Outsourcing of Concrete Filled Steel Tube Strengthened CFST Axial Compression Short Columns Finite Element Analysis

Abstract:

A new composite strengthening method that the CFST short column was strengthened with concrete filled steel tube was presented. Through the finite element analysis of five specimens with strengthening circular concrete filled steel tube columns and a specimen without strengthening circular concrete filled steel tube to explore the impact of the outer layer of concrete strength grade, external pipe wall thickness for the ultimate bearing capacity of concrete filled steel tube columns. The results show that with the increase of the outer pipe wall thickness, double concrete filled steel tube column yield strength and ultimate strength have increased. As the outer concrete strength grade increased as the specimen bearing capacity increased. When the concrete strength grade greater than C40, the improvement of concrete strength for specimen ultimate bearing capacity is not great.

• Periodical: Applied Mechanics and Materials (Volume 525)
• Pages: 568-572
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.525.568
• Online since: February 2014
• Authors: Yang Feng Wu*, Hong Mei Zhang
• Keywords: Finite Element Analysis (FEA), Outsourcing of Concrete-Filled Steel Tube, Strengthened CFST, Ultimate Bearing Capacity

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