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
ANALYSIS OF AXIAL LOAD BEHAVIOUR OF NONPRISMATIC CIRCULAR AND RECTANGULAR CFST COLUMNS Aleena Binth K H1, Amritha E K2 1M.Tech
Student, Structural Engineering, Universal Engineering College, Thrissur, Kerala Professor, Civil Department, Universal Engineering College, Thrissur, Kerala ---------------------------------------------------------------------***----------------------------------- ---------------------------------Abstract – Concrete filled steel tube (CFST) columns was 2. OBJECTIVES 2Associate
popular these days. This study was mainly used to examine presentation of non-prismatic CFST by dissimilar columns arrangement by T and L shaped columns by steel plate joining and also to examine the presentation of non-prismatic TCFST and LCFST with FRP coating. To examine performance of nonprismatic CFST column by different shapes. Result obtained that load -carrying capacity was improved a lot by introduction of steel plate stiffeners. Also the addition of FRP helps to increase the stiffness. The performance of nonprismatic CFST with non-prismatic end column elements here LCFST have ultimate load. By comparing different shapes CFST columns, here circular column have high deformation.
The main objectives are, 1. To study, performance of non-prismatic LCFST and TCFST with FRP. 2. To examine the performance of non-prismatic CFST column with different shapes of column elements 2.1 To examine the performance of non-prismatic TCFST and LCFST with FRP Here the FRP are provided in the L and T shaped nonprismatic columns. Geometry of specimen was L- shaped and T- shaped non-prismatic columns was considers for the analysis. The columns steel tube thickness was took as demonstrated in the figures shown below.
Keywords: Special-shaped column, CFST column, bearing capacity, Stability Stiffener.
1. INTRODUCTION 1.1 General Background The traditional rectangular column has column corners which protrude toward the inside of the rooms. The special shaped column denotes a structural column with L shaped, T shaped or cross shaped segments. Columns-limbs was as thick as wall. Special shaped column -structures have CFST gets advantage that has great bearing capacity and ductility of CFST structures. Compared to traditional CFST columns and special shaped column has smaller column limb dimension and has smooth connection with together infilled walls. Utilizes the indoor space more efficiently. Good architectural performance.
Fig -2: Model of CFST FRP and TCFST FRP The geometry of the specimen is such that L shaped and T shaped non-prismatic columns were considered for the analysis. The columns steel tube thickness is took as demonstrated in the figures shown below. The thickness of steel tube is equal to 3mm with yield strength 306 MPa and stiffeners having thickness 3mm with yield strength 306 MPa and specimen length is taken as 900 mm. Here the end plate connections are provided in the L and T shaped nonprismatic columns.
Fig -1: Model of circular CFST
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