International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 08 | Aug 2022
p-ISSN: 2395-0072
www.irjet.net
RETROFITTING OF HOT-ROLLED STEEL CHANNELS USING CFS SECTIONS SUBJECTED TO IMPACT LOADING Akhil P R1, Anima P2 1M.Tech
student, Structural Engineering, Universal Engineering College, Thrissur, Kerala professor, Civil Department, Universal Engineering College, Thrissur, Kerala ---------------------------------------------------------------------***----------------------------------- ---------------------------------2. OBJECTIVES Abstract - Errors in load calculations, excess capacity due 2Associate
to excise diversions, illegal increase in the number of floors in a building and material deterioration can lead to structure failure. Studies have been carried on retrofitting of structural steel beams has mainly focused only the adoption of Carbon Fiber Reinforced Polymer (CFRP). CFRP laminates have very low compressive strength under flexural loading. The part of a modern cross-section above the neutral axis is subjected to compressive stress and fails. In such situations, the use of CFRP laminates may not be efficient; therefore, we need to use alternative materials. Cold formed steel (CFS) has shown satisfactory performance in light and fast structures. The main objective of the project is to carry out performance impact load studies, performance studies of various material properties used for retrofitting. The result obtained that the flat plate CFS section is a more impact resistant structure than the corrugated plate CFS section. By using different materials in retrofitting steel has high force value. The maximum force value is about 484.27 N and corresponding stress value is 639.88 MPa.
The main objectives are, 1. To study the impact load confrontation of retrofitting HRS section with different shaped CFS section. 2. To evaluate the Performance of different material properties used for retrofitting 2.1 To study the impact load resistance of retrofitting HRS section with different shaped CFS section. HRS sections into closed sections (box type) by conveniently connecting CFS sections near the flange tips of the HRS channels and retrofitting the HRS channel beams. Modeling was done using ANSYS software. Here plane sheet CFS sections and corrugated sheet CFS sections are made. Table-1: Material properties
Keywords: Aluminium, corrugated sheet, retrofitting,
Material
F(Fy (MPa)
(Fu (MPa)
E (GPa)
HRS
325.7
447.6
197.2
CFS
421.3
542.1
202.4
steel.
1. INTRODUCTION 1.1 General Background Numerical analyzes were performed to study the impact load resistance of the HRS section optimization with CFS sections of different sizes. Failure of a structure occurs when it completely or partially loses its ability to support the load acting on it. Given the prevailing design deficiencies as well as poor performance due to poor construction practices, there is a need for appropriate retrofit measures to ensure structural safety.
Fig -2: Geometry of corrugated CFS sections Assembly was done according to the requirements of traditional classes. The boundary condition was set in such a way that a perpendicular load was applied at the midpoint of the CFS sections. In addition, large deformations and outof-plane dislocations are considered in the modeling. Fig -1: Geometry of plane sheet CFS section
© 2022, IRJET
|
Impact Factor value: 7.529
|
ISO 9001:2008 Certified Journal
|
Page 1847