ENERGY BASED EVALUATION OF REINFORCED CONCRETE STRUCTURE AFFORDABLE BY FAR FIELD EARTHQUAKE

In today's Standards, many methods

are used for the structural evaluation of reinforced concrete buildings, such

as non-linear analysis in the time integration, unimodal and multimodal static

pushover analysis, and summing of modes. In the literature, the evaluation of

energy-based structures is a subject that has not been studied much. In addition, the criteria for this method are not

specified in any Standard. The energy-based evaluation method is compared with

the capacity curve of the structure (base shear force-peak displacement curve)

by calculating the input energies to be generated by the earthquake in the

building. If the earthquake energy demands in the building remain below this

capacity curve, the damage levels are not foreseen for the building, but if it

stays above the capacity curves, it is based on the principle that damage to

the structure is likely to occur. The input energy of the earthquake

can be dissipated with the plastic deformations that the structures can make

without collapse, the kinetic energy depending on the mass of the structure in

the elastic region, and the energy dissipated by viscous damping. In this study, the energy capacity of a 4-storey

reinforced concrete structure, which does not have the risk of soil

amplification, at 39.9026 Latitude and 41.2498 Longitude coordinates, was

calculated by obtaining the base shear force - peak displacement curve using

the pushover analysis method. Then, the minimum and maximum earthquakes in 2020

and 2021 affecting the structure were given as input, and the demand energies

created by the earthquakes in the structure were calculated. By showing how much of these earthquake

energies the building can dissipate, damage ındex were determined and the

damage levels of the building were determined. In the calculation of the demand energies of the

earthquake, the analysis method in the time domain defined in the Turkish

Building Earthquake Code 2018 was applied. At the end of the study, the amount

of energy required to be stored in the structure is shown in order to

distribute the energy of an earthquake without damaging the structure.<o:p></o:p>