Analysis of reinforced concrete columns fitted inside steel casings

الملخص EN

Due to construction costs and operational issues have been in this study to discuss how to strengthen the concrete columns.

The results of previous studies on the construction of some structures earthquake-prone weakness reinforced concrete columns.

The inside steel casings surrounding the columns is a modern technique used in many countries today for columns of rectangular and circular concrete.

The advantages of this method is convenient, economical and easy.

Reference model in this study is a column concrete without casing steel and the others concrete columns were wrapped casings steel to study the amount of retrofitting, and which has been approved changing the thickness of the cover steel are the main variable in this research.

Were analyzed columns under the effect of axial force using the finite element method by using the program ANSYS (version 11).

The results showed that increase the susceptibility of the inside steel casings bearing concrete columns of force inflicted by the largest of the main form without the steel casing, as well as to increase the thickness of the cover leads to increased endurance.