Theoretical Analysis of Composite RC Beams with Pultruded GFRP Beams subjected to Impact Loading
Received: 22 September 2023 | Revised: 8 October 2023 and 14 October 2023 | Accepted: 16 October2023 | Online: 31 October 2023
Corresponding author: Teghreed H. Ibrahim
Abstract
Glass Fiber Reinforced Polymer (GFRP) beams have gained attention due to their promising mechanical properties and potential for structural applications. Combining GFRP core and encasing materials creates a composite beam with superior mechanical properties. This paper describes the testing encased GFRP beams as composite Reinforced Concrete (RC) beams under low-velocity impact load. Theoretical analysis was used with practical results to simulate the tested beams' behavior and predict the generated energies during the impact loading. The impact response was investigated using repeated drops of 42.5 kg falling mass from various heights. An analysis was performed using accelerometer readings to calculate the generalized inertial load. The integrated acceleration record and the measured hammer load vs. time data were utilized to determine the generalized bending load and fracture energy. Four forms of energy were calculated at the maximum load. The total energy was calculated and divided into two parts: The first part was gained by the beam's rotational kinetic energy, the bending energy in the specimen, and the elastic strain energy. The second part was the hammer's kinetic energy before striking the beam. The analytical results showed that the bending energy was less than its rotational kinetic energy for the encased GFRP beams and the reference specimens. In contrast, the encased steel beams had high bending energy due to the higher impact load and deflection. Strain energy recorded lower energy values for all specimens with higher bending energy. There is a good agreement between the tested and the calculated inertial and bending force for all beams. The ratio of inertia force to the total impact load for the encased GFRP and encased steel beams to the reference beam is about 9% and 5%, respectively.
Keywords:
GFRP, composite beam, impact loading, inertial load, kinetic energy, energy-dispersiveDownloads
References
H. H. Ali and A. M. I. Said, "Flexural behavior of concrete beams with horizontal and vertical openings reinforced by glass-fiber-reinforced polymer (GFRP) bars," Journal of the Mechanical Behavior of Materials, vol. 31, no. 1, pp. 407–415, Jan. 2022.
M. A. E. Zareef, "An Experimental and Numerical Analysis of the Flexural Performance of Lightweight Concrete Beams reinforced with GFRP Bars," Engineering, Technology & Applied Science Research, vol. 13, no. 3, pp. 10776–10780, Jun. 2023.
M. N. S. Hadi and J. S. Yuan, "Experimental investigation of composite beams reinforced with GFRP I-beam and steel bars," Construction and Building Materials, vol. 144, pp. 462–474, Jul. 2017.
M. N. S. Hadi and J. Youssef, "Experimental Investigation of GFRP-Reinforced and GFRP-Encased Square Concrete Specimens under Axial and Eccentric Load, and Four-Point Bending Test," Journal of Composites for Construction, vol. 20, no. 5, Oct. 2016, Art. no. 04016020.
A. Q. Bhatti, N. Kishi, H. Mikami, and T. Ando, "Elasto-plastic impact response analysis of shear-failure-type RC beams with shear rebars," Materials & Design, vol. 30, no. 3, pp. 502–510, Mar. 2009.
K. Fujikake, B. Li, and S. Soeun, "Impact Response of Reinforced Concrete Beam and Its Analytical Evaluation," Journal of Structural Engineering, vol. 135, no. 8, pp. 938–950, Aug. 2009.
N. K. A. Oukaili and A. Al Shammari, "Impact Response of Reinforced Concrete T-Beams with Multiple Web Opening And Its Theoretical Simulation," in Second International Conference on Science, Engineering and Environment, Osaka, Japan, Nov. 2016, pp. 234–240.
N. K. Oukaili and M. M. Khattab, "Serviceability and ductility of partially prestressed concrete beams under limited cycles of repeated loading," International Journal of GEOMATE, vol. 17, no. 60, pp. 9–15, Nov. 2021.
A. N. Hassooni and S. R. A. Zaidee, "Behavior and Strength of Composite Columns under the Impact of Uniaxial Compression Loading," Engineering, Technology & Applied Science Research, vol. 12, no. 4, pp. 8843–8849, Aug. 2022.
