Initial Imperfections of Steel and Steel-Concrete Circular Columns

článek v časopise - ostatní, Jost

angličtina

The paper is focused on the problems of the load-carrying capacity of steel and steel-concrete members subjected to compression. The attention is mainly paid to the buckling strength in the connection with the member imperfections, which are usually covered by the equivalent initial geometrical imperfection expressed as the maximal initial member curving in the mid-length of the buckled member subjected to compression. The paper is oriented to the analytical solution of the initial eccentricity based on the conception of the buckling strength and to the possibilities how to verify the initial imperfection experimentally. The problem analysis is shown on the examples of steel and steel-concrete composite columns represented by steel circular tubes and steel tubes filled by normal-strength and high-strength concrete. Using test results of the specimens subjected to compression the comparison of the actual values of the initial imperfections with the corresponding theoretical values is presented here.

Buckling strength, load-carrying capacity, initial imperfection, eccentricity, steel, concrete, circular column, theoretical analysis, experimental verification, test results, Southwell line.

KARMAZÍNOVÁ, M.; MELCHER, J.

2014

1. 8. 2014

World Scientific and Engineering Academy and Society

1991-8747

WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS

2014

9

Francouzská republika

27

34

8