International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 09 Issue: 04 | Apr 2022 www.irjet.net p-ISSN: 2395-0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 2975 Flexural and Torsional Behavior of Concrete Filled Tubular Flange Girder Deep Patel 1 , Prof.V.B.Patel 2 , Dr.V.A.Arekar 3 1 M.Tech.(Civil) Structural Engineering, BVM Engineering College, Vallabh Vidyanagar, Gujarat. 2,3 Associate Professor, Dept. Of Structural Engineering, BVM Engineering College, Vallabh Vidyanagar, Gujarat. ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - In today's fast-growing world, new building techniques and various components are being introduced to make the building more efficient and economical. The main purpose of the study is to provide a brief overview of the unusual component called Concrete Filled Tubular Flange Girder. The purpose of the research was achieved by understanding the various research papers related to the above-mentioned topic. Research has shown how this section helps to reduce member sizes, and improve structural strength. Key Words: Finite element analysis, flexural strength, rectangular concrete filled tubular flange girders, concrete confinement, composite construction, concrete filled tubular flange girder, steel girder, I section 1. INTRODUCTION Metal-concrete composite construction is very popular in modern construction due to its economic and structural efficiency, as well as its easy construction. Composite structures usually use composite materials of steel and concrete in the right way, where steel usually carries strong pressures and concrete that balance this emphasis on carrying heavy loads, leading to safer and more efficient structures. The high tensile strength and ductility of the metal combined with the high compressive strength and durability of the concrete result in an effective composite action. And this paper focuses on a new architectural solution called concrete filled with tubular flange girders (CFTFGs). Generally a beam when the upper flange is replaced by a steel tube filled with concrete rather than a CFTFG. The compression flange can be circular, rectangular, pentagonal etc. These components have a higher resistance to lateral torsional buckling compared to a standard steel beam of the same depth, width and weight of the metal and are therefore able to carry heavier loads than longer spans. In recent years, CFST-filled steel tubes (CFSTs) have received increasing attention from both research and engineering communities who drive them because of their beneficial properties such as material efficiency and competitive construction costs and are therefore widely used as columns and beams. CFSTs can improve structural structural features compared to traditional stainless steel parts due to the composite action that grows between steel and concrete. This composite practice has been investigated by many researchers using experimental and theoretical methods. It has been shown that the main concrete can prevent the binding of the metal tube area and increase the stability and strength of the joint. On the other hand, a steel tube provides closed pressure to the concrete and forces the concrete into a triaxial stress state as shown in Figure 1. In addition, in terms of construction, the steel tube provides form-function concrete, thus. reducing the need for expensive temporary jobs. Figure 1 Concrete confined by the steel tube subjected to triaxial compressive stresses When the upper flange of the normal I-section beam is replaced by CFST, a new type of steel-concrete composite rod is formed, known as a concrete-filled tubular flange girder (CFTFG). A number of researchers have investigated the behavior of CFTFGs in recent years and studies have often focused on members with a circular or rectangular compression flange. This study included both a finite element (FE) analysis and a large-scale study to investigate the potential for flexibility and stability. FE models include the effects of material imperfections and initial geometric imperfections, but residual stress was overlooked.