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http://dx.doi.org/10.12989/sem.2018.68.4.485

Structural performance of GFRP-concrete composite beams  

Yang, Yong (School of Civil Engineering, Xi'an University of Architecture and Technology)
Xue, Yicong (School of Civil Engineering, Xi'an University of Architecture and Technology)
Zhang, Tao (School of Civil Engineering, Xi'an University of Architecture and Technology)
Tian, Jing (School of Civil Engineering, Xi'an University of Architecture and Technology)
Publication Information
Structural Engineering and Mechanics / v.68, no.4, 2018 , pp. 485-495 More about this Journal
Abstract
This paper presents the results of an experimental study on the structural performance of an innovative GFRP-concrete composite beam construction, which is reinforced with longitudinal GFRP pultruded box-profile and transverse steel stirrups. GFRP perfobond (PBL) shear connectors are employed to enhance the bonding performance between the GFRP profile and the concrete portion. To investigate the shear and flexural performance of this composite system, eight specimens were designed and tested under three-point and four-point bending. The main variables were the height of the composite beam and the shear span-to-depth ratio. The test results indicated that bonding cracks did not occur at the interface between the GFRP profile and the concrete until the final stage of the test. This shows that the specimens performed well as composite beams during the test and that the GFRP PBL connectors were reliable. Based on the test results, two calculation methods were used to determine the flexural and shear capacity of the composite beams. A comparative study of the test and theoretical results suggests that the proposed methods can reasonably predict both the flexural and shear capacities of the specimens, whereas the provisions of ACI 440 are relatively conservative on both counts.
Keywords
GFRP-concrete composite beam; flexural performance; shear performance; experimental study; static load;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Thomas, J. and Ramadassa, S. (2015), "Design for shear strength of concrete beams longitudinally reinforced with GFRP bars", Struct. Eng. Mech., 53(1), 41-55.   DOI
2 Unsal, I., Tokgoz, S., Cagatay, I.H. and Dundar, C. (2017), "A study on load-deflection behavior of two-span continuous concrete beams reinforced with GFRP and steel bars", Struct. Eng. Mech., 63(5), 629-637.   DOI
3 Wight, J.K. (2011), Reinforced Concrete: Mechanics and Design, Pearson Publishing Ltd, New Jersey, U.S.A.
4 Xin, H., Liu, Y., He, J., Fan, H. and Zhang, Y. (2015), "Fatigue behavior of hybrid GFRP-concrete bridge decks under sagging moment", Steel Compos. Struct., 18(4), 925-946.   DOI
5 Yang, Y., Xue, Y., Yu, Y., Liu, R. and Ke, S. (2017), "Study of the design and mechanical performance of a GFRP-concrete composite deck", Steel Compos. Struct., 24(6), 679-688.   DOI
6 Zuo, Y., Liu, Y. and He, J. (2018), "Experimental investigation on hybrid GFRP-concrete decks with T-shaped perforated ribs subjected to negative moment", Constr. Build. Mater., 158, 728-741.
7 Placas, A., Regan, P.E. and Baker, A.L. (1971), "Shear failure of reinforced concrete beams", ACI, 68(10), 763-773.
8 ACI 440R (2006), Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars, American Concrete Institute, Michigan, U.S.A.
9 Aydin, F. and Saribiyik, M. (2013), "Investigation of flexural behaviors of hybrid beams formed with GFRP box section and concrete", Constr. Build. Mater., 41(2), 563-569.   DOI
10 Choi, K.K., Park, H.G. and Wight, J.K. (2007), "Unified shear strength model for reinforced concrete beams-part i: Development", ACI Struct. J., 104(2), 142-152.
11 Choi, K.K. and Park, H.G. (2007), "Unified shear strength model for reinforced concrete beams-part ii: Verification and simplified method", ACI Struct. J., 104(2), 153-161.
12 GB/T 1447 (2005), Fiber-Reinforced Plastics Composites-Determination of Tensile Properties, AQSIQ, Beijing, China.
13 Fam, A. and Skutezky, T. (2006), "Composite T-beams using reduced-scale rectangular FRP tubes and concrete slabs", J. Compos. Constr., 10(2), 172-181.   DOI
14 GB 50010 (2010), Code for Design of Concrete Structures, MoHURD, Beijing, China.
15 GB/T228.1 (2010), Metallic Materials-Tensile Testing-Part 1: Method of Test at Room Temperature, AQSIQ, Beijing, China.
16 JTG D60 (2015), General Code for Design of Highway Bridges and Culverts, MoT, Beijing, China.
17 Hadi, M.N.S. and Yuan, J.S. (2017), "Experimental investigation of composite beams reinforced with GFRP I-beam and steel bars", Constr. Build. Mater., 144, 462-474.   DOI
18 Hassanzadeh, A.M. and Dehestani, M. (2017), "Numerical modeling of semi-confined composite beams consisting of GFRP and concrete", Struct. Eng. Mech., 62(1), 79-84.   DOI
19 Huang, L., Zhang, C., Yan, L. and Kasal, B. (2017), "Flexural behavior of U-shape FRP profile-RC composite beams with inner GFRP tube confinement at concrete compression zone", Compos. Struct., 184, 674-687.
20 Koaik, A., Bel, S. and Jurkiewiez, B. (2017), "Experimental tests and analytical model of concrete-GFRP hybrid beams under flexure", Compos. Struct., 180, 192-210.   DOI
21 Muttashar, M., Manalo, A., Karunasena, W. and Lokuge, W. (2017), "Flexural behaviour of multi-celled GFRP composite beams with concrete infill: Experiment and theoretical analysis", Compos. Struct., 159, 21-33.   DOI
22 Neagoe, C.A., Gil, L. and Perez, M.A. (2015), "Experimental study of GFRP-concrete hybrid beams with low degree of shear connection", Constr. Build. Mater., 101, 141-151.   DOI