Indian Journal of Science and Technology

Abstract

Objectives: Experimental study on Double tube Stub column is presented in this paper. Methods/Analysis: The behavior of the concrete infilled double tube stub columns was investigated. Three different strength of concrete namely 30 Mpa, 40 Mpa and 50 Mpa were used to fill the column specimens. To avoid buckling of the test specimen, diameter to thickness ratio was 33.3 and length to Diameter ratio was 3. This value was used for the entire test specimen. Findings: The failure modes of double tube column, load-deflection relation and load- strain relation were presented. Application: From the experimental study it is found that column strength increases due to the presence of additional inner mild steel tube for column having different outer tube materials namely Aluminium (Al), Stainless steel (SS) and Mild steel (MS). From the result it was observed that the presence of inner tube is more beneficial for columns with stainless steel and aluminium as outer tube if the strength of the concrete is less. 

Keywords: Circular Column, Composite Column, Double Skin, Stress-strain