1, p. 0000597. doi: 10.1061/(ASCE)CC.1943-5614.0000597
Hasaballa, M.; El-Ragaby, A.; and El-Salakawy, E., 2011, “Seismic Performance of Exterior Beam-Column Joints Reinforced with Glass Fibre Reinforced Polymer Bars and Stirrups,” Canadian Journal of Civil Engineering, V. 38, No. 10, pp. 1092-1102. doi: 10.1139/l11-066
Hueste, M., and Wight, J., 1999, “Nonlinear Punching Shear Failure Model for Interior Slab-Column Connections,” Journal of Structural Engineering, ASCE, V. 125, No. 9, pp. 997-1008. doi: 10.1061/(ASCE)0733-9445(1999)125:9(997)
Hussein, A., and El-Salakawy, E., 2018, “Punching Shear Behavior of Glass Fiber-Reinforced Polymer–Reinforced Concrete Slab-Column Interior Connections,” ACI Structural Journal, V. 115, No. 4, July, pp. 1075-1088. doi: 10.14359/51702134
Marzouk, H.; Osman, M.; and Hussein, A., 2001, “Cyclic Loading of High-Strength Lightweight Concrete Slabs,” ACI Structural Journal, V. 98, No. 2, Mar.-Apr., pp. 207-214.
Megally, S., and Ghali, A., 1994, “Design Considerations for Slab-Column Connections in Seismic Zones,” ACI Structural Journal, V. 91, No. 3, May-June, pp. 303-314.
Megally, S., and Ghali, A., 2000a, “Seismic Behavior of Slab–Column Connections,” Canadian Journal of Civil Engineering, V. 27, No. 1, pp. 84-100. doi: 10.1139/l99-052
Megally, S., and Ghali, A., 2000b, “Punching Shear Design of Earthquake-Resistant Slab-Column Connections,” ACI Structural Journal, V. 97, No. 5, Sept.-Oct., pp. 720-730.
Mostafa, A., and El-Salakawy, E., 2018, “Behavior of GFRP-RC Slab-Column Edge Connections with High-Strength Concrete and Shear Reinforcement,” Journal of Composites for Construction, ASCE, V. 22, No. 2, p. 0000831. doi: 10.1061/(ASCE)CC.1943-5614.0000831
NRCC, 2015, “National Building Code of Canada,” NBCC 2015, National Research Council of Canada, Ottawa, ON, Canada.
Pan, A., and Moehle, J., 1989, “Lateral Displacement Ductility of Reinforced Concrete Flat Plates,” ACI Structural Journal, V. 86, No. 3, May-June, pp. 250-258.
Robertson, I., and Durrani, A., 1991, “Gravity Load Effect on Seismic Behavior of Exterior Slab-Column Connections,” ACI Structural Journal, V. 88, No. 3, May-June, pp. 255-267.
Robertson, I., and Durrani, A., 1992, “Gravity Load Effect on Seismic Behavior of Interior Slab-Column Connections,” ACI Structural Journal, V. 89, No. 1, Jan.-Feb., pp. 37-45.
Sharbatdar, M., and Saatcioglu, M., 2009, “Seismic Design of FRP Reinforced Concrete Structures,” Asian Journal of Applied Sciences, V. 2, No. 3, pp. 211-222. doi: 10.3923/ajaps.2009.211.222
Sozen, M., 1980, “Review of Earthquake Response of R.C. Buildings with a View to Drift Control.” State of the Art Reports on Earthquake Behaviour of R.C. Members and Structures.
Tavassoli, A.; Liu, J.; and Sheikh, S., 2015, “Glass Fiber-Reinforced Polymer-Reinforced Circular Columns under Simulated Seismic Loads,” ACI Structural Journal, V. 112, No. 1, Jan.-Feb., pp. 103-114. doi: 10.14359/51687227
Younis, A.; Ebead, U.; and Judd, S., 2018, “Life Cycle Cost Analysis of Structural Concrete using Seawater, Recycled Concrete Aggregate, and GFRP Reinforcement,” Construction and Building Materials, V. 175, No. 4, pp. 152-160. doi: 10.1016/j.conbuildmat.2018.04.183