Compression Splices of Reinforcing Bars in Reactive Powder Concrete
Compression splices are widely used in compression members such as columns in multi- story buildings. There are efficient design equations for compression splice of reinforcement embedded in conventional concrete proposed by design codes of practice. However, there is no design equation for compression splice in compression members made of reactive powder concrete (RPC). So, it is required to introduce a design equation to calculate the steel bars lap splice length of RPC compression members. In this study, an experimental work was conducted to investigate the effect of different variables on compression splices strength. These variables were compressive strength of concrete, transverse reinforcement amount, splice length, yield stress of reinforcement and spliced rebar diameter. The experimental results showed that; Increase in the yield stress of reinforcing bars, length of spliced bars and compressive strength of concrete result in increasing in splice strength. Meanwhile, increase in diameter of reinforcing bars result in decreasing in compression splice strength. The increase in the amount of transverse reinforcement has insignificant effect on compression spliced strength of rebar. Finite element analysis was used to analyze the tested specimens and compared between numerical and experimental result was carried out. The numerical and experimental ultimate load and load-deflection behavior is very close to each other. Finite element method was used to investigate a wide range of experimental variables values through a parametric analysis. A new proposing equation for compression splicing of rebar in RPC column is presented in this research.
Le Hoang, An, and Ekkehard Fehling. “Influence of Steel Fiber Content and Aspect Ratio on the Uniaxial Tensile and Compressive Behavior of Ultra High Performance Concrete.” Construction and Building Materials 153 (October 2017): 790–806. doi:10.1016/j.conbuildmat.2017.07.130.
Chun, Sung-Chul, and Sung-Ho Lee. “Experimental Evaluation of Bearing and Bond Strengths in Compression Splices.” Journal of the Korea Concrete Institute 24, no. 2 (April 30, 2012): 129–136. doi:10.4334/jkci.2012.24.2.129.
ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary, American Concrete Institute, Farmington Hills, March; 2011, 233.
CEB-FIB, FIB Recommendations, Practical Design of Structural Concrete, 1999, 133.
Cairns, John. “Strength of Compression Splices: A Reevaluation of Test Data.” ACI Journal Proceedings 82, no. 4 (1985). doi:10.14359/10363.
Chun S., Lee S., and Oh B. “Compression Lap Splice in Unconfined Concrete of 40 and 60 MPa (5800 and 8700 Psi) Compressive Strengths.” ACI Structural Journal 107, no. 02 (2010): 170–178. doi:10.14359/51663533.
Askar, Hamed S. “An Experimental Investigation on Contact Compression Lap Splice in Circular Columns.” HBRC Journal 12, no. 2 (August 2016): 137–146. doi:10.1016/j.hbrcj.2014.12.002.
Giamundo, Vincenzo, Gian Piero Lignola, Francesco Fabbrocino, Andrea Prota, and Gaetano Manfredi. “Influence of FRP Wrapping on Reinforcement Performances at Lap Splice Regions in RC Columns.” Composites Part B: Engineering 116 (May 2017): 313–324. doi:10.1016/j.compositesb.2016.10.069.
Tabatabaei, Amirhomayoon, Abolfazl Eslami, Hamdy M. Mohamed, and Brahim Benmokrane. “Strength of Compression Lap-Spliced GFRP Bars in Concrete Columns with Different Splice Lengths.” Construction and Building Materials 182 (September 2018): 657–669. doi:10.1016/j.conbuildmat.2018.06.154.
Chen, Hongbing, Mahadi Masud, Jamshaid Sawab, Hsuan Wen Huang, Bin Xu, Y.L. Mo, and Thomas T.C. Hsu. “Parametric Study on the Non-Contact Splices at Drilled Shaft to Bridge Column Interface Based on Multiscale Modeling Approach.” Engineering Structures 180 (February 2019): 400–418. doi:10.1016/j.engstruct.2018.11.054.
Najafgholipour, M.A., S.M. Dehghan, M. Khani, and A. Heidari. “The Performance of Lap Splices in RC Beams Under Inelastic Reversed Cyclic Loading.” Structures 15 (August 2018): 279–291. doi:10.1016/j.istruc.2018.07.011.
Naqvi, Syed, Karam Mahmoud, and Ehab El-Salakawy. “Effect of Axial Load and Steel Fibers on the Seismic Behavior of Lap-Spliced Glass Fiber Reinforced Polymer-Reinforced Concrete Rectangular Columns.” Engineering Structures 134 (March 2017): 376–389. doi:10.1016/j.engstruct.2016.12.053.
Rave-Arango, José F., Carlos A. Blandón, José I. Restrepo, and Fabio Carmona. “Seismic Performance of Precast Concrete Column-to-Column Lap-Splice Connections.” Engineering Structures 172 (October 2018): 687–699. doi:10.1016/j.engstruct.2018.06.049.
Anagnostou, Evgenia, Theodoros C. Rousakis, and Athanasios I. Karabinis. “Seismic Retrofitting of Damaged RC Columns with Lap-Spliced Bars Using FRP Sheets.” Composites Part B: Engineering 166 (June 2019): 598–612. doi:10.1016/j.compositesb.2019.02.018.
Chun, Sungchul. “Components of Compression Splice Resistances in High-Strength Concrete.” Magazine of Concrete Research 69, no. 10 (May 2017): 502–511. doi:10.1680/jmacr.16.00412.
Pam, H.J., and J.C.M. Ho. “Effects of Steel Lap Splice Locations on Strength and Ductility of Reinforced Concrete Columns.” Advances in Structural Engineering 13, no. 1 (February 2010): 199–214. doi:10.1260/1369-43184.108.40.206.
Lusas Theory Manual, Volume 1 Version 15.0: Issue 1 Surrey, KT1 1HN, United Kingdom, 2013.
Al-Quraishi, Hussein, Mahdi Al-Farttoosi, and Raad AbdulKhudhur. “Tension Lap Splice Length of Reinforcing Bars Embedded in Reactive Powder Concrete (RPC).” Structures 19 (June 2019): 362–368. doi:10.1016/j.istruc.2018.12.011.
Qiu, Chengyu, Chenting Ding, Xuhui He, Lei Zhang, and Yu Bai. “Axial Performance of Steel Splice Connection for Tubular FRP Column Members.” Composite Structures 189 (April 2018): 498–509. doi:10.1016/j.compstruct.2018.01.100.
Vieito, Ismael, Manuel F. Herrador, Fernando Martínez-Abella, and Fernando Varela-Puga. “Proposal and Assessment of an Efficient Test Configuration for Studying Lap Splices in Reinforced Concrete.” Engineering Structures 165 (June 2018): 1–10. doi:10.1016/j.engstruct.2018.03.004.
- There are currently no refbacks.
Copyright (c) 2019 hussein abbas Al-Quraishi
This work is licensed under a Creative Commons Attribution 4.0 International License.