Seismic Performances and Typical Damages of Beam-Column Joints in the RC Buildings

Abstract eng:
The major reason for the damage in reinforced concrete buildings is non ductile designs. It has been observed that on reinforced concrete buildings, damage has arisen from utilization of concrete having not sufficient resistance, soft storey, weak reinforcement of column-beam joints, designs resulting in short columns. The columns are not tied with beams continually in one line. As a matter of fact, in a lot of cooperative buildings, as a result of fixing two consecutive beams to different tips of the column, the additional torsion in these columns has caused severe damage in the columns. In Turkey, last and heavily destructive earthquake is occurred in Bingol, on May 01, 2003. The earthquake had a moment magnitude of 6.4. In this earthquake, many buildings were heavily damaged and some have totally collapsed. In the highlight of such findings, essentials given by Turkish Earthquake Regulation (2007) with respect to design shall be discussed particularly for buildings constructed after the date such regulation is put into effect, and seismic features of the earthquake shall be commentated according to the data in connection with the strong ground motion obtained. The encouragement to use appropriate material and the use of ready mixed concrete will ensure that the damage will be minimized in probable future earthquakes. In addition to those, the extensive use of shear walls even in low-rise buildings may be an alternative approach to prevent earthquake damage. By means of illustrations and photographs demonstrating damages and collapses obtained during the investigation in connection with the structural system elements, assessments shall be made. Finally, suitable and effective reinforcement means shall be discussed with respect to reinforced concrete buildings damaged at a level of fortifiability.

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