IRJET- Comparative Study of With and without Crack Propagation on Double Edged Beam using Different Retrofitting Conditions
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The document presents a comparative study on the crack propagation in double-edged steel beams under different retrofitting conditions using finite element analysis. Various retrofitting techniques including fiber reinforced polymer plates, steel plates, and ribs are modeled and their effectiveness in improving load capacity and fatigue behavior is analyzed. The results show that retrofitting with ribs provides better performance under central loading conditions, steel plates perform better under two-point loading, and FRP plates have higher strength under three-point loading, both with and without an initial crack in the beam.
![International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 05 | May 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 6398
CHART 1- Force v/s displacement graph – central
loading with crack
CHART 2- Force v/s displacement graph – central
loading without crack
5. CONCLUSION
This paper focused on various strengthening
technique by retrofitting steel beam using FRP
plates, rib, and steel plates. From this study,
strength of steel beam with and without crack
retrofitted by Rib gives better result in central
loading condition and for 2 point loading condition
with and without crack , steel plate gives better
result and for 3 point loading condition with and
without crack, FRP gives better results.
REFERENCES
[1] Omar H. Elkhabeery,sheriff S Safar “Flexural
Strength Of Steel I Beam Reinforced With Cfrp
Sheets At Tension Flange” Journal Of
Constructional Steel Research 148(2018).
[2] Xiao-ling Zhao,” Frp-strengthened Metallic
Structures”, Crc Press, 2013.
[3] Mohamed Elchalakani, Dilum Fernando, “Plastic
Mechanism Analysis Of Unstiffened Steel I-section
Beams Strengthened With Cfrp Under 3-
point Bending”, Thinwalled Struct. 53 (2012) 58–
71.
[4] B. Shervani-tabar, A. Davaran,” Experimental
Study On Bonding Improvement Of CFRP Strips
Used For Strengthening Of Steel Beams”, Asian J.
Civil Eng. (Building And Housing) 11 (1) (2010)
57–70.](https://image.slidesharecdn.com/irjet-v6i5891-191014045616/85/IRJET-Comparative-Study-of-With-and-without-Crack-Propagation-on-Double-Edged-Beam-using-Different-Retrofitting-Conditions-3-320.jpg)
IRJET- Comparative Study of With and without Crack Propagation on Double Edged Beam using Different Retrofitting Conditions
- 1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 05 | May 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 6396 Comparative Study of with and without Crack Propagation on Double Edged Beam using Different Retrofitting Conditions Ashna P Sainudeen M.TECH Student, Structural Engineering And Construction Management, Indira Gandhi Institute Of Engineering And Technology, Nellikuzhi, Kerala, India ----------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Externally bonded fiber reinforced polymer (FRP) plates, rib and corrugated plates can significantly improve the fatigue behavior of cracked steel members. This increases the transverse direction load transfer capacity by using corrugated plates. The modification of steel beam using rib alternative arrangement can also increase load carrying capacity. Steel beams are evaluated based on the fracture mechanics theory and finite element (FE) modeling to predict the crack growth behavior .This method was verified by comparing the different retrofitted models results. The comparative results indicate that the crack growth life of the strengthened double-edged cracked steel beam can be improved. Keywords: Crack, Fatigue Behavior, FRP Plates, Rib, Steel Plate 1. INTRODUCTION The use of Fibre Reinforced Polymer increases the strength and repair steel beam. This technique benefits from the light weight and extra strong beam and pre crack beam to enhance the flexural capacity of different loading cases. The behavior of steel beams strengthened with FRP plates, rib and steel plate in flexure has been subjected to several studies. This study focused on investigating the effect of development load carrying capacity and determining the stress & strain capacity under non-linear loading condition. Comparing with other strengthening methods, FRP plates, rib, steel plates are recommended in this study. FRP plates are corrosion resistant material and increases durability. To increase the strength of steel beam, steel plate is attached by welding or bolted. The plates are provided with thickness of 2mm. Ribs are arranged alternatively to improve the strength and load carrying capacity. 1.1 Objective To study FRP plate on double –edged area, and finding crack propagation To study the steel plate for transverse load transfer To compare without crack and with crack beam condition 1.2 Scope To increase the load carrying capacity of double- edged beam To improve the fatigue behavior of cracked steel members. This method is more effective than the traditional welding method Increasing the strength of beam using retrofits operation by plates and ribs. 2. METHODOLOGY Literature review: To cover the past studies and understand the enhancement that can be provided for the present work. To create different type of model using ANSYS software. To apply the different types of boundary conditions. Analysis of the structure: Different types of analysis using ANSYS software. Analysis of results: The result will be analyzed and compared the all the types of models.
- 2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 05 | May 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 6397 Table -1: 3.1 BOUNDARYCONDITION GEOMETRY MEMBER DEPTH d (mm) WEB THICKNESS (mm) FLANGE WIDTH (mm) FLANGE THICKNESS (mm) BEAM 150 4.8 80 6.8 3. DIFFERENT TYPES OF MODELS FIG -1: Central Loading FIG- 2: Crack In Central Loading FIG- 3: FRP In Central Loading FIG- 4: Rib In Central Load FIG-7: Normal beam FIG-8: Double edged beam 4. RESULT AND REVIEW FIG-9:Stress Central FIG-10: Stress Frp FIG-11: Stress Rib FIG-12: Stress Steel FIG–5: Steel plate in central loading FIG- 6: Mesh
- 3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 05 | May 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 6398 CHART 1- Force v/s displacement graph – central loading with crack CHART 2- Force v/s displacement graph – central loading without crack 5. CONCLUSION This paper focused on various strengthening technique by retrofitting steel beam using FRP plates, rib, and steel plates. From this study, strength of steel beam with and without crack retrofitted by Rib gives better result in central loading condition and for 2 point loading condition with and without crack , steel plate gives better result and for 3 point loading condition with and without crack, FRP gives better results. REFERENCES [1] Omar H. Elkhabeery,sheriff S Safar “Flexural Strength Of Steel I Beam Reinforced With Cfrp Sheets At Tension Flange” Journal Of Constructional Steel Research 148(2018). [2] Xiao-ling Zhao,” Frp-strengthened Metallic Structures”, Crc Press, 2013. [3] Mohamed Elchalakani, Dilum Fernando, “Plastic Mechanism Analysis Of Unstiffened Steel I-section Beams Strengthened With Cfrp Under 3- point Bending”, Thinwalled Struct. 53 (2012) 58– 71. [4] B. Shervani-tabar, A. Davaran,” Experimental Study On Bonding Improvement Of CFRP Strips Used For Strengthening Of Steel Beams”, Asian J. Civil Eng. (Building And Housing) 11 (1) (2010) 57–70.