You are to evaluate the feasibility of a cencrete infill in a hollow structural steel section subjected only to pure berding Specifically, you are tasked to determine if there will be an increase in the bending mament capacity from a hollow structural square steel section with the following dimensions shown to a concrele filled steel tube6 mm100 mmMaterial Properties:Yield stress af Steet fy, steel - 420MPaEtaul = 200G PaMaximum compressive strength of Concrete: fe = 27M PaEurede = 4700VT.(e und Eanerate in MPaUnder elastic stress analysis, the stress distribution within the concrete filed steel tube is as follows,NAo, - EE,Steel StressConcrete below the NAIs not considered foranalysisConcrete StressDistributionDistributionThis stress distribution is for the untransformed cross section. Moreover, since concrele carry little to na tensile stresses, the portion of the concrete below the neutral axis which resist tensile stresses will nat be considered in the anahlysisUsing elastic stress analysis:1. Evaluate the maximum momert that the hollow structural steel section can carry2 Evaluate the maximum oment that the congrete filled steel section can carry3. Compare if there is a significant difference between the bending moment capacity of the hollow structural steel and the concrete filled section. Under elastic stress analysis, will you recommend the use of a concrete infill?The stress analysis of the concrete filed steel section can be extended to inelastic analysis. For this part, we include the increase in concrete compressive strength to account for the lateral confinement provided by the steel tube. The folowing stress distribution within the concrete filled steel tube now applies,a, - 420 MPaNA, = 81.7 MPaConcrete below the NAIs not considered foranalysisConcrete StressDistributionDistributionUsing inelastic stress analysis,1. Determine the location of the neutral axis as measured from the extreme top fiber, h, by summing forces along the normal axis of the cross section. Note that you do not use the transformed section method for inelastic analysis.2. Determine the banding mornent about the neutral axis due to the given stress distribution. Compare your result to the elastic stress analysis.

Answered: Image /qna-images/answer/59a15eb5-0cc0-41ee-ba12-e66ce26d7f67.jpg

Using elastic stress analysis: 1. Evaluate the maimum momert that the hollow structural steel section can carry 2 Evaluate the maximum momant that the concaete filled steel section can carry 1 Compare if there is a signficant difference between the bending moment capacity of the hollow structural steel and the concrete filled section. Under elastic stress analysis, will you recommend the use of a concrete infil? The stress analysis of concrete filed steel section can be extended to inelasticanalysis. For this part we include the increase in concrete compressive strength to account for the lateral confinement providad by the stael tube. The following stress distribution within the concrete filled steel tube now applies,

Using elastic stress analysis: 1. Evaluate the maimum momert that the hollow structural steel section can carry 2 Evaluate the maximum momant that the concaete filled steel section can carry 1 Compare if there is a signficant difference between the bending moment capacity of the hollow structural steel and the concrete filled section. Under elastic stress analysis, will you recommend the use of a concrete infil? The stress analysis of concrete filed steel section can be extended to inelasticanalysis. For this part we include the increase in concrete compressive strength to account for the lateral confinement providad by the stael tube. The following stress distribution within the concrete filled steel tube now applies,

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter1: Introduction

Section: Chapter Questions

Problem 1.5.6P: The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular...

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