J. Abd and I. K. Ahmed, "The Effect of Low Velocity Impact Loading on Self-Compacting Concrete Reinforced with Carbon Fiber Reinforced Polymers," Engineering, Technology & Applied Science Research, vol. 11, no. 5, pp. 7689–7694, Oct. 2021.
N. P. Banthia, "Impact resistance of concrete," Ph.D. dissertation, University of British Columbia, Vancouver, BC, Canada, 1987.
A. A. Allawi, "Behavior of Strengthened Composite Prestressed Concrete Girders under Static and Repeated Loading," Advances in Civil Engineering, vol. 2017, Dec. 2017, Art. no. e3619545.
D. A. Abrams, "Effect of Rate of Application of Load on the Compressive Strength of Concrete," Proceeding of ASTM, vol. 17, pp. 364–377, 1917.
B. Cotterell, "Fracture Toughness and the Charpy V Notch Impact Test," British Welding Association, vol. 9, no. 2, pp. 83–90, 1962.
S. Abrate, "Modeling of impacts on composite structures," Composite Structures, vol. 51, no. 2, pp. 129–138, Feb. 2001.
S. M. Soleimani and N. Banthia, "Reinforced Concrete Beams under Impact Loading and Influence of a GFRP Coating," International Journal of Civil Engineering, vol. 1, pp. 68–77, Mar. 2010.
C. Evci, "Thickness-dependent energy dissipation characteristics of laminated composites subjected to low velocity impact," Composite Structures, vol. 133, pp. 508–521, Dec. 2015.
A. A. Allawi and S. I. Ali, "Flexural Behavior of Composite GFRP Pultruded I-Section Beams under Static and Impact Loading," Civil Engineering Journal, vol. 6, no. 11, pp. 2143–2158, Nov. 2020.
T. H. Ibrahim, A. A. Allawi, and A. El-Zohairy, "Experimental and FE analysis of composite RC beams with encased pultruded GFRP I-beam under static loads," Advances in Structural Engineering, vol. 26, no. 3, pp. 516–532, Feb. 2023.
T. H. Ibrahim, A. A. Allawi, and A. El-Zohairy, "Impact Behavior of Composite Reinforced Concrete Beams with Pultruded I-GFRP Beam," Materials, vol. 15, no. 2, Jan. 2022, Art. no. 441.
ASTM C39/C39M-18(2018), Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. West Conshohocken, PA, USA: ASTM International, 2018.
BS1811-116-11: Method for determination of compressive strength of concrete cubes. BSI, 2011.
ASTM C496/C496M-17(2017), Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens. West Conshohocken, PA, USA: ASTM International, 2017.
ASTM C78/C78M-22(2022), Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading). West Conshohocken, PA, USA: ASTM International, 2022.
ASTM C469/C469M-14(2014), Standard Test Method For Static Modulus Of Elasticity And Poisson’s Ratio Of Concrete In Compression. West Conshohocken, PA, USA: ASTM International, 2014.
ASTM A370-22(2022), Standard Test Methods And Definitions For Mechanical Testing Of Steel Products. West Conshohocken, PA, USA: ASTM International, 2022.
ASTM D695-15(2015), Standard Test Method for Compressive Properties of Rigid Plastics. West Conshohocken, PA, USA: ASTM International, 2015.
ISO 527-5:2021. Plastics Determination of tensile properties Part 5: Test conditions for unidirectional fibre-reinforced plastic composites. ISO, 2021.
A. Bentur, S. Mindess, and N. Banthia, "The behaviour of concrete under impact loading: Experimental procedures and method of analysis," Materials and Structures, vol. 19, no. 5, pp. 371–378, Sep. 1986.
A. I. Said and E. M. Mouwainea, "Behaviours of reinforced concrete slabs under static loads and high-mass low velocity impact loads," IOP Conference Series: Materials Science and Engineering, vol. 1067, no. 1, Oct. 2021, Art. no. 012036.
M. C. Liejy et al., "Prediction of the Bending Strength of a Composite Steel Beam–Slab Member Filled with Recycled Concrete," Materials, vol. 16, no. 7, Jan. 2023, Art. no. 2748.
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Copyright (c) 2023 Teghreed H. Ibrahim, Ihsan A. S. Alshaarbaf , Abbas A. Allawi, Nazar K. Oukaili, Ayman El-Zohairy, AbdulMuttalab I. Said
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