Experimental Study on use of Cold Formed Steel Sections as Truss Members
Padmanaban R1, Suresh babu S2
1Padmanaban R, P.H.D., Assistant Professor, Department of Chemistry, Vellore Institute of Technology, Madhya Pradesh, India.
2Suresh babu S, P.H.D., Assistant Professor, Department of Chemistry, Vellore Institute of Technology, Madhya Pradesh, India.
Manuscript received on 05 April 2019 | Revised Manuscript received on 14 April 2019 | Manuscript Published on 24 May 2019 | PP: 101-106 | Volume-8 Issue-6S3 April 2019 | Retrieval Number: F10180486S319/19©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper describes the experimental behaviour of a flat pratt truss which is entirely fabricated using cold-formed steel (CFS) angle sections. Three modeled specimens of coldformed flat pratt truss of each 1m span were fabricated with back-to-back angle sections of 50X50X3.0mm. Five joints were made at the junction of top chord members and the vertical members, Similarly five joints were also made at bottom chord members. The intersection of chord members and vertical members were connected by bolts to the gusset plates at the junction. Experimental tests were performed by applying five concentrated loads at each junction until the failure of the member was taking place. Numerical analysis was also carried out for the truss using the finite element software and the obtained results were compared with the arrived experimental results. Both the experimental and analytical results reveals that the predominant failure of the truss occurs at the top corner junction which is nothing but a shear failure and at the mid junction of the bottom chord member which is a sagging or bending failure. Based on the experimental results it was observed that the ultimate load of the truss was increased by 33% due to the presence of gusset plates and the shear strength of the bolts in the truss. The displacements corresponding to the ultimate loads were also been noted at the junction and their behaviour were analyzed in detail as a comparative study of both experimental and analytical results.
Keywords: Angle Sections, Flat Pratt Truss, Gusset Plate, Truss Joints.
Scope of the Article: Seismic Evaluation of Building Nonstructural Components