A master's thesis at the College of Engineering at the University of Basrah urged (analysis of successive collapse of buildings exposed to earthquake loads)

I dealt with the message presented by the student Hussein Abdul Latif Ahmed

A study of the finite element method to evaluate the response of multi-storey reinforced concrete buildings subject to column loss during an earthquake. Three-dimensional nonlinear dynamic analyzes were carried out by the twentieth edition of SAP-2000.

Various effects were investigated on the cascade failure behavior, particularly: the location of the removed column within the ground floor, the method of column removal, the timing of removal during the earthquake, the level of the removed column, the space between the connecting rods and the presence of shear walls.

The message aims to reduce the successive collapse of buildings exposed to earthquake loads

The thesis concluded that the collapse occurs when all or most of the joints at the bases of the ground floor columns reach the level of their collapse, that the timing of column removal and the chosen removal policy affect the structural behavior

The risk of building collapse increases when the timing of the removal coincides with the timing of the peak of ground acceleration. intense

The researcher recommended that when following the widespread method of removing the column before the shock, or the method of analyzing the equivalent force, it leads to dangerous results.