Influence of Concrete Strength on the Behavior of Steel Tubular Columns Filled by Concrete

Influence of Concrete Strength on the Behavior of Steel Tubular Columns Filled by Concrete

journal article - other

Czech

This paper deals with the effectiveness of using circular steel columns filled by high strength concrete in case of structural members subjected to compression. The paper was worked out within the research programme focused on true behavior of steel tubular columns filled by concrete. Attention is focused on influence investigation of concrete strength on the behavior of columns. The paper includes the interpretation and evaluation of the results of experimental analysis, initial results of numerical model and sensitivity analysis. Circular steel tubes filled by normal concrete and circular steel tubes filled by high-strength concrete have been taken into account within the solution. The behavior of tubular columns filled by concrete is compared based on the results of experimental analysis. The behavior of columns without concrete is included into comparison. Numerical model has been developed in order to ensure consistency of the output of the numerical calculation and the data obtained at the test specimens. Finally sensitivity analysis is presented which gives some information about influence of input parameters on the buckling strength. At the conclusion parameters with the greatest influence on the buckling resistance are discussed whereas the efficiency of using high-strength concrete is observed.

This paper deals with the effectiveness of using circular steel columns filled by high strength concrete in case of structural members subjected to compression. The paper was worked out within the research programme focused on true behavior of steel tubular columns filled by concrete. Attention is focused on influence investigation of concrete strength on the behavior of columns. The paper includes the interpretation and evaluation of the results of experimental analysis, initial results of numerical model and sensitivity analysis. Circular steel tubes filled by normal concrete and circular steel tubes filled by high-strength concrete have been taken into account within the solution. The behavior of tubular columns filled by concrete is compared based on the results of experimental analysis. The behavior of columns without concrete is included into comparison. Numerical model has been developed in order to ensure consistency of the output of the numerical calculation and the data obtained at the test specimens. Finally sensitivity analysis is presented which gives some information about influence of input parameters on the buckling strength. At the conclusion parameters with the greatest influence on the buckling resistance are discussed whereas the efficiency of using high-strength concrete is observed.

steel tubes filled by concrete, buckling resistance, sensitivity analysis, composite columns

steel tubes filled by concrete, buckling resistance, sensitivity analysis, composite columns

BUKOVSKÁ, P.

2012

6. 8. 2012

North Atlantic University

U.S.A., elektronické vydání: http://www.naun.org/wseas/cms.action?id=2829

1998-4448

International Journal of Mechanics

6

3

United States of America

149

157

9